bluuebunny/crossref_metadata_2025_split huggingface dataset:
Is the Core-cusp Problem a Matter of Perspective? Jeans Anisotropic Modeling against Numerical Simulations
Authors: Wang Wenting , Zhu Ling , Li Zhaozhou , Chen Yang , Han Jiaxin , He Feihong , Yang Xiaohu , Jing Yipeng , Frenk Carlos , Nie Jialu , Tian Hao , Liu Chao , Cao Yanan , Qiu Xiaoqing , Helly John , Grand Robert J. J. , Gomez Facundo A. 
Published: December 2022

Abstract
Mock member stars for 28 dwarf galaxies are constructed from the cosmological auriga simulation, which reflects the dynamical status of realistic stellar tracers. Axisymmetric Jeans Anisotropic Multi-Gaussian Expansion (jam) modeling is applied to 6000 star particles for each system to recover the underlying matter distribution. The stellar or dark matter component individually is poorly recovered, but the total profile is constrained more reasonably. The mass within the half-mass radius of tracers is recovered the tightest, and the mass between 200 and 300 pc, M(200–300 pc), is an unbiasedly constrained ensemble, with a scatter of 0.167 dex. If using 2000 particles and only line-of-sight velocities with typical errors, the scatter in M(200–300 pc) is increased by ∼50%. Quiescent Saggitarius dSph–like systems and star-forming systems with strong outflows show distinct features, with M(200–300 pc) mostly underestimated for the former, and likely overestimated for the latter. The biases correlate with the dynamical status, which is a result of contraction motions due to tidal effects in quiescent systems or galactic winds in star-forming systems, driving them out of equilibrium. After including Gaia DR3 proper motion errors, we find proper motions can be as useful as line-of-sight velocities for nearby systems at < ∼60 kpc. By extrapolating the actual density profiles and the dynamical constraints down to scales below the resolution, we find the mass within 150 pc can be an unbiasedly constrained ensemble, with a scatter of ∼0.255 dex. We show that the contraction of member stars in nearby systems is detectable based on Gaia DR3 proper motion errors.
New Constraint on the Tensor-to-scalar Ratio from the Planck and BICEP/Keck Array Data Using the Profile Likelihood
Authors: Campeti Paolo , Komatsu Eiichiro 
Published: December 2022

Abstract
Motivated by the discrepancy between Bayesian and frequentist upper limits on the tensor-to-scalar ratio parameter r found by the SPIDER collaboration, we investigate whether a similar trend is also present in the latest Planck and BICEP/Keck Array data. We derive a new upper bound on r using the frequentist profile likelihood method. We vary all the relevant cosmological parameters of the ΛCDM model, as well as the nuisance parameters. Unlike the Bayesian analysis using Markov Chain Monte Carlo (MCMC), our analysis is independent of the choice of priors. Using Planck Public Release 4, BICEP/Keck Array 2018, Planck cosmic microwave background lensing, and baryon acoustic oscillation data, we find an upper limit of r < 0.037 at 95% Confidence Level (C.L.), similar to the Bayesian MCMC result of r < 0.038 for a flat prior on r and a conditioned Planck lowlEB covariance matrix.
Unusual Abundances from Planetary System Material Polluting the White Dwarf G238-44
Authors: Johnson Ted M , Klein Beth L. , Koester D. , Melis Carl , Zuckerman B. , Jura M. 
Published: December 2022

Abstract
Ultraviolet and optical spectra of the hydrogen-dominated atmosphere white dwarf star G238-44 obtained with FUSE, Keck/HIRES, HST/COS, and HST/STIS reveal 10 elements heavier than helium: C, N, O, Mg, Al, Si, P, S, Ca, and Fe. G238-44 is only the third white dwarf with nitrogen detected in its atmosphere from polluting planetary system material. Keck/HIRES data taken on 11 nights over 24 yr show no evidence for variation in the equivalent width of measured absorption lines, suggesting stable and continuous accretion from a circumstellar reservoir. From measured abundances and limits on other elements, we find an anomalous abundance pattern and evidence for the presence of metallic iron. If the pollution is from a single parent body, then it would have no known counterpart within the solar system. If we allow for two distinct parent bodies, then we can reproduce the observed abundances with a mix of iron-rich Mercury-like material and an analog of an icy Kuiper Belt object with a respective mass ratio of 1.7:1. Such compositionally disparate objects would provide chemical evidence for both rocky and icy bodies in an exoplanetary system and would be indicative of a planetary system so strongly perturbed that G238-44 is able to capture both asteroid and Kuiper Belt–analog bodies near-simultaneously within its <100 Myr cooling age.
The Cavity of 3CR 196.1: Hα Emission Spatially Associated with an X-Ray Cavity
Authors: Jimenez-Gallardo A. , Sani E. , Ricci F. , Mazzucchelli C. , Balmaverde B. , Massaro F. , Capetti A. , Forman W. R. , Kraft R. P. , Venturi G. , Gendron-Marsolais M. , Prieto M. A. , Marconi A. , Peña-Herazo H. A. , Baum S. A. , O’Dea C. P. , Lovisari L. , Gilli R. , Torresi E. , Paggi A. , Missaglia V. , Tremblay G. R. , Wilkes B. J. 
Published: December 2022

