arXiv - PHYS - Cosmology and Nongalactic Astrophysics最新文献_第2页

Fast, Accurate and Perturbative Forward Modeling of Galaxy Clustering Part I: Galaxies in the Restframe 星系聚类的快速、精确和惯性前向建模第一部分：静止框架中的星系

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-17 DOI: arxiv-2409.10937

Julia Stadler, Fabian Schmidt, Martin Reinecke

{"title":"Fast, Accurate and Perturbative Forward Modeling of Galaxy Clustering Part I: Galaxies in the Restframe","authors":"Julia Stadler, Fabian Schmidt, Martin Reinecke","doi":"arxiv-2409.10937","DOIUrl":"https://doi.org/arxiv-2409.10937","url":null,"abstract":"Forward models of the galaxy density field enable simulation based inference\u0000as well as field level inference of galaxy clustering. However, these analysis\u0000techniques require forward models that are both computationally fast and robust\u0000to modeling uncertainties in the relation between galaxies and matter. Both\u0000requirements can be addressed with the Effective Field Theory of Large Scale\u0000Structure. Here, we focus on the physical and numerical convergence of the\u0000LEFTfield model. Based on the perturbative nature of the forward model, we\u0000derive an analytic understanding of the leading numerical errors, and we\u0000compare our estimates to high-resolution and N-body references. This allows us\u0000to derive a set of best-practice recommendations for the numerical accuracy\u0000parameters, which are completely specified by the desired order of the\u0000perturbative solution and the cut-off scale. We verify these recommendations by\u0000an extended set of parameter recovery tests from fully nonlinear mock data and\u0000find very consistent results. A single evaluation of the forward model takes\u0000seconds, making cosmological analyses of galaxy clustering data based on\u0000forward models computationally feasible.","PeriodicalId":501207,"journal":{"name":"arXiv - PHYS - Cosmology and Nongalactic Astrophysics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Systematic Search for Galaxies with Extended Emission Line and Potential Outflows in JADES Medium-Band Images 在 JADES 中波段图像中系统搜索具有扩展发射线和潜在外流的星系

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-17 DOI: arxiv-2409.11464

Yongda Zhu, Marcia J. Rieke, Zhiyuan Ji, Charlotte Simmonds, Fengwu Sun, Yang Sun, Stacey Alberts, Rachana Bhatawdekar, Andrew J. Bunker, Phillip A. Cargile, Stefano Carniani, Anna de Graaff, Kevin Hainline, Jakob M. Helton, Gareth C. Jones, Jianwei Lyu, George H. Rieke, Pierluigi Rinaldi, Brant Robertson, Jan Scholtz, Hannah Übler, Christina C. Williams, Christopher N. A. Willmer

{"title":"A Systematic Search for Galaxies with Extended Emission Line and Potential Outflows in JADES Medium-Band Images","authors":"Yongda Zhu, Marcia J. Rieke, Zhiyuan Ji, Charlotte Simmonds, Fengwu Sun, Yang Sun, Stacey Alberts, Rachana Bhatawdekar, Andrew J. Bunker, Phillip A. Cargile, Stefano Carniani, Anna de Graaff, Kevin Hainline, Jakob M. Helton, Gareth C. Jones, Jianwei Lyu, George H. Rieke, Pierluigi Rinaldi, Brant Robertson, Jan Scholtz, Hannah Übler, Christina C. Williams, Christopher N. A. Willmer","doi":"arxiv-2409.11464","DOIUrl":"https://doi.org/arxiv-2409.11464","url":null,"abstract":"For the first time, we systematically search for galaxies with extended\u0000emission line and potential outflows features using medium-band images in the\u0000GOODS-S field by comparing the morphology in medium-band images to adjacent\u0000continuum and UV bands. We look for galaxies that have a maximum extent 50%\u0000larger, an excess area 30% greater, or an axis ratio difference of more than\u00000.3 in the medium band compared to the reference bands. After visual\u0000inspection, we find 326 candidate galaxies at $1 < z < 6$, with a peak in the\u0000population near cosmic noon, benefiting from the good coverage of the\u0000medium-band filters. By examining their SEDs, we find that the candidate\u0000galaxies are at least 20% more bursty in their star-forming activity and have\u000060% more young stellar populations compared to a control sample selected based\u0000on the continuum band flux. Additionally, these candidates exhibit a\u0000significantly higher production rate of ionizing photons. We further find that\u0000candidates hosting known AGN produce extended emission that is more anisotropic\u0000compared to non-AGN candidates. A few of our candidates have been\u0000spectroscopically confirmed to have prominent outflow signatures through\u0000NIRSpec observations, showcasing the robustness of the photometric selection.\u0000Future spectroscopic follow-up will better help verify and characterize the\u0000kinematics and chemical properties of these systems.","PeriodicalId":501207,"journal":{"name":"arXiv - PHYS - Cosmology and Nongalactic Astrophysics","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in ArborX to support exascale applications 支持超大规模应用的 ArborX 技术进步

