cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Motion-driven Visual Tempo Learning for Video-based Action Recognition
Creators: name: Liu, Yuanzhong
name: Yuan, Junsong
name: Tu, Zhigang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Action visual tempo characterizes the dynamics and the temporal scale of an action, which is helpful to distinguish human actions that share high similarities in visual dynamics and appearance. Previous methods capture the visual tempo either by sampling raw videos with multiple rates, which require a costly multi-layer network to handle each rate, or by hierarchically sampling backbone features, which rely heavily on high-level features that miss fine-grained temporal dynamics. In this work, we propose a Temporal Correlation Module (TCM), which can be easily embedded into the current action recognition backbones in a plug-in-and-play manner, to extract action visual tempo from low-level backbone features at single-layer remarkably. Specifically, our TCM contains two main components: a Multi-scale Temporal Dynamics Module (MTDM) and a Temporal Attention Module (TAM). MTDM applies a correlation operation to learn pixel-wise fine-grained temporal dynamics for both fast-tempo and slow-tempo. TAM adaptively emphasizes expressive features and suppresses inessential ones via analyzing the global information across various tempos. Extensive experiments conducted on several action recognition benchmarks, e.g. Something-Something V1 $\&$ V2, Kinetics-400, UCF-101, and HMDB-51, have demonstrated that the proposed TCM is effective to promote the performance of the existing video-based action recognition models for a large margin. The source code is publicly released at https://github.com/yzfly/TCM.
description: Accpted by IEEE Transactions on Image Processing(TIP), 2022
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.01.1952, erstellt von Edibe Tüzemen an der Universitätssternwarte Istanbul
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Bleistift, erstellt als Zeichnung nach eigener Vorlage am Istanbul Universitesi Observatuari, Beyazit (Istanbul). Instrument: Zeiss Refraktor Teleskop (Öffnung 130 mm, f = 2000 mm, projiziertes Sonnenbild D = 25 cm)
The correlation of WGC and Hydrodynamics bound with $R^4$ correction in the charged AdS$_{d+2}$ black brane
Creators: name: Mezerji, E. Naghd
name: Sadeghi, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: Black brane, Gravitational corrections, Weak gravity conjecture, KSS bound, Universal relaxation bound

description: In this paper, we focus on the possible correlation between conjectures KSS bound and weak gravity conjecture (WGC). The hydrodynamic values KSS bound and weak gravity conjecture constraint the low-energy effective field theory. These conjectures identify UV complete theories. We give four, six and eight order derivative corrections to corresponding action and employ the hyperscaling violating charged AdS$_{d+2}$ black brane solution. These corrections lead us to find correlation between conjectures KSS bound and weak gravity conjecture. We see that, with increasing perturbation correction, this correlation is more likely to appear. We consider dynamical constant $z=1$, $d=5$ and obtain the range of hyperscaling violation exponent $d+z-2\leqθ\leq d+z-1$ for the above mentioned black brane. Here, we show that higher derivative corrections reduce the ratio of $\frac{M}{Q}$ to extremal black holes. Likewise, we also obtain the universal relaxation bound $τ\geq \frac{1}{πT}$ and KSS bound $\fracη{s}\geq \frac{1}{4π}$ for our model. The results indicate that there is a possibility of a relationship between the two conjectures. Our studies also show the consistency of the WGC and the KSS bound conjectures for all corrections (except curvature-cubed, $β_2$) in the extremal and near-extremal condition.
description: 27 pages, 10 figures
Sonnenfleckenzeichnung Nr. 18084.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 07.04.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
All analytic solutions for geodesic motion in axially symmetric space-times
Creators: name: Ospino, J.
name: Hernandez-Pastora, J. L.
name: Nunez, L. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent observations of the orbits of star clusters around Sgr $A^\star$, imaging of black holes and gravitational waveforms of merging compact objects require a detailed understanding of the general relativistic geodesic motion. We came up with a method to provide all the possible geodesics in an axially symmetric space-time. The Kerr metric is explicitly worked out, recovering the Schwarzschild geodesics in the static limit. We also found the most general Killing tensor and its associated constant of motion for an axisymmetric space-time. The relevance of these results is crucial to understanding the different scenarios and the fundamental nature of the compact object at the galactic center.
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.02.1952, erstellt am Sonnenobservatorium Kanzelhöhe, Kärnten
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Bleistift, erstellt als Zeichnung nach eigener Vorlage im Sonnenobservatorium Kanzelhöhe in Sattendorf, Österreich. Instrument: Heliostat mit Refraktor Eigenbau (Öffnung 110mm, f = 1650mm, projiziertes Sonnenbild D = 25cm)
Omaloplia nigromarginata
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Omaloplia
Omaloplia nigromarginata

