Zobrazeno 1 - 10
of 64 475
pro vyhledávání: '"GALAXY CLUSTERS"'
Autor:
Butt, Minahil Adil, Haridasu, Sandeep, Boumechta, Yacer, Benetti, Francesco, Pizzuti, Lorenzo, Baccigalupi, Carlo, Lapi, Andrea
We present a comprehensive joint analysis of two distinct methodologies for measuring the mass of galaxy clusters: hydrostatic measurements and caustic techniques. We show that by including cluster-specific assumptions obtained from hydrostatic measu
Externí odkaz:
http://arxiv.org/abs/2412.09134
Publikováno v:
976:154 (17pp), 2024 December 1
It is yet to be understood how large-scale environments influence star formation activity in galaxy clusters. One recently proposed mechanism is that galaxy clusters can remain star-forming when fed by infalling groups and star-forming galaxies from
Externí odkaz:
http://arxiv.org/abs/2412.00850
Autor:
Luna, Priscilla Holguin, Burchett, Joseph N., Nagai, Daisuke, Tripp, Todd M., Tejos, Nicolas, Prochaska, J. Xavier
The intracluster medium (ICM) in the far outskirts (r $>$ 2-3 R$_{200}$) of galaxy clusters interfaces with the intergalactic medium (IGM) and is theorized to comprise diffuse, multiphase gas. This medium may hold vital clues to clusters' thermodynam
Externí odkaz:
http://arxiv.org/abs/2411.13551
Galaxies grow and evolve in dark matter halos. Because dark matter is not visible, galaxies' halo masses ($\rm{M}_{\rm{halo}}$) must be inferred indirectly. We present a graph neural network (GNN) model for predicting $\rm{M}_{\rm{halo}}$ from stella
Externí odkaz:
http://arxiv.org/abs/2411.12629
Autor:
Li, Pengfei, Liu, Ang, Kluge, Matthias, Comparat, Johan, Tian, Yong, Júlio, Mariana P., Pawlowski, Marcel S., Sanders, Jeremy, Bulbul, Esra, Schwope, Axel, Ghirardini, Vittorio, Zhang, Xiaoyuan, Bahar, Y. Emre, Ramos-Ceja, Miriam E., Balzer, Fabian, Garrel, Christian
The mass of galaxy clusters is a critical quantity for probing cluster cosmology and testing theories of gravity, but its measurement could be biased given assumptions are inevitable. In this paper, we employ and compare two mass proxies for galaxy c
Externí odkaz:
http://arxiv.org/abs/2411.09735
Autor:
Hong, Sungwook E., Park, Changbom, Mishra, Preetish K., Kim, Juhan, Gibson, Brad K., Kim, Yonghwi, Few, C. Gareth, Pichon, Christophe, Shin, Jihye, Lee, Jaehyun
Publikováno v:
Astrophysical Journal 977, 183 (2024)
We investigate when and how the relations of galaxy morphology and star forming activity with clustercentric radius become evident in galaxy clusters. We identify 162 galaxy clusters with total mass $M_{\rm tot}^{\rm cl} > 5 \times 10^{13} {\rm M}_\o
Externí odkaz:
http://arxiv.org/abs/2411.08255
Autor:
Limousin, Marceau
Parametric strong lensing studies of galaxy clusters often display misleading features: group/cluster scale dark matter components without any stellar counterpart, offsets between both components larger than what might be allowed by neither Cold Dark
Externí odkaz:
http://arxiv.org/abs/2411.03075
Autor:
Tevlin, Larissa, Berlok, Thomas, Pfrommer, Christoph, Talbot, Rosie Y., Whittingham, Joseph, Puchwein, Ewald, Pakmor, Ruediger, Weinberger, Rainer, Springel, Volker
Observations of Faraday rotation and synchrotron emission in galaxy clusters imply large-scale magnetic fields with $\mu\mathrm{G}$ strengths possibly extending back to $z=4$. Non-radiative cosmological simulations of galaxy clusters show a comparabl
Externí odkaz:
http://arxiv.org/abs/2411.00103
Autor:
Eltvedt, Alice M., Shanks, T., Metcalfe, 1 N., Ansarinejad, B., Barrientos, L. F., Murph, D. N. A., Alexander, D. M.
We cross-correlate a low-contamination subset of the VST ATLAS g < 22.5 quasar catalogue with g < 21.5 galaxy clusters, r < 21 galaxies and r < 19.5 Luminous Red Galaxies (LRGs) to probe their halo mass profiles via quasar magnification bias caused b
Externí odkaz:
http://arxiv.org/abs/2410.23341