Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Hallman, Eric J."'
Autor:
Raja, Ramij, Rahaman, Majidul, Datta, Abhirup, Burns, Jack O., Intema, Huib T., van Weeren, R. J., Hallman, Eric J., Rapetti, David, Paul, Surajit
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:
http://arxiv.org/abs/2001.02365
Autor:
Raja, Ramij, Rahaman, Majidul, Datta, Abhirup, Burns, Jack O., Alden, Brian, Intema, H. T., van Weeren, R. J., Hallman, Eric J., Rapetti, David, Paul, Surajit
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:
http://arxiv.org/abs/1912.07853
Publikováno v:
Astronomy and Computing, Volume 27, April 2019, Pages 147-155
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:
http://arxiv.org/abs/1903.08215
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:
http://arxiv.org/abs/1804.06493
The galaxy cluster Abell 3667 is an ideal laboratory to study the plasma processes in the intracluster medium (ICM). High resolution Chandra X-ray observations show a cold front in Abell 3667. At radio wavelengths, Abell 3667 reveals a double radio-r
Externí odkaz:
http://arxiv.org/abs/1408.5123
Autor:
ZuHone, John A., Biffi, Veronica, Hallman, Eric J., Randall, Scott W., Foster, Adam R., Schmid, Christian
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:
http://arxiv.org/abs/1407.1783
Autor:
Skillman, Samuel W., Xu, Hao, Hallman, Eric J., O'Shea, Brian W., Burns, Jack O., Li, Hui, Collins, David C., Norman, Michael L.
Non-thermal radio emission from cosmic ray electrons in the vicinity of merging galaxy clusters is an important tracer of cluster merger activity, and is the result of complex physical processes that involve magnetic fields, particle acceleration, ga
Externí odkaz:
http://arxiv.org/abs/1211.3122
Autor:
Hallman, Eric J., Jeltema, Tesla E.
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
Externí odkaz:
http://arxiv.org/abs/1108.0934
Autor:
Hallman, Eric J., Skillman, Samuel W., Jeltema, Tesla E., Smith, Britton D., O'Shea, Brian W., Burns, Jack O., Norman, Michael L.
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
Externí odkaz:
http://arxiv.org/abs/1010.3260
We perform a series of cosmological simulations using Enzo, an Eulerian adaptive-mesh refinement, N-body + hydrodynamical code, applied to study the warm/hot intergalactic medium. The WHIM may be an important component of the baryons missing observat
Externí odkaz:
http://arxiv.org/abs/1009.0261