description: 62. O. nigromarginata (Herbst, 1785)
Lentz 1879 (Homaloplia ruricola); Bercio & Folwaczny 1979 (Homaloplia ruricola); Alekseev & Sakhnov 2000 (Homaloplia ruricola).
Voucher specimens: 7 [1 km E Cherniakhovsk, 28 June 1999, 3 exp.; ibidem, 21 May 2005; ibidem, 06 July 2010; 2 km E Ladushkin, 27 June 2010; Yantarny, 12 July 2015].
Kaliningrad Region: Chern. (Insterburg), Gur. (Arnau, Königsberg, Neuhausen), Zel. (Loppöhnen, Palmnicken, Rauschen, Warnicken); Bagr., Chern., Zel.
Comments: According to morphological characters and distributional maps of O. ruricola and O. nigromarginata in Rössner (1995), the specimens from the Kaliningrad Region belong to O. nigromarginata and all abovementioned reports from the northern Eastern Prussia and the Kaliningrad Region should concern the distributed in northern and eastern Europe O. nigromarginata only. The beetle occasionally and sporadically occurs in the Kaliningrad Region on the sun exposed meadows.
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 136, DOI: 10.5281/zenodo.10979877
Sonnenfleckenzeichnung Nr. 18045.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.02.1952, erstellt von Adolf Lemans
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Emergent O(4) symmetry at an one-dimensional deconfined quantum tricritical point
Creators: name: Xi, Ning
name: Yu, Rong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show an $\rm O(4)$ symmetry emerges at a deconfined quantum tricritical point of a valence bond solid and two ferromagnetic phases in an $S = 1/2$ frustrated spin chain by combining analytical analysis and numerical calculations with the time evolution of infinite matrix product states. With this symmetry, the valence-bond solid and the three magnetic order parameters form an $\rm O(4)$ pseudovector in the infrared limit, and can continuously rotate into each other. We numerically determine the location of the quantum tricritical point and study the scaling of the correlation functions of the $\rm O(4)$ vector components and associated conserved currents. The critical behaviors of these correlation functions are all in accord with field theoretical results. The emergent $\rm O(4)$ symmetry at the tricritical point is justified by the integer value of the scaling dimension of the emergent Noether conserved currents. Our findings not only give direct evidence of such a high emergent symmetry at an one-dimensional valence bond solid to magnetic transition but also shed light on exploring emergent symmetries in higher dimensions.
description: submitted to: Journal of Physics A: Mathematical and Theoretical
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.01.1952, erstellt am Sonnenobservatorium Kanzelhöhe, Kärnten
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Bleistift, erstellt als Zeichnung nach eigener Vorlage im Sonnenobservatorium Kanzelhöhe in Sattendorf, Österreich. Instrument: Heliostat mit Refraktor Eigenbau (Öffnung 110mm, f = 1650mm, projiziertes Sonnenbild D = 25cm)
Commencement, Salisbury University, Spring 1989
Creators: name: (:Unkn) Unknown
Publisher: name: Maryland Shared Open Access Repository
Year: 1989
Subjects: Salisbury (Md.)
Salisbury State University
Commencement ceremonies

description: Commencement ceremonies at have been held for graduates at Salisbury University since 1926, sometimes after each semester but typically in the spring. Programs always list the names of graduates and occasionally list hometown, degree, or major.
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.02.1952, erstellt von Edibe Tüzemen an der Universitätssternwarte Istanbul
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Bleistift, erstellt als Zeichnung nach eigener Vorlage am Istanbul Universitesi Observatuari, Beyazit (Istanbul). Instrument: Zeiss Refraktor Teleskop (Öffnung 130 mm, f = 2000 mm, projiziertes Sonnenbild D = 25 cm)
Sonnenfleckenzeichnung Nr. 18097.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.04.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Comparison of Soil-Applied and Postemergence Herbicides with Multiple Sites of Herbicidal Activity on Two Populations of Herbicide-Resistant Palmer Amaranth in Kentucky
Creators: name: Fleitz, Nicholas J.
Publisher: name: University of Kentucky Libraries
Year: 2018
Subjects: subject: Agronomy and Crop Sciences
subject: Weed Science

