bluuebunny/crossref_metadata_2025_split huggingface dataset:
Statistical Plasma Properties of the Planar and Nonplanar ICME Magnetic Clouds during Solar Cycles 23 and 24
Authors: Shaikh Zubair I. , Raghav Anil N. 
Published: October 2022

Abstract
Various remote and in situ observations, along with several models, simulations, and kinetic studies, have been proposed in recent years, suggesting that the morphology of an interplanetary coronal mass ejection (ICME) magnetic cloud can vary from cylindrical, elliptical, toroidal, flattened, pancaked, etc. Recently, Raghav et al. proposed for the first time a unique morphological characteristic of an ICME magnetic cloud at 1 au that showed characteristics of a planar magnetic structure, using in situ data from the ACE spacecraft. In this study, we statistically investigate the plasma properties of planar and nonplanar ICMEs from 1998–2017 at 1 au. The detailed study of 469 ICMEs suggests that 136 (∼29%) ICMEs are planar, whereas 333 (∼71%) are nonplanar. Furthermore, total interplanetary magnetic field strength, average plasma parameters, i.e., plasma density, beta, thermal pressure, and magnetic pressure in planar ICME, are significantly higher than in the nonplanar ICME. Also, we noticed that the thickness of planar ICMEs is less compared to nonplanar ICMEs. This analysis demonstrates that planar ICMEs are formed due to the high compression of ICME. Moreover, we also observed the southward/northward magnetic field component’s double strength during planar ICMEs compared to nonplanar ICMEs. It implies that planar ICMEs are more geoeffective than nonplanar ICMEs.
Compact Dust Emission in a Gravitationally Lensed Massive Quiescent Galaxy at z = 2.15 Revealed in ∼130 pc Resolution Observations by the Atacama Large Millimeter/submillimeter Array
Authors: Morishita T. , Abdurro’uf  , Hirashita H. , Newman A. B. , Stiavelli M. , Chiaberge M. 
Published: October 2022

Abstract
We present new observations of MRG-M2129, a quiescent galaxy at z = 2.15, with the Atacama Large Millimeter/submillimeter Array (ALMA). With the combination of the effect of gravitational lensing by the foreground galaxy cluster and the angular resolution provided by ALMA, our data reveal 1.2 mm continuum emission at ∼130 pc angular resolution. Compact dust continuum is detected at 7.9σ in the target but displaced from its stellar peak position by 62 ± 38 mas, or ∼169 ± 105 pc in the source plane. We find a considerably high dust-to-stellar mass ratio, 4 × 10−4. From nondetection of the [C i] 3P2 → 3P1 line, we derive 3σ upper limits on the molecular gas-to-dust mass ratio δ
GDR < 60 and the molecular gas-to-stellar mass ratio f
H2 < 2.3%. The derived δ
GDR is ≳2× smaller than the typical value assumed for quiescent galaxies in the literature. Our study supports the idea that there exists a broad range of δ
GDR and urges submillimeter follow-up observations of quenching/recently quenched galaxies at similar redshifts. Based on the inferred low δ
GDR and other observed properties, we argue that the central black hole is still active and regulates star formation in the system. Our study exhibits a rare case of a gravitationally lensed type 2 QSO harbored by a quiescent galaxy.
The Propagation of Coherent Waves Across Multiple Solar Magnetic Pores
Authors: Grant S. D. T. , Jess D. B. , Stangalini M. , Jafarzadeh S. , Fedun V. , Verth G. , Keys P. H. , Rajaguru S. P. , Uitenbroek H. , MacBride C. D. , Bate W. , Gilchrist-Millar C. A. 
Published: October 2022

Abstract
Solar pores are efficient magnetic conduits for propagating magnetohydrodynamic wave energy into the outer regions of the solar atmosphere. Pore observations often contain isolated and/or unconnected structures, preventing the statistical examination of wave activity as a function of the atmospheric height. Here, using high-resolution observations acquired by the Dunn Solar Telescope, we examine photospheric and chromospheric wave signatures from a unique collection of magnetic pores originating from the same decaying sunspot. Wavelet analysis of high-cadence photospheric imaging reveals the ubiquitous presence of slow sausage-mode oscillations, coherent across all photospheric pores through comparisons of intensity and area fluctuations, producing statistically significant in-phase relationships. The universal nature of these waves allowed an investigation of whether the wave activity remained coherent as they propagate. Utilizing bisector Doppler velocity analysis of the Ca ii 8542 Å line, alongside comparisons of the modeled spectral response function, we find fine-scale 5 mHz power amplification as the waves propagate into the chromosphere. Phase angles approaching zero degrees between co-spatial line depths spanning different line depths indicate standing sausage modes following reflection against the transition region boundary. Fourier analysis of chromospheric velocities between neighboring pores reveals the annihilation of the wave coherency observed in the photosphere, with examination of the intensity and velocity signals from individual pores indicating they behave as fractured waveguides, rather than monolithic structures. Importantly, this work highlights that wave morphology with atmospheric height is highly complex, with vast differences observed at chromospheric layers, despite equivalent wave modes being introduced into similar pores in the photosphere.
A Magnetic Valve at L1 Revealed in TESS Photometry of the Asynchronous Polar BY Cam
Authors: Mason Paul A. , Littlefield Colin , Monroy Lorena C. , Morales John F. , Hakala Pasi , Garnavich Peter , Szkody Paula , Kennedy Mark R. , Ramsay Gavin , Scaringi Simone 
Published: October 2022

