227 citations · 509 across the 13 of their papers we have counts for
6 papers · 1 filter
A Survey for Supernovae in Massive High-Redshift Clusters
Keren Sharon, A. Gal-Yam, D. Maoz +12
We describe our ongoing program designed to measure the SN-Ia rate in a sample of massive z=0.5-0.9 galaxy clusters. The SN-Ia rate is a poorly known observable, especially at high…
X-ray thermal coronae of galaxies in hot clusters -- ubiquity of embedded mini cooling cores
M. Sun, C. Jones, W. Forman +3
We present a systematic investigation of X-ray thermal coronae in 157 early-type galaxies and 22 late-type galaxies from a survey of 25 hot (kT>3 keV), nearby (z<0.05) clusters, ba…
An X-ray Galaxy Cluster Survey for Investigations of Dark Energy
Z. Haiman, S. Allen, N. Bahcall +34
The amount and nature of dark energy (DE) can be tightly constrained by measuring the spatial correlation features and evolution of a sample of ~ 100,000 galaxy clusters over the r…
Cooling and Clusters: When Is Heating Needed?
Greg L. Bryan, G. Mark Voit
There are (at least) two unsolved problems concerning the current state of the thermal gas in clusters of galaxies. The first is identifying the source of the heating which offsets…
Discovery of Ghost Cavities in Abell 2597's X-ray Atmosphere
B. R. McNamara, M. W. Wise, P. E. J. Nulsen +10
A Chandra image of the central 100 kpc of the Abell 2597 cluster of galaxies shows bright, irregular, X-ray emission within the central dominant cluster galaxy (CDG), and two low s…
Thomson Thick X-ray Absorption in a Broad Absorption Line Quasar PG0946+301
S. Mathur, P. J. Green, N. Arav +14
We present a deep ASCA observation of a Broad Absorption Line Quasar (BALQSO) PG0946+301. The source was clearly detected in one of the gas imaging spectrometers, but not in any ot…