cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars VI. Insights from Radiative Transfer Modeling
Creators: name: Sheehan, Patrick D.
name: Tobin, John J.
name: Looney, Leslie L.
name: Megeath, S. Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Markov Chain Monte Carlo radiative transfer modeling of a joint ALMA 345 GHz and spectral energy distribution dataset for a sample of 97 protostellar disks from the VLA and ALMA Nascent Disk and Multiplicity Survey of Orion Protostars. From this modeling, we derive disk and envelope properties for each protostar, allowing us to examine the bulk properties of a population of young protostars. We find that disks are small, with a median dust radius of $ 29.4^{+ 4.1}_{- 2.7}$ au and a median dust mass of $ 5.8^{+ 4.6}_{- 2.7}$ M$_{\oplus}$. We find no statistically significant difference between most properties of Class 0, I, and Flat Spectrum sources with the exception of envelope dust mass and inclination. The distinction between inclination is an indication that the Class 0/I/Flat Spectrum system may be difficult to tie uniquely to the evolutionary state of protostars. When comparing with Class II disk dust masses in Taurus from similar radiative transfer modeling, we further find that the trend of disk dust mass decreasing from Class 0 to Class II disks is no longer present, though it remains unclear whether such a comparison is fair due to differences in star forming region and modeling techniques. Moreover, the disks we model are broadly gravitationally stable. Finally, we compare disk masses and radii with simulations of disk formation and find that magnetohydrodynamical effects may be important for reproducing the observed properties of disks.
description: 31 pages, 15 figures, 2 tables, accepted for publication in ApJ
HWGL-Neuerscheinungen 2019
Creators: name: Heiles, Marco
Publisher: name: RWTH Aachen University
Year: 2019
Subjects: http://dx.doi.org/10.17613/dcc8-bq30

description: Netzwerk Historische Wissens- und Gebrauchsliteratur (2019).
description: Published by Netzwerk Historische Wissens- und Gebrauchsliteratur
Anti-melanoma and UV-B protective effect of microbial pigment produced by marine Pseudomonas aeruginosa GS-33
Creators: name: Patil, Sandeep
name: Jayasinh Paradeshi
name: Bhushan Chaudhari
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Bioactivity of a microbial pigment, extracted from fermented broth of culture marine Pseudomonas aeruginosa was screened for anticancer activity against human skin melanoma cell line SK-MEL-2. Upon characterisation, the pigment was confirmed as Phenazine-1-carboxylic acid (PCA). The PCA was found effective against SK-MEL-2 cell line at low concentration (GI50 value <10 μg/mL). Reduced cell density and cell shrinkage with typical morphological changes such as rounding of cells with loss/breaking of cell membrane were seen in SK-MEL-2 cells treated with PCA and Adriamycin. The pigment exhibited UV-B protecting activity as calculated by in vitro spectrophotometric assay and potentiated sun protection factor of commercial sunscreen lotion. Moreover, the pigment was non-toxic up to concentration of 100 ppm as assessed erythrocyte haemolysis assay. These results suggest that microbial pigment PCA could be effective and promising in the treatment as well as prevention of melanoma skin cancers.
Magnetic Braking of Accreting T Tauri Stars II: Torque Formulation Spanning Spin-Up and Spin-Down Regimes
Creators: name: Ireland, Lewis G.
name: Matt, Sean P.
name: Zanni, Claudio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The magnetic interaction between a classical T Tauri star and its surrounding accretion disk is thought to influence its rotational evolution. We use 2.5D magnetohydrodynamic, axisymmetric simulations of star-disk interaction, computed via the PLUTO code, to calculate the net torque acting on these stars. We divide the net torque into three contributions: accretion (spin-up), stellar winds (spin-down), and magnetospheric ejections (MEs) (spin-up or down). In Paper I, we explored interaction regimes in which the stellar magnetosphere truncates the inner disk at a location spinning faster than the star, resulting in a strong net spin-up contribution from accretion and MEs ("steady accretion" regime). In this paper, we investigate interaction regimes in which the truncation radius gets closer to and even exceeds corotation, where it is possible for the disk material to gain angular momentum and be periodically ejected by the centrifugal barrier ("propeller" regime). This reduces the accretion torque, can change the sign of the ME torque, and can result in a net stellar spin-down configuration. These results suggest it is possible to have a net spin-down stellar torque even for truncation radii within the corotation radius ($R_\text{t} \gtrsim 0.7 R_\text{co}$). We fit semi-analytic functions for the truncation radius, and the torque associated with star-disk interaction (i.e., the sum of accretion and ME torques) and stellar wind, allowing for the prediction of the net stellar torque for a parameter regime covering both net spin-up and spin-down configurations, as well as the possibility of investigating rotational evolution via 1D stellar evolution codes.
description: 18 pages, 9 figures
Diffusive shock acceleration at oblique high Mach number shocks
Creators: name: van Marle, Allard Jan
name: Bohdan, Artem
name: Morris, Paul J.