Abstract
We present TESS photometry of the asynchronous polar BY Cam, which undergoes a beat cycle between the 199.384 min white dwarf (WD) spin period and the 201.244 min orbital period. This results in changes in the flow of matter onto the WD. The TESS light curve covers 92% of the beat cycle once and 71% of the beat cycle twice. The strongest photometric signal, at 197.560 min, is ascribed to a side-band period. During times of light-curve stability, the photometry modulates at the spin frequency, supporting our WD spin-period identification. Both one-pole and two-pole accretion configurations repeat from one beat cycle to the next with clear and repeatable beat-phase-dependent intensity variations. To explain these, we propose the operation of a magnetic valve at L1. The magnetic valve modulates the mass-transfer rate, as evidenced by a factor of 5 variation in orbital-averaged intensity, over the course of the beat cycle in a repeatable manner. The accretion stream threading distance from the WD is also modulated at the beat period, because of the variation of the WD magnetic field with respect to the stream and because of changes in the mass transfer rate due to the operation of the magnetic valve. Changes in the threading distance result in significant shifts in the position of accreting spots around the beat cycle. As a consequence, only the faintest photometric minima allow for an accurate ephemeris determination. Three regions on the WD appear to receive most of the accretion flow, suggestive of a complex WD magnetic field.
LensingETC: A Tool to Optimize Multifilter Imaging Campaigns of Galaxy-scale Strong Lensing Systems
Authors: Shajib Anowar J. , Glazebrook Karl , Barone Tania , Lewis Geraint F. , Jones Tucker , Tran Kim-Vy H. , Buckley-Geer Elizabeth , Collett Thomas E. , Frieman Joshua , Jacobs Colin 
Published: October 2022

Abstract
Imaging data is the principal observable required to use galaxy-scale strong lensing in a multitude of applications in extragalactic astrophysics and cosmology. In this paper, we develop Lensing Exposure Time Calculator (LensingETC; https://github.com/ajshajib/LensingETC) to optimize the efficiency of telescope-time usage when planning multifilter imaging campaigns for galaxy-scale strong lenses. This tool simulates realistic data tailored to specified instrument characteristics and then automatically models them to assess the power of the data in constraining lens model parameters. We demonstrate a use case of this tool by optimizing a two-filter observing strategy (in the IR and ultraviolet-visual (UVIS)) within the limited exposure time per system allowed by a Hubble Space Telescope (HST) Snapshot program. We find that higher resolution is more advantageous to gain constraining power on the lensing observables, when there is a trade-off between signal-to-noise ratio and resolution; for example, between the UVIS and IR filters of the HST. We also find that, whereas a point-spread function (PSF) with sub-Nyquist sampling allows the sample mean for a model parameter to be robustly recovered for both galaxy–galaxy and point-source lensing systems, a sub-Nyquist-sampled PSF introduces a larger scatter than a Nyquist-sampled one in the deviation from the ground truth for point-source lens systems.
The Chocolate Chip Cookie Model: Dust Geometry of Milky Way–like Disk Galaxies
Authors: Lu 卢 Jiafeng 家风 , Shen 沈 Shiyin 世银 , Yuan 袁 Fang-Ting 方婷 , Shao 邵 Zhengyi 正义 , Hou 侯 Jinliang 金良 , Zheng 郑 Xianzhong 宪忠 
Published: October 2022