Abstract
We present a multifrequency analysis of the radio galaxy 3CR 196.1 (z=0.198), associated with the brightest galaxy of the cool-core cluster CIZAJ0815.4-0303. This nearby radio galaxy shows a hybrid radio morphology and an X-ray cavity, all signatures of a turbulent past activity, potentially due to merger events and active galactic nuclei (AGN) outbursts. We present results of the comparison between Chandra and Very Large Telescope Multi-Unit Spectroscopic Explorer data for the inner region of the galaxy cluster, on a scale of tens of kpc. We discovered Hα + [N ii]λ6584 emission spatially associated with the X-ray cavity (at ∼10 kpc from the galaxy nucleus) instead of with its rim. This result differs from previous discoveries of ionized gas surrounding X-ray cavities in other radio galaxies harbored in galaxy clusters and could represent the first reported case of ionized gas filling an X-ray cavity, either due to different AGN outbursts or to the cooling of warm (104 < T ≤ 107 K) AGN outflows. We also found that the Hα, [N ii]λ
λ6548, 6584, and [S ii]λ
λ6718, 6733 emission lines show an additional redward component, at ∼1000 km s−1 from rest frame, with no detection in Hβ or [O iii]λ
λ4960, 5008. We believe the most likely explanation for this redward component is the presence of a background gas cloud as there appears to be a discrete difference of velocities between this component and the rest frame.
Exploring Realistic Nanohertz Gravitational-wave Backgrounds
Authors: Bécsy Bence , Cornish Neil J. , Kelley Luke Zoltan 
Published: December 2022

Abstract
Hundreds of millions of supermassive black hole binaries are expected to contribute to the gravitational-wave signal in the nanohertz frequency band. Their signal is often approximated either as an isotropic Gaussian stochastic background with a power-law spectrum or as an individual source corresponding to the brightest binary. In reality, the signal is best described as a combination of a stochastic background and a few of the brightest binaries modeled individually. We present a method that uses this approach to efficiently create realistic pulsar timing array data sets using synthetic catalogs of binaries based on the Illustris cosmological hydrodynamic simulation. We explore three different properties of such realistic backgrounds that could help distinguish them from those formed in the early universe: (i) their characteristic strain spectrum, (ii) their statistical isotropy, and (iii) the variance of their spatial correlations. We also investigate how the presence of confusion noise from a stochastic background affects detection prospects of individual binaries. We calculate signal-to-noise ratios of the brightest binaries in different realizations for a simulated pulsar timing array based on the NANOGrav 12.5 yr data set extended to a time span of 15 yr. We find that ∼6% of the realizations produce systems with signal-to-noise ratios larger than 5, suggesting that individual systems might soon be detected (the fraction increases to ∼41% at 20 yr). These can be taken as a pessimistic prediction for the upcoming NANOGrav 15 yr data set, since it does not include the effect of potentially improved timing solutions and newly added pulsars.
LYRA. III. The Smallest Reionization Survivors
Authors: Gutcke Thales A. , Pfrommer Christoph , Bryan Greg L. , Pakmor Rüdiger , Springel Volker , Naab Thorsten 
Published: December 2022