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-16 DOI: arxiv-2409.10743

Andrey Prokopenko, Daniel Arndt, Damien Lebrun-Grandié, Bruno Turcksin, Nicholas Frontiere, J. D. Emberson, Michael Buehlmann

{"title":"Advances in ArborX to support exascale applications","authors":"Andrey Prokopenko, Daniel Arndt, Damien Lebrun-Grandié, Bruno Turcksin, Nicholas Frontiere, J. D. Emberson, Michael Buehlmann","doi":"arxiv-2409.10743","DOIUrl":"https://doi.org/arxiv-2409.10743","url":null,"abstract":"ArborX is a performance portable geometric search library developed as part\u0000of the Exascale Computing Project (ECP). In this paper, we explore a\u0000collaboration between ArborX and a cosmological simulation code HACC. Large\u0000cosmological simulations on exascale platforms encounter a bottleneck due to\u0000the in-situ analysis requirements of halo finding, a problem of identifying\u0000dense clusters of dark matter (halos). This problem is solved by using a\u0000density-based DBSCAN clustering algorithm. With each MPI rank handling hundreds\u0000of millions of particles, it is imperative for the DBSCAN implementation to be\u0000efficient. In addition, the requirement to support exascale supercomputers from\u0000different vendors necessitates performance portability of the algorithm. We\u0000describe how this challenge problem guided ArborX development, and enhanced the\u0000performance and the scope of the library. We explore the improvements in the\u0000basic algorithms for the underlying search index to improve the performance,\u0000and describe several implementations of DBSCAN in ArborX. Further, we report\u0000the history of the changes in ArborX and their effect on the time to solve a\u0000representative benchmark problem, as well as demonstrate the real world impact\u0000on production end-to-end cosmology simulations.","PeriodicalId":501207,"journal":{"name":"arXiv - PHYS - Cosmology and Nongalactic Astrophysics","volume":"315 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring cosmological evolution and constraints in $f(T)$ teleparallel gravity 探索远距平行引力 $f(T)$ 中的宇宙学演化和约束条件

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-16 DOI: arxiv-2409.10757

M. Koussour, A. Altaibayeva, S. Bekov, F. Holmurodov, S. Muminov, J. Rayimbaev

引用次数: 0

The Three Hundred: The existence of massive dark matter-deficient satellite galaxies in cosmological simulations 三百星系宇宙学模拟中存在大质量暗物质缺乏的卫星星系

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-16 DOI: arxiv-2409.10356

Ana Contreras-Santos, Fernando Buitrago, Alexander Knebe, Elena Rasia, Frazer R. Pearce, Weiguang Cui, Chris Power, Jordan Winstanley

{"title":"The Three Hundred: The existence of massive dark matter-deficient satellite galaxies in cosmological simulations","authors":"Ana Contreras-Santos, Fernando Buitrago, Alexander Knebe, Elena Rasia, Frazer R. Pearce, Weiguang Cui, Chris Power, Jordan Winstanley","doi":"arxiv-2409.10356","DOIUrl":"https://doi.org/arxiv-2409.10356","url":null,"abstract":"The observation of a massive galaxy with an extremely low dark matter content\u0000(i.e. NGC 1277) has posed questions about how such objects form and evolve in a\u0000hierarchical universe. We here report on the finding of several massive, dark\u0000matter-deficient galaxies in a set of 324 galaxy clusters theoretically\u0000modelled by means of full-physics hydrodynamical simulations. We first focus on\u0000two example galaxies selected amongst the most massive and dark\u0000matter-deficient ones. By tracing the evolution of these galaxies, we find that\u0000their lack of dark matter is a result of multiple pericentre passages. While\u0000orbiting their host halo, tidal interactions gradually strip away dark matter\u0000while preserving the stellar component. A statistical analysis of all massive\u0000satellite galaxies in the simulated clusters shows that the stellar-to-total\u0000mass ratio today is strongly influenced by the number of orbits and the\u0000distance at pericentres. Galaxies with more orbits and closer pericentres are\u0000more dark matter-deficient. Additionally, we find that massive, dark\u0000matter-deficient galaxies at the present day are either the remnants of very\u0000massive galaxies at infall or former central galaxies of infalling groups. We\u0000conclude that such massive yet dark matter-deficient galaxies exist and are\u0000natural by-products of typical cluster galaxy evolution, with no specific\u0000requirement for an exotic formation scenario.","PeriodicalId":501207,"journal":{"name":"arXiv - PHYS - Cosmology and Nongalactic Astrophysics","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Independent Measure of the Kinematic Dipole from SDSS 从 SDSS 对运动偶极子进行独立测量