name: Pohl, Martin
name: Marcowith, Alexandre
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences
subject: J.2
subject: 85-08

description: The current paradigm of cosmic ray (CR) origin states that the most part of galactic CRs is produced by supernova remnants. The interaction of supernova ejecta with the interstellar medium after supernova's explosions results in shocks responsible for CR acceleration via diffusive shock acceleration (DSA). We use particle-in-cell (PIC) simulations and a combined PIC-magnetohydrodynamic (PIC-MHD) technique to investigate whether DSA can occur in oblique high Mach number shocks. Using the PIC method, we follow the formation of the shock and determine the fraction of the particles that gets involved in DSA. Then, with this result, we use PIC-MHD simulations to model the large-scale structure of the plasma and the magnetic field surrounding the shock and find out whether or not the reflected particles can generate the upstream turbulence and trigger DSA. We find that the feasibility of this process in oblique shocks depends strongly on the Alfvenic Mach number, and the DSA process is more likely triggered at high Mach number shocks.
description: Accepted for publication in ApJ
A comparative physicochemical study of unsymmetrical indium phthalocyanines in the presence of magnetic nanoparticles or quantum dots
Creators: name: Olawale L. Osifeko
name: Tebello Nyokong
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Asymmetric indium phthalocyanine (3, containing an NH2 group) was conjugated (via an amide bond) to magnetic nanoparticle (MNP) functionalized with carboxylic acid or glutathione-capped CdTe/ZnSe/ZnO quantum dots to form 3-MNPs or 3-QDs. Techniques such as time-resolved fluorescence measurements, transmission electron microscopy, XPS, elemental analysis, FTIR, NMR (1H, 13C, and cozy), electronic spectroscopy, as well as mass spectroscopy were employed to characterize 3 and its nanoconjugates. The phthalocyanine conjugated to quantum dot (3-QDs) possesses the lowest Фpd higher Ф∆ and ФT as well as longer triplet lifetimes compares to 3-MNPs and free phthalocyanine.
Architectures of Compact Super-Earth Systems Shaped by Instabilities
Creators: name: Goldberg, Max
name: Batygin, Konstantin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Compact non-resonant systems of sub-Jovian planets are the most common outcome of the planet formation process. Despite exhibiting broad overall diversity, these planets also display dramatic signatures of intra-system uniformity in their masses, radii, and orbital spacings. Although the details of their formation and early evolution are poorly known, sub-Jovian planets are expected to emerge from their natal nebulae as multi-resonant chains, owing to planet-disk interactions. Within the context of this scenario, the architectures of observed exoplanet systems can be broadly replicated if resonances are disrupted through post-nebular dynamical instabilities. Here, we generate an ad-hoc sample of resonant chains and use a suite of N-body simulations to show that instabilities can not only reproduce the observed period ratio distribution, but that the resulting collisions also modify the mass uniformity in a way that is consistent with the data. Furthermore, we demonstrate that primordial mass uniformity, motivated by the sample of resonant chains coupled with dynamical sculpting, naturally generates uniformity in orbital period spacing similar to what is observed. Finally, we find that almost all collisions lead to perfect mergers, but some form of post-instability damping is likely needed to fully account for the present-day dynamically cold architectures of sub-Jovian exoplanets.
description: 14 pages, 8 figures, accepted for publication in AJ
Photon Ring Symmetries in Simulated Linear Polarization Images of Messier 87*
Creators: name: Palumbo, Daniel C. M.
name: Wong, George N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Event Horizon Telescope (EHT) recently released the first linearly polarized images of the accretion flow around the supermassive black hole Messier 87*, hereafter \m{}. The spiraling polarization pattern found in EHT images favored magnetically arrested disks (MADs) as the explanation for the EHT image. With next-generation improvements to very long baseline interferometry (VLBI) on the horizon, understanding similar polarized features in the highly lensed structure known as the "photon ring," where photons make multiple half-orbits about the black hole before reaching the observer, will be critical to analysis of future images. Recent work has indicated that this image region may be depolarized relative to more direct emission. We expand this observation by decomposing photon half-orbits in the EHT library of simulated images of the \m{} accretion system and find that images of MAD simulations show a relative depolarization of the photon ring attributable to destructive interference of oppositely spiraling electric field vectors; this antisymmetry, which arises purely from strong gravitational lensing, can produce up to ${\sim}50\%$ depolarization in the photon ring region with respect to the direct image. In systems that are not magnetically arrested and with the exception of systems with high spin and ions and electrons of equal temperature, we find that highly lensed indirect sub-images are almost completely depolarized, causing a modest depolarization of the photon ring region in the complete image. We predict that next-generation EHT observations of \m{} polarization should jointly constrain the black hole spin and the underlying emission and magnetic field geometry.
description: Accepted to ApJ. 11 pages, 4 figures
Interplay of Inhibition and Multiplexing:Largest Eigenvalue Statistics
Creators: name: GHOSH, SAPTARSHI
name: Jalan, Sarika
name: Dwivedi, Sanjiv K.
