Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Eric J. Hallman"'
Autor:
David Rapetti, Abhirup Datta, Hubertus Intema, Ramij Raja, Majidul Rahaman, Surajit Paul, Eric J. Hallman, Jack O. Burns, R. J. van Weeren
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 493(1), L28-L32
The advent of sensitive low frequency radio observations has revealed a number of diffuse radio objects with peculiar properties that are challenging our understanding about the physics of the intracluster medium. Here, we report the discovery of a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf988f045f9d74145a3e3257f5b6e101
http://arxiv.org/abs/2001.02365
http://arxiv.org/abs/2001.02365
ClusterPyXT is a new software pipeline to generate spectral temperature, X-ray surface brightness, pressure, and density maps from X-ray observations of galaxy clusters. These data products help elucidate the physics of processes occurring within clu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e816a21d45b549724c2991bc6eec2645
http://arxiv.org/abs/1903.08215
http://arxiv.org/abs/1903.08215
Autor:
Brian Alden, David Rapetti, Eric J. Hallman, Surajit Paul, Majidul Rahaman, R. J. van Weeren, Ramij Raja, Abhirup Datta, Jack O. Burns, Huib Intema
Publikováno v:
The Astrophysical Journal, 889(2), 128
Cool core galaxy clusters are considered to be dynamically relaxed clusters with regular morphology and highly X-ray luminous central region. However, cool core clusters can also be sites for merging events that exhibit cold fronts in X-ray and mini-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::515d12c429d0011257cf4f08f45f2b98
We present results from an X-ray and radio study of the merging galaxy cluster Abell 115. We use the full set of 5 Chandra observations taken of A115 to date (360 ks total integration) to construct high-fidelity temperature and surface brightness map
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c2ded90c5c298ee1cb51fd9c05ca047
http://arxiv.org/abs/1804.06493
http://arxiv.org/abs/1804.06493
Autor:
Tesla E. Jeltema, Eric J. Hallman
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 418:2467-2480
We track the histories of massive clusters of galaxies formed within a cosmological hydrodynamic simulation. Specifically, we track the time evolution of the energy in random bulk motions of the intracluster medium and X-ray measures of cluster struc
Autor:
Tesla E. Jeltema, Jack O. Burns, Michael L. Norman, Samuel W. Skillman, Brian W. O'Shea, Eric J. Hallman, Britton D. Smith
Publikováno v:
The Astrophysical Journal. 725:1053-1068
We examine the incidence of cold fronts in a large sample of galaxy clusters extracted from a (512h^-1 Mpc) hydrodynamic/N-body cosmological simulation with adiabatic gas physics computed with the Enzo adaptive mesh refinement code. This simulation c
Publikováno v:
The Astrophysical Journal. 689:1063-1077
We present new results characterizing cosmological shocks within adaptive mesh refinement N-Body/hydrodynamic simulations that are used to predict non-thermal components of large-scale structure. This represents the first study of shocks using adapti
Autor:
Brian W. O'Shea, Robert P. Harkness, Michael L. Norman, Jack O. Burns, Rick Wagner, Eric J. Hallman
Publikováno v:
The Astrophysical Journal. 671:27-39
We present the first results from a new generation of simulated large sky coverage (~100 square degrees) Sunyaev-Zeldovich effect (SZE) cluster surveys using the cosmological adaptive mesh refinement N-body/hydro code Enzo. We have simulated a very l
Publikováno v:
Journal of The Korean Astronomical Society. 37:593-596
We introduce a method of identifying evidence of shocks in the X-ray emitting gas in clusters of galaxies. Using information from synthetic observations of simulated clusters, we do a blind search of the synthetic image plane. The locations of likely
Autor:
Scott W. Randall, Veronica Biffi, Adam R. Foster, Eric J. Hallman, John ZuHone, Christian Schmid
X-ray astronomy is an important tool in the astrophysicist's toolkit to investigate high-energy astrophysical phenomena. Theoretical numerical simulations of astrophysical sources are fully three-dimensional representations of physical quantities suc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81b17d919e772622384bc57238858eb6
http://arxiv.org/abs/1407.1783
http://arxiv.org/abs/1407.1783