description: With the introduction of herbicide resistant Palmer amaranth into Kentucky during the past 10 years there has been an increasing concern for effective control measures in grain production. Field trials were performed in 2016 and 2017 near Barlow and Paris, KY to determine efficacy of chemical control programs targeting herbicide resistant Palmer amaranth. Percent visual control, effects on plant density and plant height were measured in 2016 to determine treatment effectiveness. Treatments containing four different sites of herbicide activity achieved an average of 98% control. Treatments containing only 3, 2 or 1 site of activity only achieved 64%, 45% and 33% control, respectively. Within the long-chain fatty acid inhibitors herbicides in this study, pre-emergent applied pyroxasulfone provided greater control than S-metolachlor or acetochlor. Pyroxasulfone also provided greater control than the photosystem II herbicides atrazine and metribuzin. In 2017 PRE treatments consisting of three-way mixtures of flumioxazin + pyroxasulfone + chlorimuron or S-metolachlor + metribuzin + fomesafen followed by a POST herbicide treatment provided > 90% suppression of Palmer amaranth 4 weeks after trial initiation. Post-emergence treatments containing glyphosate + dicamba or glyphosate + 2,4-D following a soil-applied pre-emergent treatment achieved the most effective season-long control of Palmer amaranth.
Sonnenfleckenzeichnung Nr. 18077.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 30.03.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Amphimallon solstitiale subsp. solstitiale
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Amphimallon
Amphimallon solstitiale
A. solstitiale solstitiale (linnaeus, 1758)

description: 63. A. solstitiale solstitiale (Linnaeus, 1758)
Lentz 1879; Bercio & Folwaczny 1979 (solstitialis); Alekseev & Sakhnov 2000 (solstitialis); Alekseev 2007; Alekseev & Shapoval 2011b; Alekseev 2014.
Voucher specimens: 4 [Cherniakhovsk, 10 June 1987; Dolzhanskoe, 29 June 1997; Kaliningrad, 15 July 2010; ibidem, 18 June 2018].
Kaliningrad Region: “Common everywhere”, Bagr. (Heiligenbeil), Gur. (Königsberg); Bagr., Chern., Gur., Gus., Gvard., Krasn., Nem., Nest., Oz., Pol., Pravd., Slav., Zel.
Comments: Widely distributed and frequent in the Kaliningrad Region species of human influenced landscapes: parks, suburbs and villages.
Ziani et al. 2015.
Kaliningrad Region: The species is known from Königsberg [Kaliningrad] according to Ziani et al. (2015) only. The actual presence of the species in the regional fauna needs verification: the range costriction in XX century or errorneous labeling of old material as “Königsberg” is possible. The species known in western Belarus from single locality (Alexandovitch & Pisanenko 1991) and in northern Poland according old data (Lentz 1879; Stebnicka 1978; Bercio & Folwaczny 1979). It is confirmed regionally extinct in Mecklenburg-Vorpommern at present (Rössner 2013).
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 136, DOI: 10.5281/zenodo.10979877
Sonnenfleckenzeichnung Nr. 18025.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.01.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Quantum cost of dense coding and teleportation
Creators: name: Qiu, Xinyu
name: Chen, Lin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum cost is a key ingredient to evaluate the quality of quantum protocols from a practical viewpoint. We show that the quantum cost of d-dimensional dense coding protocol is equal to d+3 when transmitting the classical message (0,0), and that is equal to d+4 when transmitting other classical message. It appears linear growth with the dimension and thus makes sense for implementation. In contrast, the quantum cost of high-dimensional teleportation protocols is equal to 13, which is the maximum value of the cost for the two-dimensional case. As an application, we establish the relation between the quantum cost and fidelity of dense coding protocols in terms of four typical noise scenario.
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.01.1952, erstellt von L. am Skalnate Pleso Observatorium
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage am Skalnate Pleso Observatorium. Später wurden ergänzende Angaben aufgrund weiterer Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Es sind zudem statistische Angaben für die Bestimmung der Fleckenrelativzahl notiert. Instrument: unbekannt, Sonnenbild D = 25 cm
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.04.1952, erstellt von Wolfgang Gleissberg an der Universitätssternwarte Istanbul
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Bleistift, erstellt als Zeichnung nach eigener Vorlage am Istanbul Universitesi Observatuari, Beyazit (Istanbul). Instrument: Zeiss Refraktor Teleskop (Öffnung 130 mm, f = 2000 mm, projiziertes Sonnenbild D = 25 cm)
Transient Joule- and (ac) Josephson-like photon emission in one- and two- nucleon tunneling processes between superfluid nuclei: blackbody and coherent spectral functions
Creators: name: Broglia, R. A.
name: Barranco, F.
name: Potel, G.
name: Vigezzi, E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Effective charged neutrons involved in one- and two- nucleon tunneling processes in heavy ion collisions between superfluid nuclei are expected to emit photons. Although the centroid, width and integrated energy area characterizing the associated gamma-strength functions are rather similar, the corresponding line shapes reflect the thermal equilibrated-like character of the quasiparticle transfer (1n-channel, blackbody spectral functional dependence), and the quantal coherent character of the Cooper pair transfer (2n-channel, Gaussian functional dependence) respectively. The predicted angular distributions, polarizations and analyzing power provide further insight into the profoundly different physics to be found at the basis of what can be considered a transient Joule-like and a (ac) Josephson-like nuclear processes
Sonnenfleckenzeichnung Nr. 18088.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.04.1952, erstellt von Adolf Lemans
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Melolontha hippocastani Fabricius 1801
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Melolontha
Melolontha hippocastani