Publisher: name: figshare
Year: 2016
Subjects: subject: 29902 Complex Physical Systems
subject: FOS: Physical sciences

description: Phase diagram depicting shape parameter ξ for accepted GEV distribution for ER-ER multiplex network as a function of IC inclusion probabilities (p in ) in both the layers. Region B
corresponds to the Weibull. Region A stands for undefined distributions.
Expanding Minds and Narrowing Divides in India through Gamivism
Creators: name: Myers, Misha
Publisher: name: Monash University
Year: 2016
Subjects: Digital Humanities

description:
 This paper was presented at the Videogame Cultures 6, Inter-disciplinary.net, Oxford University, 17-19 July 2014.The board game Bumper Crop was designed and its social impact tested as part of
the Play to Grow project to explore what game design properties and mechanisms
are most effective in promoting change-related agendas. Bumper Crop was
designed for both physical and digital platforms, to engage young urban adults in
complexities of rural development, agricultural practices and issues facing farmers
in India. The project involved a partnership with Digital Green, a non-profit and
charitable organisation helping small and marginal farmers in both India and lowincome
African countries to share best practices with their communities through
creating and sharing videos. Combining real life content with serious play, Bumper
Crop was designed through a participatory and human-centred design approach
with field visits, dialogues and play tests with farmers working with Digital Green
in the region of Madhya Pradesh, and with young urban adults in Mumbai.
Contrary to expectations, initial evaluation results revealed that the game’s original
purpose of generating empathy for farmers was not realised amongst the available
pool of samples. Surprisingly, however, it did serve as an effective tool for peer-to-peer
learning between farmers themselves, bringing the game back to Digital
Green’s core business of creating platforms for sharing of expert knowledge.
Suppression of the TeV pair-beam plasma instability by a tangled weak intergalactic magnetic field
Creators: name: Alawashra, Mahmoud
name: Pohl, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study the effect of a tangled sub-fG level intergalactic magnetic field (IGMF) on the electrostatic instability of a blazar-induced pair beam. Sufficiently strong IGMF may significantly deflect the TeV pair beams, which would reduce the flux of secondary cascade emission below the observational limits. A similar flux reduction may result from the electrostatic beam-plasma instability, which operates the best in the absence of IGMF. Considering IGMF with correlation lengths smaller than a kpc, we find that weak magnetic fields increase the transverse momentum of the pair beam particles, which dramatically reduces the linear growth rate of the electrostatic instability and hence the energy-loss rate of the pair beam. We show that the beam-plasma instability is eliminated as an effective energy-loss agent at a field strength three orders of magnitude below that needed to suppress the secondary cascade emission by magnetic deflection. For intermediate-strength IGMF, we do not know a viable process to explain the observed absence of GeV-scale cascade emission.
description: 11 pages, 5 figures
Sustaining Stories: Story in games for social impact
Creators: name: Myers, Misha
name: Sabnani, Nina
name: Anirudha Joshi
name: Saswat Mahapatra
Publisher: name: Monash University
Year: 2016
Subjects: Digital Humanities

description: This paper was presented at Storystorm Workshop at the ACM Design of Interaction Systems Conference 2014, Vancouver, 21-25 June.

Storying in games can effectively promote pro-social
purposes by bringing complex systems, social issues,
cultural knowledge and practices to life. This paper
considers a case study of the game ‘Bumper Crop’
developed in a specific socio-cultural context with small
farmers in India aimed at communicating the real life
issues and challenges they face, along with those of
rural development and maintenance of sustainable
agricultural practices. In particular, it discusses the
way that stories operate within the game and in social
impact games in general and how they are an effective
mediated environment for knowledge integration and
identification.
Lunar Orbit Measurement of Cosmic Dawn 21 cm Global Spectrum
Creators: name: Shi, Yuan
name: Deng, Furen
name: Xu, Yidong
name: Wu, Fengquan
name: Yan, Qisen
name: Chen, Xuelei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A redshifted 21 cm line absorption signature is commonly expected from the cosmic dawn era, when the first stars and galaxies formed. The detailed traits of this signal can provide important insight on the cosmic history. However, high precision measurement of this signal is hampered by the ionosphere refraction and absorption, as well as radio frequency interference (RFI). A space observation can solve the problem of the ionosphere, and the Moon can shield the RFI from the Earth. In this paper, we present simulations of the global spectrum measurement in the 30 -- 120 MHz frequency band on the lunar orbit, from the proposed Discovering the Sky at the Longest wavelength (DSL) project. In particular, we consider how the measured signal varies as the satellite moves along the orbit, take into account the blockage of different parts of the sky by the Moon and the antenna response. We estimate the sensitivity for such a 21 cm global spectrum experiment. An RMS noise level of $\le 0.05$ K is expected at 75 MHz after 10 orbits ($\sim$ 1 day) observation, for a frequency channel width of 0.4 MHz. We also study the influence of a frequency-dependent beam, which may generate complex spectral structures in the spectrum. Estimates of the uncertainties in the foreground and 21 cm model parameters are obtained.
description: 14 pages, 16 figures, accepted for publication in ApJ
“Thomas Brussig”, in: Killy Literaturlexikon. Autoren und Werke des deutschsprachigen Kulturraums. 2. Aufl., hg. Wilhelm Kühlmann et al. Berlin/New York: Walter de Gruyter, 2008. Vol 2, pp. 240-242.