Abstract
The dividing line between galaxies that are quenched by reionization (“relics”) and galaxies that survive reionization (i.e., continue forming stars) is commonly discussed in terms of a halo mass threshold. We probe this threshold in a physically more complete and accurate way than has been possible to date, using five extremely high resolution (M
target = 4 M
⊙) cosmological zoom-in simulations of dwarf galaxies within the halo mass range (1–4) × 109
M
⊙. The employed LYRA simulation model features resolved interstellar medium physics and individual, resolved supernova explosions. Interestingly, two out of five of the simulated dwarf galaxies lie close to the threshold mass but are neither full reionization relics nor full reionization survivors. These galaxies initially quench at the time of reionization but merely remain quiescent for ∼500 Myr. At z ∼ 5 they recommence star formation in a synchronous way and remain star-forming until the present day. The parallel timing indicates consistent sound-crossing and cooling times between the halos. While the star formation histories we find are diverse, we show that they are directly related to the ability of a given halo to retain and cool gas. Whereas the latter is most strongly dependent on the mass (or virial temperature) of the host halo at the time of reionization, it also depends on its growth history, the UV background (and its decrease at late times), and the amount of metals retained within the halo.
Numerical Modeling of Energetic Electron Acceleration, Transport, and Emission in Solar Flares: Connecting Loop-top and Footpoint Hard X-Ray Sources
Authors: Kong Xiangliang , Chen Bin , Guo Fan , Shen Chengcai , Li Xiaocan , Ye Jing , Zhao Lulu , Jiang Zelong , Yu Sijie , Chen Yao , Giacalone Joe 
Published: December 2022

Abstract
The acceleration and transport of energetic electrons during solar flares is one of the outstanding topics in solar physics. Recent X-ray and radio imaging and spectroscopy observations have provided diagnostics of the distribution of nonthermal electrons and suggested that, in certain flare events, electrons are primarily accelerated in the loop top and likely experience trapping and/or scattering effects. By combining the focused particle transport equation with magnetohydrodynamic (MHD) simulations of solar flares, we present a macroscopic particle model that naturally incorporates electron acceleration and transport. Our simulation results indicate that physical processes such as turbulent pitch-angle scattering can have important impacts on both electron acceleration in the loop top and transport in the flare loop, and their influences are highly energy-dependent. A spatial-dependent turbulent scattering with enhancement in the loop top can enable both efficient electron acceleration to high energies and transport of abundant electrons to the footpoints. We further generate spatially resolved synthetic hard X-ray (HXR) emission images and spectra, revealing both the loop-top and footpoint HXR sources. Similar to the observations, we show that the footpoint HXR sources are brighter and harder than the loop-top HXR source. We suggest that the macroscopic particle model provides new insights into understanding the connection between the observed loop-top and footpoint nonthermal emission sources by combining the particle model with dynamically evolving MHD simulations of solar flares.
AFM Force Measurements to Explore Grain Contacts with Relevance for Planetary Materials
Authors: Jardine Keanna , Dove Adrienne , Tetard Laurene 
Published: December 2022

Abstract
Most small asteroids are defined as “rubble piles” or bodies with zero tensile strength and large bulk porosity. The cohesive forces that hold them together act at the grain scale, and their magnitude is often estimated from similar materials when used in simulations. Improving the accuracy of predictions of asteroid strengths requires suitable laboratory measurements of relevant materials, as well as increasing the availability of materials from sample return. Atomic force microscopy (AFM) is well suited for force measurements relative to particle–particle interactions. In this work, we use AFM force measurements to evaluate the cohesive forces that act between micron-sized grains. We investigate the effect of the sizes of the interacting grains of JSC-1 lunar simulant using three sample sizes (<45, 75–125, and 125–250 μm) and three spherical AFM tip diameters (2 μm, 15 μm, and 45 μm). In all cases, adhesion forces were larger at ambient relative humidity (RH), where the water layer on the surface of the grains is more prominent, creating a larger meniscus between the tip and the grain upon contact. We observed weaker adhesion with larger grain/tip size, which can be attributed to the changing contact area between the samples and the tips. We expect that our approach will pave the way to a better understanding of regolith surface properties such as adhesion and cohesion and provide suitable input for models that can be used to predict the evolution of asteroids and their particle behaviors.
Spectroscopic Mapping of Io’s Surface with HST/STIS: SO2 Frost, Sulfur Allotropes, and Large-scale Compositional Patterns
Authors: Trumbo Samantha K. , Davis M. Ryleigh , Cassese Benjamin , Brown Michael E. 
Published: December 2022

