Zobrazeno 1 - 10
of 409
pro vyhledávání: '"Kay, Scott"'
The masses of galaxy clusters are commonly measured from X-ray observations under the assumption of hydrostatic equilibrium (HSE). This technique is known to underestimate the true mass systematically. The fiducial FLAMINGO cosmological hydrodynamica
Externí odkaz:
http://arxiv.org/abs/2409.07849
Autor:
Kay, Scott T., Braspenning, Joey, Chluba, Jens, Helly, John C., Kugel, Roi, Schaller, Matthieu, Schaye, Joop
The relativistic Sunyaev-Zel'dovich (SZ) effect can be used to measure intracluster gas temperatures independently of X-ray spectroscopy. Here, we use the large-volume FLAMINGO simulation suite to determine whether SZ $y$-weighted temperatures lead t
Externí odkaz:
http://arxiv.org/abs/2404.08539
Autor:
Braspenning, Joey, Schaye, Joop, Schaller, Matthieu, McCarthy, Ian G., Kay, Scott T., Helly, John C., Kugel, Roi, Elbers, Willem, Frenk, Carlos S., Kwan, Juliana, Salcido, Jaime, van Daalen, Marcel P., Vandenbroucke, Bert
Galaxy clusters are important probes for both cosmology and galaxy formation physics. We test the cosmological, hydrodynamical FLAMINGO simulations by comparing to observations of the gaseous properties of clusters measured from X-ray observations. F
Externí odkaz:
http://arxiv.org/abs/2312.08277
Autor:
Towler, Imogen, Kay, Scott T., Schaye, Joop, Kugel, Roi, Schaller, Matthieu, Braspenning, Joey, Elbers, Willem, Frenk, Carlos S., Kwan, Juliana, Salcido, Jaime, van Daalen, Marcel P., Vandenbroucke, Bert, Altamura, Edoardo
The splashback radius, coinciding with the minimum in the dark matter radial density gradient, is thought to be a universal definition of the edge of a dark matter halo. Observational methods to detect it have traced the dark matter using weak gravit
Externí odkaz:
http://arxiv.org/abs/2312.05126
Autor:
Kim, Junhan, Sayers, Jack, Sereno, Mauro, Bartalucci, Iacopo, Chappuis, Loris, De Grandi, Sabrina, De Luca, Federico, De Petris, Marco, Donahue, Megan E., Eckert, Dominique, Ettori, Stefano, Gaspari, Massimo, Gastaldello, Fabio, Gavazzi, Raphael, Gavidia, Adriana, Ghizzardi, Simona, Iqbal, Asif, Kay, Scott, Lovisari, Lorenzo, Maughan, Ben J., Mazzotta, Pasquale, Okabe, Nobuhiro, Pointecouteau, Etienne, Pratt, Gabriel W., Rossetti, Mariachiara, Umetsu, Keiichi
Publikováno v:
A&A 686, A97 (2024)
Galaxy clusters are the products of structure formation through myriad physical processes that affect their growth and evolution throughout cosmic history. As a result, the matter distribution within galaxy clusters, or their shape, is influenced by
Externí odkaz:
http://arxiv.org/abs/2307.04794
Galaxy cluster rotation revealed in the MACSIS simulations with the kinetic Sunyaev-Zeldovich effect
The kinetic Sunyaev-Zeldovich (kSZ) effect has now become a clear target for ongoing and future studies of the cosmic microwave background (CMB) and cosmology. Aside from the bulk cluster motion, internal motions also lead to a kSZ signal. In this wo
Externí odkaz:
http://arxiv.org/abs/2302.07936
We use the MACSIS hydrodynamical simulations to estimate the extent of gas clumping in the intracluster medium of massive galaxy clusters and how it affects the hydrostatic mass bias. By comparing the clumping to the azimuthal scatter in the emission
Externí odkaz:
http://arxiv.org/abs/2211.01239
Autor:
Altamura, Edoardo, Kay, Scott T., Bower, Richard G., Schaller, Matthieu, Bahé, Yannick M., Schaye, Joop, Borrow, Josh, Towler, Imogen
Recent high-resolution cosmological hydrodynamic simulations run with a variety of codes systematically predict large amounts of entropy in the intra-cluster medium at low redshift, leading to flat entropy profiles and a suppressed cool-core populati
Externí odkaz:
http://arxiv.org/abs/2210.09978
Autor:
Oppizzi, Filippo, De Luca, Federico, Bourdin, Hervé, Mazzotta, Pasquale, Ettori, Stefano, Gastaldello, Fabio, Kay, Scott, Lovisari, Lorenzo, Maughan, Ben J., Pointecouteau, Etienne, Pratt, Gabriel W., Rossetti, Mariachiara, Sayers, Jack, Sereno, Mauro
Pressure profiles are sensitive probes of the thermodynamic conditions and the internal structure of galaxy clusters. The intra-cluster gas resides in hydrostatic equilibrium within the Dark Matter gravitational potential. However, this equilibrium m
Externí odkaz:
http://arxiv.org/abs/2209.09601
Autor:
Lee, Elizabeth, Anbajagane, Dhayaa, Singh, Priyanka, Chluba, Jens, Nagai, Daisuke, Kay, Scott T., Cui, Weiguang, Dolag, Klaus, Yepes, Gustavo
The Sunyaev-Zeldovich (SZ) effect is a powerful tool in modern cosmology. With future observations promising ever improving SZ measurements, the relativistic corrections to the SZ signals from galaxy groups and clusters are increasingly relevant. As
Externí odkaz:
http://arxiv.org/abs/2207.05834