Creators: name: Franz-Josef Deiters
Publisher: name: Monash University
Year: 2016
Subjects: subject: 200512 Literature in German
subject: FOS: Languages and literature

description: Thomas Brussig
“‘Staub, der einen Besuch abstattet’ – Zur Selbsterinnerung der Schrift in Ralf Rothmanns Milch und Kohle”, in: Erinnerungskrisen / Memory Crises, hg. Franz-Josef Deiters et al Freiburg i. Br./Berlin/Wien: Rombach, 2008, S. 67-84.
Creators: name: Franz-Josef Deiters
Publisher: name: Monash University
Year: 2016
Subjects: subject: 200512 Literature in German
subject: FOS: Languages and literature

description: Modern memory theories conceptualize literature as a medium of cultural memory. Yet, the following article challenges this conceptualization, arguing that ascribing a memory function to literature undermines the de-pragmatization of literature in modernity. Through a poetological reading of Ralf Rothmann’s novel Milch und Kohle (2000) the article then investigates in which way a memory function could be ascribed to modern literature without undermining the latter’s status as a de-pragmatized system.
Bumper Crop
Creators: name: Myers, Misha
name: Griffiths, Dave
name: Sabnani, Nina
name: Anirudha Joshi
name: Saswat Mahapatra
Publisher: name: Monash University
Year: 2016
Subjects: Digital Humanities

description: Bumper Crop is a social impact game created in both digital and physical platforms based on the experiences and challenges of being a small holding farmer in India. This digital beta version is published and available for free download on Google Playstore. The game was created by a team of UK/India academic researchers and practitioners led by Dr. Misha Myers of Falmouth University and the digital game prototype was developed with Dave Griffiths of FoAM Kernow. The team worked in partnership to develop the game with the New Delhi-based non-profit organisation Digital Green as part of the Arts Humanities Research Council research project 'Play to Grow: Augmenting Agriculture with Social Impact Games'. This project explored and tested the use of computer games as a method of storytelling and learning to engage urban users in complexities of rural development, agricultural practices and issues facing farmers in India. The game was developed through a participatory co-design methodology involving small-holding farmers and village mediators in Madhya Pradesh. The development of the game was undertaken through partnership between Falmouth University and Digital Green and according to each organisation's policies and procedures, which cover research ethics, confidentiality and public safety. Informed consent was secured from participants and their confidentiality/ anonymity has been protected.
Optimal protocol for spin-orbit torque switching of a perpendicular nanomagnet
Creators: name: Vlasov, Sergei M.
name: Kwiatkowski, Grzegorz J.
name: Lobanov, Igor S.
name: Uzdin, Valery M.
name: Bessarab, Pavel F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is demonstrated by means of the optimal control theory that the energy cost of the spin-orbit torque induced reversal of a nanomagnet with perpendicular anisotropy can be strongly reduced by proper shaping of both in-plane components of the current pulse. The time-dependence of the optimal switching pulse that minimizes the energy cost associated with Joule heating is derived analytically in terms of the required reversal time and material properties. The optimal reversal time providing a tradeoff between the switching speed and energy efficiency is obtained. A sweet-spot balance between the field-like and damping-like components of the spin-orbit torque is discovered; it permits for a particularly efficient switching by a down-chirped rotating current pulse whose duration does not need to be adjusted precisely.
description: 6 pages, 3 figures
HST WFC3/Grism Observations of the Candidate Ultra-High-Redshift Radio Galaxy GLEAM J0917-0012
Creators: name: Seymour, N.
name: Drouart, G.
name: Noirot, G.
name: Broderick, J. W.
name: Turner, R. J.
name: Shabala, S. S.
name: Stern, D. K.
name: Bellstedt, S.
name: Driver, S.
name: Davies, L.
name: De Breuck, C. A.
name: Afonso, J.
name: Vernet, J. D. R.