Abstract
Io’s intense volcanic activity results in one of the most colorful surfaces in the solar system. Ultraviolet and visible-wavelength observations of Io are critical to uncovering the chemistry behind its volcanic hues. Here, we present global, spatially resolved ultraviolet-visible spectra of Io from the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, which bridge the gap between previous highly resolved imagery and disk-integrated spectroscopy, to provide an unprecedented combination of spatial and spectral detail. We use this comprehensive data set to investigate spectral endmembers, map observed spectral features associated with SO2 frost and other sulfur species, and explore possible compositions in the context of Io surface processes. In agreement with past observations, our results are consistent with extensive equatorial SO2 frost deposits that are stable over multidecade timescales, widespread sulfur-rich plains surrounding the SO2 deposits, and the enrichment of Pele’s pyroclastic ring and the high-latitude regions in metastable short-chain sulfur allotropes.
High Rates of Symptoms of Major Depressive Disorder and Panic Disorder in a Canadian Sample of Adolescents With Juvenile Idiopathic Arthritis
Authors: Li Lydia , Merchant Mehveen , Gordon Shelina , Lang Bianca , Ramsey Suzanne , Huber Adam M. , Gillespie Joanne , Lovas David , Stringer Elizabeth 
Published: December 2022

ObjectiveWe aimed to evaluate the rate of depressive and/or anxiety symptoms in adolescents with juvenile idiopathic arthritis (JIA) and to explore the association with demographic and disease activity measures.MethodsDepressive and anxiety symptoms were assessed in adolescents with JIA aged 12 to 18 years at a Canadian tertiary care hospital, using the Revised Child Anxiety and Depression Scale (RCADS). The RCADS includes 6 subscales: separation anxiety, social phobia, generalized anxiety, panic disorder, obsessive-compulsive, and major depressive disorder. Scores above clinical threshold on the RCADS subscales indicate that an individual’s responses reflect symptoms similar to those diagnosed with the corresponding mental health disorder. Fisher exact test and Mann-WhitneyUtest were used to compare demographic and disease-related variables between participants who scored above and below clinical threshold on each of the subscales.ResultsThere were 32/80 (40%) of participants who scored above clinical threshold on at least 1 subscale. Scores above clinical threshold were most frequent for major depressive disorder (23.8%) and panic disorder (22.5%) subscales. Social phobia and separation anxiety followed with 16.3% and 13.8%, respectively. Females were more likely to have scores above clinical threshold on the panic disorder subscale. Participants with higher self-reported disease activity were more likely to have scores above clinical threshold for all anxiety subscales except separation anxiety.ConclusionWe report high rates of symptoms of depression and anxiety (panic in particular) in adolescents with JIA. This highlights the ongoing need for mental health screening protocols and services. The relationships between concomitant mental health disorders, disease activity, and patient-reported outcomes requires further research.
Lower Frequency of Comorbidities Prior to Onset of Giant Cell Arteritis: A Population-Based Study
Authors: Elfishawi Mohanad , Rakholiya Jigisha , Gunderson Tina M. , Achenbach Sara J. , Crowson Cynthia S. , Matteson Eric L. , Turesson Carl , Wadström Karin , Weyand Cornelia , Koster Matthew J. , Warrington Kenneth J. 
Published: December 2022

ObjectiveTo assess the frequency of comorbidities and metabolic risk factors at and prior to giant cell arteritis (GCA) diagnosis.MethodsThis is a retrospective case control study of patients with incident GCA between January 1, 2000, and December 31, 2019, in Olmsted County, Minnesota. Two age- and sex-matched controls were identified, and each assigned an index date corresponding to an incidence date of GCA. Medical records were manually abstracted for comorbidities and laboratory data at incidence date, 5 years, and 10 years prior to incidence date. Twenty-five chronic conditions using International Classification of Diseases, 9th revision, diagnosis codes were also studied at incidence date and 5 years prior to incidence date.ResultsOne hundred and twenty-nine patients with GCA (74% female) and 253 controls were identified. At incidence date, the prevalence of diabetes mellitus (DM) was lower among patients with GCA (5% vs 17%;P= 0.001). At 5 years prior to incidence date, patients were less likely to have DM (2% vs 13%;P< 0.001) and hypertension (27% vs 45%;P= 0.002) and had a lower mean number (SD) of comorbidities (0.7 [1.0] vs 1.3 [1.4];P< 0.001) compared to controls. Moreover, patients had significantly lower median fasting blood glucose (FBG; 96 mg/dL vs 104 mg/dL;P< 0.001) and BMI (25.8 vs 27.7;P= 0.02) compared to controls. Multivariable logistic regression analysis revealed negative associations for FBG with GCA at 5 and 10 years prior to diagnosis/index date.ConclusionDM prevalence and median FBG and BMI were lower in patients with GCA up to 5 years prior to diagnosis, suggesting that metabolic factors influence the risk of GCA.
Real-World Retention and Clinical Effectiveness of Secukinumab for Psoriatic Arthritis: Results From the Canadian Spondyloarthritis Research Network
Authors: Gladman Dafna D. , Choquette Denis , Khraishi Majed , Inman Robert D. , Hussein Shamiza , Neish Drew , Leclerc Patrick 
Published: December 2022