Abstract
We present a new two-component dust geometry model, the Chocolate Chip Cookie model, where the clumpy nebular regions are embedded in a diffuse stellar/interstellar medium disk, like chocolate chips in a cookie. By approximating the binomial distribution of the clumpy nebular regions with a continuous Gaussian distribution and omitting the dust scattering effect, our model solves the dust attenuation process for both the emission lines and stellar continua via analytical approaches. Our Chocolate Chip Cookie model successfully fits the inclination dependence of both the effective dust reddening of the stellar components derived from stellar population synthesis and that of the emission lines characterized by the Balmer decrement for a large sample of Milky Way–like (MW-like) disk galaxies selected from the main galaxy sample of the Sloan Digital Sky Survey. Our model shows that the clumpy nebular disk is about 0.55 times thinner and 1.6 times larger than the stellar disk for MW-like galaxies, whereas each clumpy region has a typical optical depth of τ
cl,V
∼ 0.5 in the V band. After considering the aperture effect, our model prediction on the inclination dependence of dust attenuation is also consistent with observations. Not only that, in our model, the dust attenuation curve of the stellar population naturally depends on the inclination, and its median case is consistent with the classical Calzetti law. As the modeling constraints are from the optical wavelengths, our model is unaffected by the optically thick dust component, which however could bias the model’s prediction of the infrared emissions.
Combined Effects of f(R) Gravity and Massive Neutrinos on the Turnaround Radii of Dark Matter Halos
Authors: Lee Jounghun , Baldi Marco 
Published: October 2022

Abstract
We present a new statistics based on the turnaround radii of cluster halos to break the dark sector degeneracy between the ΛCDM model and the alternative ones with f(R) gravity and massive neutrinos (ν) characterized by the strength of the fifth force, ∣f

R0∣, and the total neutrino mass, M

ν
. Analyzing the Rockstar halo catalogs at the present epoch from the DUSTGRAIN-pathfinder
N-body simulations performed for four different cosmologies, namely, ΛCDM (∣f

R0∣ = 0, ∑m

ν
= 0.0 eV), fR6 (∣f

R0∣ = 10−6, ∑m

ν
= 0.0 eV), fR6+0.06 eV(∣f

R0∣ = 10−6, ∑m

ν
= 0.06 eV), and fR5+0.15 eV(∣f

R0∣ = 10−5, ∑m

ν
= 0.15 eV), which are known to yield very similar conventional statistics to one another. For each model, we select those cluster halos that do not neighbor any other larger halos in their bound zones and construct their bound-zone peculiar velocity profiles at z = 0. Then, we determine the radial distance of each selected halo at which the bound-zone velocity becomes equal to the recession speed of the Hubble flow as its turnaround radius, and evaluate the cumulative probability distribution of the ratios of the turnaround radii to the virial counterparts, P(r

t
/r

v
≥ α). The degeneracy between the fR6 and fR5+0.15 eV models is found to be readily broken by the 10σ
ΔP
difference in the value of P(α = 4), while the 3.2σ
ΔP
difference between the ΛCDM and fR6+0.06 eV models is detected in the value of P(α = 8.5). It is also found that the four models yield smaller differences in P(α) at higher redshifts.
Uniform Recalibration of Common Spectrophotometry Standard Stars onto the CALSPEC System Using the SuperNova Integral Field Spectrograph
Authors: Rubin David , Aldering G. , Antilogus P. , Aragon C. , Bailey S. , Baltay C. , Bongard S. , Boone K. , Buton C. , Copin Y. , Dixon S. , Fouchez D. , Gangler E. , Gupta R. , Hayden B. , Hillebrandt W. , Kim A. G. , Kowalski M. , Küsters D. , Léget P.-F. , Mondon F. , Nordin J. , Pain R. , Pecontal E. , Pereira R. , Perlmutter S. , Ponder K. A. , Rabinowitz D. , Rigault M. , Runge K. , Saunders C. , Smadja G. , Suzuki N. , Tao C. , Taubenberger S. , Thomas R. C. , Vincenzi M. ,   (The Nearby Supernova Factory)
Published: October 2022

Abstract
We calibrate spectrophotometric optical spectra of 32 stars commonly used as standard stars, referenced to 14 stars already on the Hubble Space Telescope–based CALSPEC flux system. Observations of CALSPEC and non-CALSPEC stars were obtained with the SuperNova Integral Field Spectrograph over the wavelength range 3300–9400 Å as calibration for the Nearby Supernova Factory cosmology experiment. In total, this analysis used 4289 standard-star spectra taken on photometric nights. As a modern cosmology analysis, all presubmission methodological decisions were made with the flux scale and external comparison results blinded. The large number of spectra per star allows us to treat the wavelength-by-wavelength calibration for all nights simultaneously with a Bayesian hierarchical model, thereby enabling a consistent treatment of the Type Ia supernova cosmology analysis and the calibration on which it critically relies. We determine the typical per-observation repeatability (median 14 mmag for exposures ≳5 s), the Maunakea atmospheric transmission distribution (median dispersion of 7 mmag with uncertainty 1 mmag), and the scatter internal to our CALSPEC reference stars (median of 8 mmag). We also check our standards against literature filter photometry, finding generally good agreement over the full 12 mag range. Overall, the mean of our system is calibrated to the mean of CALSPEC at the level of ∼3 mmag. With our large number of observations, careful cross-checks, and 14 reference stars, our results are the best calibration yet achieved with an integral-field spectrograph, and among the best calibrated surveys.
GWFAST: A Fisher Information Matrix Python Code for Third-generation Gravitational-wave Detectors
Authors: Iacovelli Francesco , Mancarella Michele , Foffa Stefano , Maggiore Michele 
Published: October 2022