name: Galvin, T. J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present Hubble Space Telescope Wide Field Camera 3 photometric and grism observations of the candidate ultra-high-redshift (z>7) radio galaxy, GLEAM J0917-0012. This radio source was selected due to the curvature in its 70-230 MHz, low-frequency Murchison Widefield Array radio spectrum and its faintness in K-band. Follow-up spectroscopic observations of this source with the VLA and ALMA were inconclusive as to its redshift. Our F105W and F0986M imaging observations detect the host of GLEAM J0917-0012 and a companion galaxy, ~one arcsec away. The G102 grism observations reveal a single weak line in each of the spectra of the host and the companion. To help identify these lines we utilised several photometric redshift techniques including template fitting to the grism spectra, fitting the UV-to-radio photometry with galaxy templates plus a synchrotron model, fitting of the UV-to-near-infrared photometry with EAZY, and fitting the radio data alone with RAiSERed. For the host of GLEAM J0917-0012 we find a line at 1.12 micron and the UV-to-radio spectral energy distribution fitting favours solutions at z~2 or z~8. While this fitting shows a weak preference for the lower redshift solution, the models from the higher redshift solution are more consistent with the strength of the spectral line. The redshift constraint by RAiSERed of z>6.5 also supports the interpretation that this line could be Lyman-alpha at z=8.21; however EAZY favours the z~2 solution. We discuss the implications of both solutions. For the companion galaxy we find a line at 0.98 micron and the spectral energy distribution fitting favours solutions at z<3 implying that the line could be the [OII]3727 doublet at z=1.63 (although the EAZY solution is z~2.6+/-0.5). Further observations are still required to unambiguously determine the redshift of this intriguing candidate ultra-high-redshift radio galaxy (abridged).
description: 18 pages, 7 figures, 6 tables, accepted for publication in PASA
The Candidate Progenitor Companion Star of the Type Ib/c SN 2013ge
Creators: name: Fox, Ori D.
name: Van Dyk, Schuyler D.
name: Williams, Benjamin F.
name: Drout, Maria
name: Zapartas, Emmanouil
name: Smith, Nathan
name: Milisavljevic, Dan
name: Andrews, Jennifer E.
name: Bostroem, K. Azalee
name: Filippenko, Alexei V.
name: Gomez, Sebastian
name: Kelly, Patrick L.
name: de Mink, S. E.
name: Pierel, Justin
name: Rest, Armin
name: Ryder, Stuart
name: Sravan, Niharika
name: Strolger, Lou
name: Wang, Qinan
name: Weil, Kathryn E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This Letter presents the detection of a source at the position of the Type Ib/c supernova (SN) 2013ge more than four years after the radioactive component is expected to have faded. This source could mark the first post-SN direct detection of a surviving companion to a stripped-envelope Type Ib/c explosion. We test this hypothesis and find the shape of the source's spectral energy distribution is most consistent with that of a B5 I supergiant. While binary models tend to predict OB-type stars for stripped-envelope companions, the location of the source on a color-magnitude diagram (CMD) places it redward of its more likely position on the main sequence (MS). The source may be temporarily out of thermal equilibrium, or a cool and inflated non-MS companion, which is similar to the suggested companion of Type Ib SN 2019yvr that was constrained from pre-SN imaging. We also consider other possible physical scenarios for the source, including a fading SN, circumstellar shock interaction, line of site coincidence, and an unresolved host star cluster, all of which will require future observations to more definitively rule out. Ultimately, the fraction of surviving companions ("binary fraction") will provide necessary constraints on binary evolution models and the underlying physics.
description: Accepted to ApJL. 9 pages, 4 figures, 1 table
“Volk”, in: Historisches Wörterbuch der Rhetorik, ed. by Gert Ueding. Vol. 9, Tübingen: Niemeyer Verlag, 2009, pp. 1664-1671.
Creators: name: Franz-Josef Deiters
Publisher: name: Monash University
Year: 2016
Subjects: subject: 200512 Literature in German
subject: FOS: Languages and literature

description: Volk
Detection of Gravitational Redshift in Open Cluster non-degenerate stars
Creators: name: Gutiérrez, Carlos M.
name: Ramos-Chernenko, Nataliya
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A key observational prediction of Einstein's Equivalence Principle is that light undergoes redshift when it escapes from a gravitational field. Although astrophysics provides a wide variety of physical conditions in which this redshift should be significant, till very recently the observational evidence for this gravitational effect was limited to the light emitted by the Sun and white dwarfs. \textit{Gaia}-DR2 astrometric and kinematic data, in combination with other spectroscopic observations, provides a test bench to validate such predictions in statistical terms. The aim of this paper is to analyze several thousand main-sequence and giant stars in open clusters (OCs) to measure the gravitational redshift effect. Observationally, a spectral shift will depend on the stellar mass-to-radius ratio as expected from the theoretical estimation of relativity. After the analysis, the obtained correlation coefficient between theoretical predictions and observations for 28 (51) OCs is $a= 0.977 \pm 0.218$ ($0.899 \pm 0.137$). The result has proven to be statistically robust and with little dependence on the details of the methodology or sample selection criteria. This study represents one of the more extensive validations of a fundamental prediction of gravity theories.