description: 65. M. hippocastani Fabricius, 1801
Lentz 1879; Bercio & Folwaczny 1979; Alekseev & Sakhnov 2000; Alekseev & Shapoval 2014.
Voucher specimens: 1 [Dolzhanskoe, 28 June 1997].
Kaliningrad Region: “Common, especially in forests”; Krasn.
Comments: Formerly widespread in the region forest species, found in research period in north-eastern part of the Region only, where is locally distributed and occasional. The regional population decline in XX century is evident.
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 136, DOI: 10.5281/zenodo.10979877
Sonnenfleckenzeichnung Nr. 18074.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.03.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Influence of spherical anisotropy on optical mass sensing in a molecular-plasmonic optomechanical system
Creators: name: AleEbrahim, Elnaz
name: Harouni, Malek Bagheri
name: Amooghorban, Ehsan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We use an all-optical pump-probe method to develop a mass sensing mechanism in a molecular plasmonic system at room temperature. The system consists of a double-clamped graphene nanoribbon that parametrically interacts with two types of isotropic and anisotropic spherical plasmonic cavities in the presence of a strong pump field and a weak probe pulse. Based on the mode-selective quantization scheme and analogy with the canonical model of the cavity optomechanics, we formulate the Hamiltonian of the system in terms of the electromagnetic Greens tensor. In this manner, we derive an explicit form of size-dependent optomechanical coupling function and plasmonic damping rate, which include the modal, geometrical, and material features of the plasmonic structure. Engineering material features of the plasmonic nanostructure, we find that the intensity of the probe field transmission spectrum for radially anisotropic spherical nanocavity enhances significantly compared to the silver sphere nanocavity due to the mode volume reduction. This scheme can provide to achieve the minimum measurable mass at room temperature.
Entanglement spectrum and quantum phase diagram of the long-range XXZ chain
Creators: name: Schneider, J. T.
name: Thomson, S. J.
name: Sanchez-Palencia, L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement is a central feature of many-body quantum systems and plays a unique role in quantum phase transitions. In many cases, the entanglement spectrum, which represents the spectrum of the density matrix of a bipartite system, contains valuable information beyond the sole entanglement entropy. Here we investigate the entanglement spectrum of the long-range XXZ model. We show that within the critical phase it exhibits a remarkable self-similarity. The breakdown of self-similarity and the transition away from a Luttinger liquid is consistent with renormalization group theory. Combining the two, we are able to determine the quantum phase diagram of the model and locate the corresponding phase transitions. Our results are confirmed by numerically-exact calculations using tensor-network techniques. Moreover, we show that the self-similar rescaling extends to the geometrical entanglement as well as the Luttinger parameter in the critical phase. Our results pave the way to further studies of entanglement properties in long-range quantum models.
description: 13 pages, 9 Figures
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.01.1952, erstellt von Gaston Coutrez, Observatoire Royal de Belgique in Uccle
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage in Uccle.
Instrument: Merz-Grubb Refraktor Teleskop (Öffnung 160 mm, f = 2450 mm, projiziertes Sonnenbild D = 25 cm)
Melolontha melolontha
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Melolontha
Melolontha melolontha