Abstract
We introduce GWFAST (https://github.com/CosmoStatGW/gwfast), a Fisher information matrix Python code that allows for easy and efficient estimation of signal-to-noise ratios and parameter measurement errors for large catalogs of resolved sources observed by networks of gravitational-wave (GW) detectors. In particular, GWFAST includes the effects of the Earth’s motion during the evolution of the signal, supports parallel computation, and relies on automatic differentiation rather than on finite differences techniques, which makes possible the computation of derivatives with accuracy close to machine precision. We also release the library WF4Py (https://github.com/CosmoStatGW/WF4Py) implementing state-of-the-art GW waveforms in Python. In this paper we provide a documentation of GWFAST and WF4Py with practical examples and tests of performance and reliability. In the companion paper Iacovelli et al. we present forecasts for the detection capabilities of the second and third generation of ground-based GW detectors, obtained with GWFAST.
Menisporopsis aquatica sp. nov. (Sordariomycetes, Chaetosphaeriales, Chaetosphaeriaceae), from freshwater habitat in China
Authors: Chen Jia-Hao , Hu Dian-Ming , Song Hai-Yan , Zhai Zhi-Jun , Lai Lin , Lin Kang-Hui 
Published: October 2022

Freshwater fungi are an integral part of freshwater ecosystems. They promote the carbon cycle of the ecosystem by decomposing wood substrates. Menisporopsis is a fungal genus of Chaetosphaeriales in Sordariomycetes, which has been commonly collected from aquatic and marine environments. Most species of this genus are saprophytes.
Here, a new freshwater hyphomycetous fungus, Menisporopsis aquatica, reported from submerged rotten wood samples collected in a stream in Zhejiang Province, south-eastern China. The new species is characterised by hyaline conidia appendiculate with 1-2 setulae at each end and synnematous conidiophores growing closely around a black central seta. Molecular phylogeny of Menisporopsis was studied using a combined two-loci dataset, including the internal transcribed spacer sequences (ITS) and the nuclear ribosomal large subunit gene sequences (nrLSU). The new species is illustrated and a synopsis of the Menisporopsis species is presented in this paper.
A new species of Orthobula Simon, 1897 (Araneae, Trachelidae) from South China
Authors: Zhang Mengzhen , Ma Ning , Jiang Zimin , Xiao Yonghong , Liu Keke 
Published: October 2022

Only one trachelid species, Trachelas sinensis Chen, Peng & Zhao, 1995 has been recorded from Jiangxi Province to date.
A new species, Orthobula jiangxi Liu, sp. n., is described from Jiangxi Province of China, based on both sexes. Morphological illustrations are provided and its distribution is mapped.
La vie des espaces numériques de deuil : entre individus et collectif
Authors: Desjardins Guillaume , Papi Cathia 
Published: October 2022

Comme la plupart des pratiques, celles relatives au deuil, ont intégré le numérique et, ce faisant, se sont transformées. Loin d’être réservées à un espace-temps particulier tel que le cimetière lors de l’enterrement ou de moments de recueillement, les pratiques relatives au deuil en ligne semblent constamment possibles. En effet, les groupes numériques de deuil permettent de poster un message au défunt ou aux autres endeuillés membre du groupe, de lire leurs messages, voire d’interagir avec eux à tout moment et en tout lieu. Dès lors, comment s’organise cette communication ? Alors que la recherche dans le domaine a déjà mis en avant le travail de commémoration et de deuil en jeu dans ces groupes, nous proposons ici de nous intéresser plus particulièrement à la dynamique d’un groupe en faisant ressortir des types de communication différenciés selon les membres du groupe.
Deuil périnatal en ligne : différences de genre dans les groupes Facebook
Authors: Sani Livia , Bacqué Marie-Frédérique 
Published: October 2022