ObjectivePsoriatic arthritis (PsA) is an immune-mediated disease characterized by pain, stiffness, and swelling of peripheral joints, with an estimated prevalence in Canada of 0.45%. Treatment aims to minimize disease activity, reduce progression of damage, and improve quality of life. Secukinumab (SEC) is a biologic disease-modifying antirheumatic drug (bDMARD) that has demonstrated efficacy and safety for PsA in clinical trials; however, there is limited real-world evidence on its use in Canada. The objective of this study was to use the Canadian Spondyloarthritis (CanSpA) Research Network to describe real-world retention and effectiveness of SEC among Canadian patients with PsA.MethodsThis was an observational cohort study of Canadian patients with PsA, 18 to 65 years of age, who attended a clinic of the CanSpA network and received treatment with SEC. Patients were indexed on the date they first initiated SEC. Retention was assessed at 12 months postindex. Clinical effectiveness was measured as the proportion of patients in remission and change in disease activity from baseline to 12 months using several clinical indices.ResultsIn total, 213 patients were included. Overall retention was estimated at 73.6% at 12 months (81.8% for bDMARD- or targeted synthetic DMARD-naïve patients). Out of 110 patients, 17 (15.5%) were in remission based on the Disease Activity Index in Psoriatic Arthritis in 28 joints, and 10 out of 70 patients (14.3%) were in remission based on the Psoriatic Arthritis Disease Activity Score at 12 months. The Psoriasis Area and Severity Index improved by 65.8%; the tender joint count in 68 joints and the swollen joint count in 66 joints improved by 65.5% and 73.7%, respectively.ConclusionThis is the first nationwide study that we know of to describe real-world use of SEC in Canada for PsA, and the results support its effectiveness in a Canadian real-world setting. The CanSpA network represents a unique opportunity to build and improve the real-world evidence base for SpA treatment in Canada.
Trois poèmes
Authors: Bouvier Agnès 
Published: December 2022

Comment « faire son deuil »…. je dirais plutôt comment apaiser la douleur de la perte. Écrire m’a permis de garder des portes ouvertes et d’exprimer viscéralement mes sensations face à l’intolérable. Depuis, régulièrement, je pose des mots que je mets en musique, ceux-ci évoluent avec le temps, le deuil nous bouleverse et nous oblige à vivre autrement.
Une reconsidération du discours rapporté en langue parlée avec être là , faire ( à quelqu’un ) et se dire
Authors: Fiedler Sophia 
Published: December 2022

Cet article étudie le discours rapporté en français parlé à partir de trois introducteurs : être là , faire ( à quelqu’un ) et se dire . Ces clauses « introduisent » des citations de formats divers : sons, clauses complètes et/ou mouvements du corps. Les recherches pionnières sur la langue parlée ne s’accordent pas sur le statut syntaxique des citations : alors que Blanche-Benveniste (1988) soutient que les citations directes sont grammaticalement « informes », de Cornulier (1978) n’exclut pas qu’elles aient un statut de complément. En examinant 12h d’enregistrements vidéo de conversations quotidiennes, l’article illustrera le fait que l’intégration des mouvements corporels dans une grammaire de la langue parlée peut être utile. L’apport de la linguistique interactionnelle montrera qu’ être là , faire ( à quelqu’un ) et se dire sont fonctionnellement distribués dans l’interaction.
Si vous avez quelqu’un sous la main : les si-indépendantes en tant que format de requête
Authors: Horlacher Anne-Sylvie , Pekarek Doehler Simona 
Published: December 2022

Cet article interroge les structures si-indépendantes ( si vous avez quelqu’un sous la main ) fonctionnant en tant que requêtes dans un corpus d’appels d’urgence à la police. Sur le plan grammatical, ces structures peuvent être rapprochées de conditionnelles du type [ si-X , (alors) Y]) dont la clause principale n’est pas produite ; elles relèvent ainsi du phénomène de l’insubordination. L’analyse se concentre sur la dimension fonctionnelle des si-indépendantes , en montrant qu’à travers la formulation en si , le citoyen indexe sa propre autorité déontique réduite et donne à l’opérateur de la centrale téléphonique toute la latitude possible pour décliner la requête, celui-ci pouvant justement nier l’existence des conditions sine qua non évoquées dans la structure [ si-X ]. L’étude démontre en quoi une approche interactionnelle permet de mieux comprendre les motivations fonctionnelles des structures dites insubordonnées.