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An X-ray emitting black hole in a globular cluster
Thomas J. Maccarone, Gilles Bergond, Arunav Kundu +4
We present optical and X-ray data for the first object showing strong evidence for being a black hole in a globular cluster. We show the initial X-ray light curve and X-ray spectru…
Clues to Globular Cluster Evolution from Multiwavelength Observations of Extragalactic Systems
Arunav Kundu, Thomas J. Maccarone, Stephen E. Zepf
We present a study of the globular cluster (GC) systems of nearby elliptical and S0 galaxies at a variety of wavelengths from the X-ray to the infrared. Our analysis shows that rou…
Compact objects in globular clusters
Thomas J. Maccarone, Christian Knigge
Globular clusters have long been known to contain large excesses of a variety of objects formed through dynamical processes. The past few years have seen a dramatic increase in our…
[OIII] 5007 Emission from the Black-Hole X-ray Binary in a NGC 4472 Globular Cluster
Stephen E. Zepf, Thomas J. Maccarone, Gilles Bergond +3
We present the discovery of [OIII] 5007 emission associated with the black hole X-ray binary recently identified in a globular cluster in the Virgo elliptical galaxy NGC 4472. This…
Parallel tracks in infrared versus X-ray emission in black hole X-ray transient outbursts: a hysteresis effect?
D. M. Russell, T. J. Maccarone, E. G. Koerding +1
We report the discovery of a new hysteresis effect in black hole X-ray binary state transitions, that of the near-infrared (NIR) flux (which most likely originates in the jets) ver…
Near-Infrared Observations of Globular Clusters in NGC 4472, NGC 4594, NGC 3585 and NGC 5813 and Implications for their Ages and Metallicities
Maren Hempel, Steve Zepf, Arunav Kundu +2
We present near-infrared photometry of the globular cluster systems of the early-type galaxies NGC 4472, NGC 4594, NGC 3585, and NGC 5813. We combine these near-infrared data, obta…