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-16 DOI: arxiv-2409.09946

Prabhakar TiwariGTIIT, Shantou, Dominik J. SchwarzBielefeld U., Gong-Bo ZhaoBeijing Observ., Ruth DurrerGeneva U., Dept. Theor. Phys., Martin KunzU. Geneva, Hamsa PadmanabhanU. Geneva

{"title":"An Independent Measure of the Kinematic Dipole from SDSS","authors":"Prabhakar TiwariGTIIT, Shantou, Dominik J. SchwarzBielefeld U., Gong-Bo ZhaoBeijing Observ., Ruth DurrerGeneva U., Dept. Theor. Phys., Martin KunzU. Geneva, Hamsa PadmanabhanU. Geneva","doi":"arxiv-2409.09946","DOIUrl":"https://doi.org/arxiv-2409.09946","url":null,"abstract":"We utilize the Sloan Digital Sky Survey (SDSS) extended Baryon Oscillation\u0000Spectroscopic Survey (eBOSS) and Baryon Oscillation Spectroscopic Survey (BOSS)\u0000catalogs with precise spectroscopic redshifts to estimate the kinematic\u0000redshift dipole caused by the proper motion of the Solar system. We find that\u0000the velocity extracted from the kinematic dipole is consistent with Cosmic\u0000Microwave Background inferred values. Although the small sky coverage and\u0000limited number density of the SDSS sources constrain us from obtaining precise\u0000and robust measurements, we leverage the redshift dipole method to estimate the\u0000kinematic dipole. The velocity measurements in this study are insensitive to\u0000intrinsic clustering, associated with the source count dipole. The kinematic\u0000dipole measured in this work and its consistency with CMB values do not\u0000guarantee isotropy at large scales. The anisotropy (excess dipole) measured\u0000with the NRAO VLA Sky Survey (NVSS) and the WISE Catalog (CatWISE) could be due\u0000to the intrinsic distribution of galaxies. The results in this work focus\u0000solely on the kinematic dipole term.","PeriodicalId":501207,"journal":{"name":"arXiv - PHYS - Cosmology and Nongalactic Astrophysics","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Redshift Drift fluctuations from N-body simulations 来自 N-体模拟的红移漂移波动

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-16 DOI: arxiv-2409.09977

Pedro Bessa, Valerio Marra, Tiago Castro

引用次数: 0

Spatially Resolved Kinematics of SLACS Lens Galaxies. I: Data and Kinematic Classification SLACS透镜星系的空间分辨运动学。I:数据和运动学分类

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-16 DOI: arxiv-2409.10631

Shawn Knabel, Tommaso Treu, Michele Cappellari, Anowar J. Shajib, Chih-Fan Chen, Vardha N. Bennert

{"title":"Spatially Resolved Kinematics of SLACS Lens Galaxies. I: Data and Kinematic Classification","authors":"Shawn Knabel, Tommaso Treu, Michele Cappellari, Anowar J. Shajib, Chih-Fan Chen, Vardha N. Bennert","doi":"arxiv-2409.10631","DOIUrl":"https://doi.org/arxiv-2409.10631","url":null,"abstract":"We obtain spatially resolved kinematics with the Keck Cosmic Web Imager\u0000(KCWI) integral-field spectrograph for a sample of 14 massive (11 < log10 M* <\u000012) lensing early-type galaxies (ETGs) at redshifts z=0.15-0.35 from the Sloan\u0000Lens ACS (SLACS) survey. We integrate within the galaxy effective radius and\u0000examine the rotational and dispersion velocities, showing that 11/14 are\u0000quantitatively classified as slow rotators in comparison with local galaxy\u0000surveys. Of key interest is the ability of this data to enable the precision\u0000required for cosmological inference with lensing time delays on scales of 1-2%\u0000uncertainty. The dataset is unprecedented for galaxy-scale lens galaxies, in\u0000terms of signal-to-noise ratio, sampling, and calibration. We test sources of\u0000systematic error and identify primary contributions from choice of stellar\u0000template library and wavelength range of the spectral fit. Systematics are\u0000quantified at the spatial bin level, resulting in systematic error at 3% and\u0000positive spatial covariance of 2%. We examine the effects of integration of the\u0000kinematic maps within circular apertures of different sizes and compare with\u0000SDSS single-aperture velocity dispersions. The most recent velocity dispersion\u0000estimates from SDSS spectra are found to be biased by a factor of 5.3% with\u0000respect to KCWI data, and to underestimate uncertainties. We examine\u0000correlations between scaling relations and show the correlations to agree with\u0000previous SLACS analysis with no statistically significant disagreement. A\u0000follow-up paper will present Jeans modeling and discuss the context of these\u0000observations within broader studies of galaxy evolution and cosmology.","PeriodicalId":501207,"journal":{"name":"arXiv - PHYS - Cosmology and Nongalactic Astrophysics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling V Modes: Enhancing CMB Sensitivity to BSM Physics with a Non-Ideal Half-Wave Plate 揭开 V 模式的面纱：利用非理想半波板提高 CMB 对 BSM 物理的灵敏度