description: 66. M. melolontha (Linnaeus, 1758)
Lentz 1879 (vulgaris Fabr.); Bercio & Folwaczny 1979; Alekseev & Sakhnov 2000; Alekseev & Shapoval 2011a, b, 2013, 2014, 2016; Alekseev 2014; Drotikova et al. 2015.
Voucher specimens: 2 [Cherniakhovsk, 08 May 1987; 23 km of the Curonian Spit, 20 May 2012].
Kaliningrad Region: Common everywhere, Zel. (Palmnicken); Bagr., Chern., Gur., Gus., Gvard., Nest., Oz., Pol., Pravd., Slav., Zel.
Comments: Widely distributed and locally very abundant species associated with forest edges, deciduous parks, shrubs and groves throughout the Region. There was observed a large number of individuals in aggregations along the Baltic seaside in several years (Bercio & Folwaczny 1979; Alekseev & Shapoval 2014).
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 136, DOI: 10.5281/zenodo.10979877
Polyphylla fullo subsp. fullo
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Polyphylla
Polyphylla fullo
P. fullo fullo (linnaeus, 1758)

description: 67. P. fullo fullo (Linnaeus, 1758)
Lentz 1879; Bercio & Folwaczny 1979; Alekseev & Sakhnov 2000; Alekseev 2003, 2010, 2014; Alekseev & Shapoval 2011a, b, 2013, 2016.
Voucher specimens: 5 [23 km of the Curonian Spit, 18 July 1996; ibidem, 12 July 2011; Rybachii, 12 August 2002; the Baltic Spit, 08 July 2007; 3 km W Povarovka, 07 July 2018].
Kaliningrad Region: Zel. (“im Strandgebiet”, Pillau, Cranz); Zel.
Comments: The thermophilous species is usually an inhabitant of coastal pine plantations, where larvae feed in soil at the roots of plants. In the Region occurs on the Curonian Spit (locally numerous in edges of pine forests in vicinity of white dunes complexes near the Curonian Gulf), in coastal sandy areas of the western Sambian seacoast and on the Baltic Spit. In general, the species can be considered “sporadically distributed and abundant” in the Region. The species is listed in the Red Data Book of the Kaliningrad Region (Dedkov & Grishanov 2010) as stenotopic beetle at the northern periphery of main distributional range. The real damage for sparce appropriate habitats is evident by increase of recreation too. Two colour forms of adults are encountered in the Region (with dark/ light brown cuticular pigmentation). The ratio of these forms by light trapping and the possible reasons of the sampled numbers are discussed in Alekseev & Shapoval (2012).
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 137, DOI: 10.5281/zenodo.10979877
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.04.1952, erstellt von L. Mrkosova-Pajdusakova am Skalnate Pleso Observatorium
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage am Skalnate Pleso Observatorium. Es sind zudem statistische Angaben für die Bestimmung der Fleckenrelativzahl notiert. Instrument: unbekannt, Sonnenbild D = 25 cm
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.04.1952, erstellt von L. Mrkosova-Pajdusakova am Skalnate Pleso Observatorium
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage am Skalnate Pleso Observatorium. Später wurden ergänzende Angaben aufgrund weiterer Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Es sind zudem statistische Angaben für die Bestimmung der Fleckenrelativzahl notiert. Instrument: unbekannt, Sonnenbild D = 25 cm
Theory introduction to baryon spectroscopy
Creators: name: Eichmann, Gernot
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In these introductory notes I give a brief overview on some theoretical aspects of light baryon spectroscopy. The first part contains a discussion of the symmetries of the baryon spectrum, the construction of flavor wave functions and some basic features of quark models. The second part examines the need for relativistic quantum field theory and focusses on spectrum calculations with functional methods.
description: 20 pages, 11 figures, 1 table. Contribution to the 2021 School on the Physics of Baryons, Oct 18-22 2021, Sevilla
Casimir effect in kinetic theory
Creators: name: Guo, Xingyu
name: Zhao, Jiaxing
name: Zhuang, Pengfei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study Casimir effect in equilibrium and non-equilibrium photon gas in the frame of quantum kinetic theory for $U(1)$ gauge field. We derive first the transport, constraint and gauge fixing equations for the photon number distribution from Maxwell's equations, and then calculate the energy variation and Casimir force for a finite system by considering boundary condition on the surface of the system. The Casimir force in vacuum is suppressed by the thermal motion of photons in equilibrium state, when considering two adiabatic plates. In non-equilibrium state, the photon induced Casimir force oscillates and decays with time and finally disappears.
description: 5 pages, 2 figures. Accepted by New Journal of Physics
Hoplia (Decamera) pulverulenta
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Hoplia
Hoplia pulverulenta

