The SRG/eROSITA All-Sky Survey

被引：0

作者：

Artis, E. ^{[1
]}

Ghirardini, V. ^{[1
]}

Bulbul, E. ^{[1
]}

Grandis, S. ^{[2
,5
]}

Garrel, C. ^{[1
]}

Clerc, N. ^{[3
]}

Seppi, R. ^{[1
,7
]}

Comparat, J. ^{[1
]}

Cataneo, M. ^{[4
]}

Bahar, Y. E. ^{[1
]}

Balzer, F. ^{[1
]}

Chiu, I. ^{[8
]}

Gruen, D. ^{[5
]}

Kleinebreil, F. ^{[2
,4
]}

Kluge, M. ^{[1
]}

Krippendorf, S. ^{[5
,6
]}

Li, X. ^{[10
]}

Liu, A. ^{[1
]}

Merloni, A. ^{[1
]}

Miyatake, H. ^{[12
,13
,14
]}

Miyazaki, S. ^{[11
]}

Nandra, K. ^{[1
]}

Okabe, N. ^{[9
]}

Pacaud, F. ^{[4
]}

Predehl, P. ^{[1
]}

Ramos-Ceja, M. E. ^{[1
]}

Reiprich, T. H. ^{[4
]}

Sanders, J. S. ^{[1
]}

Schrabback, T. ^{[2
,4
]}

Zelmer, S. ^{[1
]}

Zhang, X. ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany

[2] Univ Innsbruck, Inst Astround Teilchenphys, Technikerstr 25-8, A-6020 Innsbruck, Austria

[3] Univ Toulouse, IRAP, CNRS, UPS,CNES, F-31028 Toulouse, France

[4] Univ Bonn, Argelander Inst Astron AIfA, Hugel 71, D-53121 Bonn, Germany

[5] Ludwig Maximilians Univ Munchen, Univ Sternwarte, Scheinerstr 1, D-81679 Munich, Germany

[6] Ludwig Maximilians Univ Munchen, Arnold Sommerfeld Ctr Theoret Phys, Theresienstr 37, D-80333 Munich, Germany

[7] Univ Geneva, Dept Astron, Ch Ec 16, CH-1290 Versoix, Switzerland

[8] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

[9] Hiroshima Univ, Dept Phys Sci, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan

[10] Carnegie Mellon Univ, McWilliams Ctr Cosmol, Dept Phys, Pittsburgh, PA 15213 USA

[11] Natl Astron Observ Japan, Subaru Telescope, 650 N Aohoku,Pl Hilo, Hilo, HI 96720 USA

[12] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Univers, Nagoya, 4648602, Japan

[13] Nagoya Univ, Inst Adv Res, Nagoya 4648601, Japan

[14] Univ Tokyo, Inst Adv Study UTIAS, Kavli Inst Phys & Math Universe WPI, Chiba 2778583, Japan

来源：

ASTRONOMY & ASTROPHYSICS | 2024年 / 691卷

关键词：

gravitation; galaxies: clusters: general; cosmological parameters; large-scale structure of Universe; HALO-MASS FUNCTION; LARGE-SCALE STRUCTURE; GALAXY CLUSTERS; COSMOLOGICAL CONSTRAINTS; MODIFIED GRAVITY; GENERAL FRAMEWORK; HUBBLE CONSTANT; DATA RELEASE; CALIBRATION; SAMPLE;

D O I：

10.1051/0004-6361/202449587

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The evolution of the cluster mass function traces the growth of the linear density perturbations and can be utilized to constrain the parameters of cosmological and alternative gravity models. In this context, we present new constraints on potential deviations from general relativity by investigating the Hu-Sawicki parametrization of the f (R) gravity with the first Spectrum Roentgen Gamma (SRG)/eROSITA All-Sky Survey (eRASS1) cluster catalog in the western Galactic hemisphere in combination with the overlapping Dark Energy Survey Year-3, KiloDegree Survey, and Hyper Suprime-Cam data for weak lensing mass calibration. For the first time, we present constraints obtained from cluster abundances only. When we consider massless neutrinos, we find a strict upper limit of log |f(R0)| < -4.31 at a 95% confidence level. Massive neutrinos suppress structure growth at small scales, and thus have the opposite effect of f (R) gravity. We consequently investigate the joint fit of the mass of the neutrinos with the modified gravity parameter. We obtain log |f(R0)| < -4.08 jointly with & sum; m(nu) < 0.49 eV at a 95% confidence level, which is tighter than the limits in the literature utilizing cluster counts only. At log |f(R0)| = -6, the number of clusters is not significantly changed by the theory. Consequently, we do not find any statistical deviation from general relativity in the study of eRASS1 cluster abundance. Deeper surveys with eROSITA, increasing the number of detected clusters, will further improve constraints on log |f(R0)| and investigate alternative gravity theories.

引用

页数：14

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