212 citations · 3.4k across the 78 of their papers we have counts for
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Galactic Globular Clusters with Luminous X-Ray Binaries
Joel N. Bregman
Luminous X-ray binaries (>1E34 erg/s, LMXBs) have a neutron star or black hole primary, and in globular clusters, most of these close binaries are expected to be have evolved from…
OVI in Elliptical Galaxies: Indicators of Cooling Flows
Joel N. Bregman, Eric D. Miller, Alex E. Athey +1
Early-type galaxies often contain a hot X-ray emitting interstellar medium (3-8E6 K) with an apparent radiative cooling time much less than a Hubble time. If unopposed by a heating…
The Cosmological Unimportance of Low Surface Brightness Galaxies
C. C. Hayward, J. A. Irwin, J. N. Bregman
We have searched for Type Ia supernovae (SNe Ia) in the local (d < 60 Mpc) Universe using Northern Sky Variability Survey (NSVS) data collected from the nightly optical surveys of…
XMM-Newton Observation of Diffuse Gas and LMXBs in the Elliptical Galaxy NGC 4649 (M60)
Scott W. Randall, Craig L. Sarazin, Jimmy A. Irwin
(Abridged) We present an XMM-Newton X-ray observation of the X-ray bright E2 elliptical galaxy NGC 4649. In addition to bright diffuse emission, we resolve 158 discrete sources, ~5…
The Birthplace of Low-Mass X-ray Binaries: Field Versus Globular Cluster Populations
Jimmy A. Irwin
Recent Chandra studies of low-mass X-ray binaries (LMXBs) within early-type galaxies have found that LMXBs are commonly located within globular clusters of the galaxies. However, w…
Ultra-luminous X-ray Sources in nearby galaxies from ROSAT HRI observations II. statistical properties
Ji-Feng Liu, Joel N. Bregman, Jimmy Irwin
The statistical properties of the ultra-luminous X-ray source (ULX) populations extracted from the ROSAT HRI survey of X-ray point sources in nearby galaxies in Paper I are studied…