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-16 DOI: arxiv-2409.10424

N. Raffuzzi, M. Lembo, S. Giardiello, M. Gerbino, M. Lattanzi, P. Natoli, L. Pagano

{"title":"Unveiling V Modes: Enhancing CMB Sensitivity to BSM Physics with a Non-Ideal Half-Wave Plate","authors":"N. Raffuzzi, M. Lembo, S. Giardiello, M. Gerbino, M. Lattanzi, P. Natoli, L. Pagano","doi":"arxiv-2409.10424","DOIUrl":"https://doi.org/arxiv-2409.10424","url":null,"abstract":"V-mode polarization of the cosmic microwave background is expected to be\u0000vanishingly small in the $Lambda$CDM model and, hence, usually ignored.\u0000Nonetheless, several astrophysical effects, as well as beyond standard model\u0000physics could produce it at a detectable level. A realistic half-wave plate -\u0000an optical element commonly used in CMB experiments to modulate the polarized\u0000signal - can provide sensitivity to V modes without significantly spoiling that\u0000to linear polarization. We assess this sensitivity for some new-generation CMB\u0000experiments, such as the LiteBIRD satellite, the ground-based Simons\u0000Observatory and a CMB-S4-like experiment. We forecast the efficiency of these\u0000experiments to constrain the phenomenology of certain classes of BSM models\u0000inducing mixing of linear polarization states and generation of V modes in the\u0000CMB. We find that new-generation experiments can improve current limits by\u00001-to-3 orders of magnitude, depending on the data combination. The inclusion of\u0000V-mode information dramatically boosts the sensitivity to these BSM models.","PeriodicalId":501207,"journal":{"name":"arXiv - PHYS - Cosmology and Nongalactic Astrophysics","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Three Hundred project: Radio luminosity evolution from merger-induced shock fronts in simulated galaxy clusters 三百项目：模拟星系团中由合并引发的冲击锋的射电光度演变

arXiv - PHYS - Cosmology and Nongalactic Astrophysics Pub Date : 2024-09-14 DOI: arxiv-2409.09422

Sebastián E. Nuza, Matthias Hoeft, Ana Contreras-Santos, Alexander Knebe, Gustavo Yepes

{"title":"The Three Hundred project: Radio luminosity evolution from merger-induced shock fronts in simulated galaxy clusters","authors":"Sebastián E. Nuza, Matthias Hoeft, Ana Contreras-Santos, Alexander Knebe, Gustavo Yepes","doi":"arxiv-2409.09422","DOIUrl":"https://doi.org/arxiv-2409.09422","url":null,"abstract":"Galaxy cluster mergers are believed to generate large-scale shock waves that\u0000are ideal sites for electron acceleration. We compute radio emission light\u0000curves for galaxy group and cluster mergers simulated in a cosmological context\u0000to study the dependence of radio luminosity on cluster mass, redshift, and\u0000impact parameter. We used model galaxy clusters from The Three Hundred project\u0000to identify cluster mergers characterised by the two main merging structures\u0000and follow their evolution throughout the simulated cosmic history. We found\u0000that the median non-thermal radio relic luminosity light curve produced in\u0000galaxy cluster mergers can be described by a skewed Gaussian function abruptly\u0000rising after core-passage of the secondary cluster that peaks after\u0000$sim0.1-0.8,$Gyr as a function of $M_{200,1}$, the mass of the primary,\u0000displaying a mass-dependent luminosity output increase of $lesssim10$ to about\u0000$gtrsim10-50$ times relative to the radio emission measured at core-passage\u0000for galaxy groups and clusters, respectively. In general, most merger orbits\u0000are fairly radial with a median opening angle of $sim20^{circ}$ before the\u0000collision. We also found that, independent of the cluster mass, less radial\u0000mergers tend to last longer, although the trend is weak. Finally, we found that\u0000the peak radio luminosity shows a significant correlation with mass,\u0000$P_{1.4}propto M_{200,1}^{2.05}$, demonstrating that this relation holds all\u0000the way up from galaxy group scales to the most massive galaxy clusters. We\u0000conclude that cluster mass is the primary driver for radio `gischt' median\u0000luminosity, although there are significant variations for a given cluster mass.\u0000Our simulations suggest that the shock-driven, non-thermal radio emission\u0000observed on cluster outskirts are the result of massive galaxy cluster mergers\u0000at $zlesssim1$, peaking at $zsim0-0.5$.","PeriodicalId":501207,"journal":{"name":"arXiv - PHYS - Cosmology and Nongalactic Astrophysics","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0