description: (68). H. (Decamera) pulverulenta (Fabricius, 1775) [= philanthus (Fuessly, 1775)]
Bercio & Folwaczny 1979.
Kaliningrad Region: Gur. (Königsberg).
Comments: The species is known in Sweden, Denmark (Silfverberg 2010), Lithuania (Tamutis et al. 2011), Poland (Bunalski 1995) and Belarus (Alexandovitch & Pisanenko 1991). Possible faunal element of the Kaliningrad Region, but the actual findings of the species are unknwn.
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 137, DOI: 10.5281/zenodo.10979877
Hoplia dilutipes Reitter 1890
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Hoplia
Hoplia dilutipes

description: (-) H. (s. str.) dilutipes Reitter, 1890
Alekseev & Sakhnov 2000 (missidentification); Alekseev 2003 (missidentification).
Comments: This is the southern species (f. exp. known in south-western Ukraine), impossible in the Region.
(-) H. (s. str.) hungarica Burmeister, 1844 Alekseev & Sakhnov 2000 (as H. subnuda Rtt., missidentification); Alekseev 2003 (missidentification).
Comments: This is the southern species, whose range extends to southern Poland in the north (Bunalski 1995).
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 137, DOI: 10.5281/zenodo.10979877
Sonnenfleckenzeichnung Nr. 18057.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.03.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Sonnenfleckenzeichnung Nr. 18044.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.02.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Sonnenfleckenzeichnung Nr. 18051.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.02.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Hoplia graminicola
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Hoplia
Hoplia graminicola

description: 69. H. (s. str.) graminicola (Fabricius, 1792)
Lentz 1879; Bercio & Folwaczny 1979; Alekseev & Sakhnov 2000.
Voucher specimens: 10 [Dolzhanskoe, 29 June 1997; Cherniakhovsk, 11 June 1999, 2 exp.; ibidem, 29 May 2018; Svetlogorsk, 10 June 2003, 3 exp.; 3 km S Novomoskovskoe, 04 June 2014, 2 exp.; Donskoe, 31 June 2016].
Kaliningrad Region: Chern. (Insterburg), Gur. (Königsberg, Quednau), Nest. (Rominten), Zel. (Bludau, Kurische Nehrung, Loppöhnen, Neuhäuser, Pillau, Rauschen); Bagr., Chern., Krasn., Nest., Zel.
Comments: Widely distributed, occasional species in the Kaliningrad Region, associated with xeric meadows and edges of pine forests species.
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 137, DOI: 10.5281/zenodo.10979877
Magnetising the ${\cal N}=4$ Super Yang-Mills plasma
Creators: name: Ballon-Bayona, Alfonso
name: Shock, Jonathan P.
name: Zoakos, Dimitrios
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the thermodynamics of the anisotropic magnetic $\rm AdS_5$ black brane solution found by D'Hoker and Kraus arXiv:0908.3875. This solution is the gravity dual of a strongly coupled ${\cal N}=4$ Super Yang-Mills plasma in ${\mathbb R}^{3,1}$, with temperature $T$, in the presence of a magnetic field ${\cal B}$. Following the procedure of holographic renormalisation we calculate the Gibbs free energy and the holographic stress tensor of the conformal plasma. We evaluate several thermodynamic quantities including the magnetisation, the anisotropic pressures and the speeds of sound. Our results are consistent with an RG flow from a perturbed $\rm AdS_5$ black brane at small ${\cal B}/T^2$ to a $\rm \bf BTZ \times {\mathbb R}^2$ black brane at large ${\cal B}/T^2$. We also perform a phenomenological analysis where we compare the thermodynamics of a magnetised conformal plasma against the lattice QCD results for the thermodynamics of the magnetised quark-gluon plasma.
description: V1 40 pages, 11 figures. V2 42 pages, 11 figures, references added. New subsection about the non-diffeomorphism invariant counterterm and the conformal anomaly. V3 44 pages, 12 figures, accepted in JHEP
“In the way to do some good”: The Charitable Donations of Mary Mee, Viscountess Palmerston
Creators: name: Stark, Isobel
Publisher: name: University of Southampton
Year: 2017
Subjects: History
Centre for Eighteenth Century Studies