description: Accepted for publication in ApJ
Essential oil constituents, phenolic content and antioxidant activity of Lavandula stricta Delile growing wild in southern Iran
Creators: name: Ardalan Alizadeh
name: Aghaee, Zahra
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Inorganic Chemistry
subject: Plant Biology

description: Lavandula stricta belongs to the Lamiaceae family and is considered as an endemic medicinal plant in southern Iran. Essential oil composition, total phenolic content and antioxidant activity from two different populations of L. stricta were studied for the first time. A GC and GC/MS analysis of essential oil isolated from the aerial part of L. stricta identified 31 constituents; the major constituents were α-pinene (58.34–63.52%), linalool (8.85–9.36%), 3-methyl butyl 2-methyl butanoate (7.45–7.70%), sabinene (2.84–3.56%), limonene (2.87–3.21%) and myrcene (2.25%). The total phenolic content of methanolic extracts was determined with the Folin–Ciocalteu reagent and the antioxidant activity of methanolic extract and essential oil were determined with the 2, 2-diphenyl-1-picryl hydrazyl free radical scavenging assay, respectively. Total phenols varied from 61.05 to 64.45 mg GAE/g dry weight, and IC50 values in the radical scavenging assay ranged from 334.11 to 395.23 μg/mL in methanolic extracts and 420–475 μg/mL in essential oil.
Four-dimensional factorization of the fermion determinant in lattice QCD
Creators: name: Giusti, Leonardo
name: Saccardi, Matteo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: In the last few years it has been proposed a one-dimensional factorization of the fermion determinant in lattice QCD with Wilson-type fermions that leads to a block-local action of the auxiliary bosonic fields. Here we propose a four-dimensional generalization of this factorization. Possible applications are more efficient parallelizations of Monte Carlo algorithms and codes, master field simulations, and multi-level integration.
description: 17 pages, 3 figures
UV and X-ray pulse amplitude variability in the transitional millisecond pulsar PSR J1023+0038
Creators: name: Zanon, A. Miraval
name: Ambrosino, F.
name: Zelati, F. Coti
name: Campana, S.
name: Papitto, A.
name: Illiano, G.
name: Israel, G. L.
name: Stella, L.
name: D'Avanzo, P.
name: Baglio, M. C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The transitional millisecond pulsar PSR\,J1023+0038 is the first millisecond pulsar discovered to emit UV and optical pulses. Here we present the results of the UV and X-ray phase-resolved timing analysis of observations performed with the Hubble Space Telescope, \textit{XMM-Newton} and NuSTAR satellites between 2014 and 2021. Ultraviolet pulsations are detected in the high luminosity mode and disappear during low and flaring modes, similar to what is observed in the X-ray band. In the high mode, we find variability in both the UV and X-ray pulse amplitudes. The root mean square pulsed amplitude in the UV band ranges from $\sim$2.1\% down to $\sim$0.7\%, while it oscillates in the interval $5.5-12\%$ in the X-ray band. This variability is not correlated with the orbital phase, like what has been observed in the optical band. Notwithstanding the rather low statistics, we have marginal evidence that variations in the pulse amplitude do not occur simultaneously in the UV and X-ray bands. When the UV pulsed amplitude decreases below the detection threshold, no significant variation in the X-ray pulsed amplitude is observed. These oscillations in the pulse amplitude could be caused by small random variations in the mass accretion rate leading to a variation in the size of the intra-binary shock region. Finally, we find that the pulsed flux spectral distribution from the X-ray to the UV band is well fitted using a power-law relation of the form $νF_ν^{pulsed} \sim ν^{0.4}$. This supports the hypothesis of a common physical mechanism underlying the X-ray, UV, and optical pulsed emissions in PSR\,J1023+0038.
description: 8 pages, 4 figures, accepted for publication in A&A
Resonant enhancement of the near-field radiative heat transfer in nanoparticles
Creators: name: Castillo-López, S. G.
name: Márquez, A.
name: Esquivel-Sirvent, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We numerically study the tuning of the radiative heat transfer between a spherical InSb nanoparticle in the vicinity of a flat SiC surface assisted by a static magnetic field. By changing the value of the applied magnetic field, the dielectric function of the nanosphere becomes anisotropic due to the excitation of magneto-plasmons. In the dipolar approximation, the plasmon resonance of the particle splits into two additional satellite resonances that shift to higher and lower frequencies as the field increases. When one of the particle resonances overlaps with the phonon-polariton frequency of the SiC surface, an enhancement of the heat transfer of two orders of magnitude is obtained. To understand the tuning of the radiative heat transfer, we present a detailed analysis of the nature of the modes that can be excited (surface, bulk, and hyperbolic).