Quelles sont les différences liées au genre entre les parents qui participent et communiquent sur leur deuil dans les groupes en ligne sur la perte périnatale ? Les 473 posts publiés en un mois sur un groupe Facebook, tiré au hasard parmi les pages dédiées au deuil périnatal, ont été analysés par une méthode inductive. Quatre catégories thématiques ont été identifiées. La participation maternelle était prédominante, ainsi que le besoin d’exprimer les difficultés émotionnelles, partager les photos du bébé et des informations. Contrairement aux mères, il est donc possible que les hommes ne perçoivent pas encore la possibilité ou le besoin d’exprimer une expérience affective non normative de leur deuil et ainsi de pouvoir partager leur douleur. Continuer à enquêter sur cette question reste fondamental car ce deuil spécifique concerne de jeunes parents utilisateurs privilégiés du monde numérique.
Design et développement d’un prototype de magasin connecté pour les petites entreprises
Authors: Bendavid Ygal , Hachani Mohamed Wael , Rostampour Samad 
Published: October 2022

Au cours des dernières années, la poursuite d’une stratégie numérique des entreprises dans le secteur de la vente au détail et, plus récemment, l’utilisation croissante des technologies de l’Internet des Objets (IdO), permettent l’élimination des frontières entre le commerce en ligne et le commerce dans les points de vente physiques. Grâce aux technologies IdO, comme ressources informationnelles et connectives uniques, les entreprises développent de nouvelles capacités décisionnelles. Toutefois, ces technologies profitent surtout aux grandes entreprises et aux chaînes de magasins vs aux petites entreprises pour qui ces projets semblent hors de portée. L’objectif de cette recherche porte à la fois sur un prototype IdO de magasin connecté « accessible », mais aussi sur le processus même de design et de développement du prototype. Pour réaliser ce projet, nous proposons un design de solution qui couvre diverses fonctions, depuis l’identification et le suivi automatique des produits, jusqu’au traitement de l’information en temps réel par les gestionnaires. Il en ressort que les technologies basées sur la radio-identification (RFID), comme standard dominant dans les magasins connectés, sont matures, stables, performantes et financièrement abordables. La complexité de tels projets réside surtout dans le traitement des données, dans leur conversion en informations utiles à la prise de décision, mais cette barrière s’estompe progressivement par la disponibilité croissante d’outils via des plateformes de gestion et de développement de logiciels. Une collaboration industrie-université pour le développement de telles solutions IdO dans des petites entreprises est une piste à exploiter.
La sélection de prestataires de services logistiques à l’ère de l’internet physique et de l’internet des objets
Authors: Hao Yuan , Ounnar Fouzia , Pujo Patrick , Paché Gilles 
Published: October 2022

Les innovations des technologies de l’information et de la communication touchent l’écosystème industriel et impactent le monde de la logistique par l’interconnexion forte des objets et/ou des acteurs. L’Internet Physique se met notamment en place au travers de réseaux interconnectés et il exploite un ensemble standard de protocoles collaboratifs de routage, de conteneurs modulaires et d’interfaces intelligentes, posant le problème d’un pilotage du système logistique global, ouvert et efficient. L’Internet Physique semble être un concept prometteur en vue de parvenir à une logistique plus durable sur le triple plan environnemental, financier et social. Parallèlement, la question d’un pilotage auto-organisé est désormais au centre de nombreuses investigations relatives à son opérationnalisation au travers des systèmes cyber-physiques, tout particulièrement en référence à une aide multicritère à la décision pour la sélection des prestataires de services logistiques (PSL), dans un contexte d’externalisation logistique accrue. De multiples travaux académiques s’intéressent à l’importance prise par les PSL, à l’évaluation de leurs performances et à leur sélection. La note de recherche porte tout particulièrement sur le processus de sélection des PSL à l’ère de l’Internet Physique et de l’Internet des Objets lorsque sont associés des éléments liés au développement durable ; la façon dont ces éléments influencent le système logistique est examinée ici en fonction du modèle de la chaîne de valeur.
La dette publique et l’équité intergénérationnelle
Authors: Sterdyniak Henri 
Published: October 2022

Le haut niveau des dettes publiques et le bas niveau des taux d’intérêt dans les pays avancés s’expliquent par des caractéristiques de la phase actuelle du capitalisme financiarisé. Les déficits publics actuels ne proviennent pas de la démagogie des gouvernements, ce sont des déficits de régulation comme prônés par la finance fonctionnelle. La société et l’État ont la responsabilité d’établir l’équité intergénérationnelle, une évolution satisfaisante du bien-être des générations successives ; celle-ci n’est pas mise en cause par la dette publique, tant que la règle d’or des finances publiques est respectée, et surtout tant que le taux d’intérêt est inférieur au taux de croissance.