description: This dissertation sets out to examine the possible motivations and uses to which Mary Mee, 2nd Viscountess Palmerston, put her charitable donations; in particular to examine if she used her charitable giving to increase her social and symbolic capital with her social peers and to exercise social control of those beneath her in the social order.
Sonnenfleckenzeichnung Nr. 18049.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.02.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Sonnenfleckenzeichnung Nr. 18080.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.04.1952, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Functional reduction of one-loop Feynman integrals with arbitrary masses
Creators: name: Tarasov, O. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A method of functional reduction for the dimensionally regularized one-loop Feynman integrals with massive propagators is described in detail. The method is based on a repeated application of the functional relations proposed by the author. Explicit formulae are given for reducing one-loop scalar integrals to a simpler ones, the arguments of which are the ratios of polynomials in the masses and kinematic invariants. We show that a general scalar $n$-point integral, depending on $n(n+1)/2$ generic masses and kinematic variables, can be expressed as a linear combination of integrals depending only on $n$ variables. The latter integrals are given explicitly in terms of hypergeometric functions of $(n-1)$ dimensionless variables. Analytic expressions for the 2-, 3- and 4-point integrals, that depend on the minimal number of variables, were also obtained by solving the dimensional recurrence relations. The resulting expressions for these integrals are given in terms of Gauss' hypergeometric function $_2F_1$, the Appell function $F_1$ and the hypergeometric Lauricella - Saran function $F_S$. A modification of the functional reduction procedure for some special values of kinematical variables is considered.
description: 52 pages, 1 figure
Hoplia parvula Krynicki 1832
Creators: name: Alekseev, Vitalii I.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Hoplia
Hoplia parvula

description: 70. H. (s. str.) parvula Krynicki, 1832
Lentz 1879 (pollinosa Er. minuta Illig.); Bercio & Folwaczny 1979; Alekseev 2005, 2014.
Voucher specimens: 5 [Zelenogradsk, 10 June 2010, 2 exp.; ibidem, 06 June 2002; 23 km of the Curonian Spit, 19 June 2007; 13 km of the Curonian Spit, 08 June 2011].
Kaliningrad Region: Zel. („am ganzen Strand am Wurzeln des Elymus,“ Neuhäuser, Pillau); Zel.
Comments: The psammophilous and thermophilous species sporadically and occasionally occurrs along the Baltic seacoast and coastal dunes of the Region, mostly at the Curonian Spit.
description: Published as part of Alekseev, Vitalii I., 2018, Scarabaeoidea (Insecta: Coleoptera) Of The Kaliningrad Region (Russia): The Commented Actual Checklist, Assessment Of Rarity And Notes To Regional Protection, pp. 111-152 in Acta Biologica Universitatis Daugavpiliensis 18 (2) on page 137, DOI: 10.5281/zenodo.10979877
Presentation: English Language Problem-based Learning Via User-generated 3D World Roblox Module: Need Analysis
Creators: name: Nor Hanim Mustafa
name: Hussein, Nur Hafezah
name: Suria Baba
Publisher: name: Zenodo
Year: 2020
Subjects: ROBLOX
e-learning
SLA
student learning
class technology