WASP-35 and HAT-P-30/WASP-51: re-analysis using TESS and ground-based transit photometry
Creators: name: Bai, Lu
name: Gu, Shenghong
name: Wang, Xiaobin
name: Sun, Leilei
name: Kwok, Chi-Tai
name: Hui, Ho-Keung
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: High-precision transit observations provide excellent opportunities for characterizing the physical properties of exoplanetary systems. These physical properties supply many pieces of information for unvealing the internal structure, external atmosphere, and dynamical history of the planets. We present revised properties of transiting systems WASP-35 and HAT-P-30/WASP-51 through analyzing newly available TESS photometry and ground-based observations obtained at 1m telescope of Yunnan Observatories as well as from the literature. The improved system parameters are consistent with the previous results. Furthermore, we find that HAT-P-30b/WASP-51b's transits show significant timing variation which cannot be explained by decaying orbit due to tidal dissipation and the Rømer effect, while both apsidal precession and an additional perturbing body could reproduce this signal through our comprehensive dynamical simulations. Because both of them are valuable targets which are suitable for transmission spectroscopy, we make some predictions for atmospheric properties of WASP-35b and HAT-P-30b/WASP-51b based on newly derived system parameters.
description: 22 pages, 11 figures,accepted by AJ on 2022 Mar 5
Exploring the radio spectral energy distribution of the ultraluminous radio-quiet quasar SDSS J0100+2802 at redshift 6.3
Creators: name: Liu, Yuanqi
name: Wang, Ran
name: Momjian, Emmanuel
name: Wagg, Jeff
name: Yang, Xiaolong
name: An, Tao
name: Shao, Yali
name: Carilli, Chris L.
name: Wu, Xuebing
name: Fan, Xiaohui
name: Walter, Fabian
name: Jiang, Linhua
name: Li, Qiong
name: Li, Jianan
name: Fei, Qinyue
name: Xu, Fuxiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report deep Karl G. Jansky Very Large Array (VLA) observations of the optically ultraluminous and radio-quiet quasar SDSS J010013.02 + 280225.8 (hereafter J0100+2802) at redshift $z=$6.3. We detected the radio continuum emission at 1.5 GHz, 6 GHz, and 10 GHz. This leads to a radio power-law spectral index of $α= -0.52\pm0.18$ ($S \propto ν^α$). The radio source is unresolved in all VLA bands with an upper limit to the size of $0.2^{\prime \prime}$ (i.e., $\sim$ 1.1 kpc) at 10 GHz. We find variability in the flux density (increase by $\sim 33\%$) and the spectral index (steepened) between observations in 2016 and 2017. We also find that the VLA 1.5 GHz flux density observed in the same year is 1.5 times that detected with the Very Long Baseline Array (VLBA) in 2016 at the same frequency. This difference suggests that half of the radio emission from J0100+2802 comes from a compact core within 40 pc, and the rest comes from the surrounding few kpc area which is diffuse and resolved out in the VLBA observations. The diffuse emission is four times brighter than that would be expected if driven by star formation. We conclude that the central active galactic nucleus is the dominant power engine of the radio emission in J0100+2802.
description: 9 pages, 3 figures. Accepted for publication in The Astrophysical Journal
The Formation of Globular Clusters as a Case of Overcooling
Creators: name: Renzini, Alvio
name: Marino, Anna F.
name: Milone, Antonino P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Driven by recent observational findings, we select massive interactive binaries as the most suitable among the existing candidates for producing the chemical patterns typical of multiple populations of Galactic globular clusters. Still, to avoid supernova contamination we are further driven to endorse the notion that above a critical mass stars fail to produce supernova events, but rather eventually sink into black holes without ejecting much energy and heavy metals. This assumption has the attractive implication of suppressing star formation feedback for some 5--10 million years, in practice leading to runaway star formation, analog to {\it overcooling} that in absence of feedback would have turned most baryons into stars in the early Universe. Under such conditions, multiple episodes of stars formation, incorporating binary star ejecta from previous episodes, appear to be unavoidable, thus accounting for the ubiquity of the multiple population phenomenon in globular clusters.
description: 7 pages. Submitted December 13, 2021, in original form, accepter April 2, 2022. To appear on MNRAS
Multi-line assessment of narrow-line regions in $z \sim$ 3 radio galaxies
Creators: name: Terao, Koki
name: Nagao, Tohru
name: Onishi, Kyoko
name: Matsuoka, Kenta
name: Akiyama, Masayuki
name: Matsuoka, Yoshiki
name: Yamashita, Takuji
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper, we utilize high-quality rest-UV spectra of three radio galaxies at $z \sim$ 3 observed with VLT/FORS2 to measure the flux of several emission lines including relatively faint ones, such as NIV]$λ$1486, OIII]$λ$1663, and [NeIV]$λ$2424. Additionally, we collect fluxes of faint rest-UV emission lines in 12 $z \sim$ 3 radio galaxies from the literature. Previously, physical and chemical properties of narrow-line regions (NLRs) in high-$z$ active galactic nuclei (AGNs) have been investigated mostly by using only strong rest-UV emission-lines (e.g., NV$λ$1240, CIV$λ$1549, HeII$λ$1640, and CIII]$λ$1909). Such strong-line diagnostics are based on various assumptions due to the limitation in the number of available emission-line constraints. In this work, both physical and chemical properties of NLR clouds in each object are estimated by fitting detailed photoionization models to the measured emission-line fluxes. We confirm that the metallicity of NLRs in AGNs at $z \sim$ 3 is solar or super-solar, without assuming the gas density and ionization parameter thanks to the constrains from the faint emission lines. This result suggests that high-$z$ radio galaxies are already chemically matured at $z \sim$ 3.
