212 citations · 3.4k across the 78 of their papers we have counts for
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The Search for Million Degree Gas Through The NVII Hyperfine Line
Joel N. Bregman, Jimmy A. Irwin
Gas in the million degree range occurs in a variety of astronomical environments, and it may be the main component of the elusive missing baryons at low redshift. The NVII ion is f…
The Remarkable Stability of Probable Black Hole Low-Mass X-ray Binaries in Nearby Galaxies
Jimmy A. Irwin
The most luminous X-ray sources in nearby elliptical galaxies are likely black hole low-mass X-ray binaries (BHLMXBs). In the Milky Way, such systems are always transient, and with…
The Size of the Cooling Region of Hot Gas in Two Elliptical Galaxies
Joel N. Bregman, Birgit Otte, Eric D. Miller +1
Some early-type galaxies show OVI emission, a tracer of gas at 10^5.5 K, and a predicted product of gas cooling from the X-ray emitting temperatures. We studied the spatial extent…
OVI Observations of Galaxy Clusters: Evidence for Modest Cooling Flows
Joel N. Bregman, A. C. Fabian, Eric D. Miller +1
A prediction of the galaxy cluster cooling flow model is that as gas cools from the ambient cluster temperature, emission lines are produced in gas at subsequently decreasing tempe…
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…