description: This material presented in ICU: DIHEc 2020 Surabaya Indonesia
Sonnenfleckenzeichnung, unnummeriert.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 23.03.1952, erstellt von Wolfgang Gleissberg an der Universitätssternwarte Istanbul
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Bleistiftzeichnung mit Tinte und Bleistift, erstellt als Zeichnung nach eigener Vorlage am Istanbul Universitesi Observatuari, Beyazit (Istanbul). Instrument: Zeiss Refraktor Teleskop (Öffnung 130 mm, f = 2000 mm, projiziertes Sonnenbild D = 25 cm)
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.04.1952, erstellt von Enrique Gullon an der Sternwarte Madrid
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1952

description: Zeichnung mit Tinte, erstellt auf einem eigenen Vordruck in Madrid. Instrument: Grubb Refraktor Teleskop (Öffnung: 20 cm, f = 3 m, projiziertes Sonnenbild D = 25 cm).
Instrumentennachweis gemäss Aparicio (u.a.): Sunspot, in: Solar Physics, Vol. 289, S. 4335-49, DOI: 10.1007/s11207-014-0567-x
Evaluation of intelligibility in elementary classrooms from the binaural impulse responses obtained with a childlike dummy head
Creators: name: GOMES DE MELO, VIVIANE SUZEY
Publisher: name: Zenodo
Year: 2012
Subjects: Elementary school classrooms
Intelligibility
Auralization

description: Thesis presentation reporting a new methodology for evaluating speech intelligibility in elementary school classrooms. Intelligibility is assessed from binaural impulse responses measured in rooms. A swept sinusoidal signal is adopted and an artificial speaker is used as the sound source. Measurements are taken with a child's mannequin head. A signal processing procedure for generating auralizations from measurements is described. These auralizations are applied to children through equalized headphones to perform virtual articulation tests. Real articulation tests are also carried out with students in the classroom to validate the technique. The main results of the in-person and virtual articulation tests are presented and discussed. A fake adult head is used to record signals in a room for comparative purposes. It is demonstrated that auralizations generated with the adult mannequin head are not suitable for producing reliable auralizations for children. On the other hand, the auralizations obtained with the children's mannequin managed to produce very good results for the children, presenting an average difference of 3% between real and virtual articulation indices. The technique can be applied without the presence of students in the classroom.
The CARMENES search for exoplanets around M dwarfs: Benchmarking the impact of activity in high-precision radial velocity measurements
Creators: name: Jeffers, S. V.
name: Barnes, J. R.
name: Scheofer, P.
name: Quirrenbach, A.
name: Zechmeister, M.
name: Amado, P. J.
name: Caballero, J. A.
name: Fernandez, M.
name: Rodriguez, E.
name: Ribas, I.
name: Reiners, A.
name: Guillen, C. Cardona
name: Cifuentes, C.
name: Czesla, S.
name: Hatzes, A. P.
name: Kurster, M.
name: Montes, D.
name: Morales, J. C.
name: Pedraz, S.
name: Sadegi, S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Current exoplanet surveys using the radial velocity (RV) technique are targeting M dwarfs because any habitable zone terrestrial-mass planets will induce a high RV and orbit on shorter periods than for more massive stars. One of the main caveats is that M dwarfs show a wide range of activity levels from inactive to very active, which can induce an asymmetry in the line profiles and, consequently, a spurious RV measurement. We aim to benchmark the impact of stellar activity on high-precision RV measurements using regular-cadence CARMENES visible and near-infrared observations of the active M3.5 dwarf EV Lac. We used the newly developed technique of low-resolution Doppler imaging to determine the centre-of-light, or spot-induced RV component, for eight observational epochs. We confirm a statistically significant and strong correlation between the independently measured centre-of-light and the chromatic index, which is a measure of the amplitude variation with wavelength of the RVs. We also find circular closed-loop relations of several activity indices with RV for a subset of data that covers only several rotation periods. We also investigate the implications of large phase gaps in the periodograms of activity indicators. Finally, by removing the spot-induced RV component we improve the planet-mass sensitivity by a factor of at least three. We conclude that for active M stars, a regular-cadence observing strategy is the most efficient way to identify and eliminate sources of correlated noise.
description: accepted by A&A