description: 17 pages, 10 figures, accepted for publication in the ApJ
Cardiac monitoring during adjuvant trastuzumab therapy: Guideline adherence in clinical practice
Creators: name: Visser, Annemiek
name: Ven, Eline M. W. Van De
name: Ruczynski, Larissa I. A.
name: Blaisse, Reinoud J. B.
name: Halteren, Henk K. Van
name: Aben, Katja
name: Laarhoven, Hanneke W. M. Van
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Space Science
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Background. Cardiotoxicity is an important adverse effect of adjuvant breast cancer treatment with trastuzumab and three monthly left ventricular ejection fraction (LVEF) monitoring is considered mandatory. The purpose of this study was to gain insight into LVEF monitoring during adjuvant trastuzumab treatment in clinical practice. Material and methods. In a multicenter retrospective study encompassing 328 patients, of which 171 patients were actually treated with trastuzumab, we analyzed the frequency and mode of LVEF monitoring and compared it with LVEF monitoring guidelines. Results. The results indicated poor guideline adherence. In 9% of patients trastuzumab was started in spite of a low LVEF (< 55%). In 24% of patients no valid baseline LVEF value was available. LVEF measurements during treatment at three, six and 12 months were only performed in, respectively, 53%, 40% and 30% of patients. Conclusion. A significant proportion of patients are treated with trastuzumab, while LVEF monitoring is not adequately performed. More attention should be paid to the implementation of (cardiac assessment) guidelines in clinical practice.
Gravitomagnetic interaction of a Kerr black hole with a magnetic field as the source of the jetted GeV radiation of gamma-ray bursts
Creators: name: Rueda, J. A.
name: Ruffini, R.
name: Kerr, R. P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that the gravitomagnetic interaction of a Kerr black hole (BH) with a surrounding magnetic field induces an electric field that accelerates charged particles to ultra-relativistic energies in the vicinity of the BH. Along the BH rotation axis, these electrons/protons can reach energies of even thousands of PeV, so stellar-mass BHs in long gamma-ray bursts (GRBs) and supermassive BHs in active galactic nuclei (AGN) can contribute to the ultrahigh-energy cosmic rays (UHECRs) thorough this mechanism. At off-axis latitudes, the particles accelerate to energies of hundreds of GeV and emit synchrotron radiation at GeV energies. This process occurs within $60^\circ$ around the BH rotation axis, and due to the equatorial-symmetry, it forms a double-cone emission. We outline the theoretical framework describing these acceleration and radiation processes, how they extract the rotational energy of the Kerr BH and the consequences for the astrophysics of GRBs.
description: Accepted for publication in the ApJ
Stochastic gravitational-wave background searches and constraints on neutron-star ellipticity
Creators: name: De Lillo, Federico
name: Suresh, Jishnu
name: Miller, Andrew L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Rotating neutron stars (NSs) are promising sources of gravitational waves (GWs) in the frequency band of ground-based detectors. They are expected to emit quasi-monochromatic, long-duration GW signals, called continuous waves (CWs), due to their deviations from spherical symmetry. The degree of such deformations, and hence the information about the internal structure of a NS, is encoded in a dimensionless parameter $\varepsilon$ called ellipticity. Searches for CW signals from isolated Galactic NSs have shown to be sensitive to ellipticities as low as $\varepsilon \sim \mathcal{O}(10^{-9})$. These searches are optimal for detecting and characterising GWs from individual NSs, but they are not designed to measure the properties of NSs as population, such as the average ellipticity $\varepsilon_{\mathrm{av}}$. These ensemble properties can be determined by the measurement of the stochastic gravitational-wave background (SGWB) arising from the superposition of GW signals from individually-undetectable NSs. In this work, we perform a cross-correlation search for such a SGWB using the data from the first three observation runs of Advanced LIGO and Virgo. Finding no evidence for a SGWB signal, we set upper limits on the dimensionless energy density parameter $Ω_{\mathrm{gw}}(f)$. Using these results, we also constrain the average ellipticity of Galactic NSs and five NS ``hotspots'', as a function of the number of NSs emitting GWs within the frequency band of the search $N_{\mathrm{band}}$. We find $\varepsilon_{\mathrm{av}} \lesssim 1.8 \times 10^{-8}$, with $N_{\mathrm{band}}=1.6 \times 10^7$, for Galactic NSs, and $\varepsilon_{\mathrm{av}} \lesssim [3.5-11.8]\times 10^{-7}$, with $N_{\mathrm{band}}=1.6 \times 10^{10}$, for NS hotspots.
description: 10 pages, 6 figures, 2 tables