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A variable near-infrared counterpart to the neutron-star low-mass X-ray binary 4U 1705-440
Jeroen Homan, David L. Kaplan, Maureen van den Berg +1
We report the discovery of a near-infrared (nIR) counterpart to the persistent neutron-star low-mass X-ray binary 4U 1705-440, at a location consistent with its recently determined…
A Bursting Radio Transient in the Direction of the Galactic Center
Paul S. Ray, Scott D. Hyman, T. Joseph Lazio +4
The radio sky is poorly sampled for rapidly varying transients because of the narrow field-of-view of most imaging radio telescopes at cm and shorter wavelengths. The emergence of…
A Search for the Near-Infrared Counterpart to GCRT J1745-3009
D. L. Kaplan, S. D. Hyman, S. Roy +5
We present an optical/near-infrared search for a counterpart to the perplexing radio transient GCRT J1745-3009, a source located ~1 degree from the Galactic Center. Motivated by so…
Nearby, Thermally Emitting Neutron Stars
D. L. Kaplan
We describe a sample of thermally emitting neutron stars discovered in the ROSAT All-Sky Survey. We discuss the basic observational properties of these objects and conclude that th…
Timing the Nearby Isolated Neutron Star RX J1856.5-3754
M. H. van Kerkwijk, D. L. Kaplan
RX J1856.5-3754 is the X-ray brightest among the nearby isolated neutron stars. Its X-ray spectrum is thermal, and is reproduced remarkably well by a black-body, but its interpreta…
The Rich Mid-Infrared Environments of Two Highly-Obscured X-ray Binaries: Spitzer Observations of IGR J16318-4848 and GX 301-2
Dae-Sik Moon, David Kaplan, William Reach +3
We present the results of Spitzer mid-infrared spectroscopic observations of two highly-obscured massive X-ray binaries: IGR J16318-4848 and GX301-2. Our observations reveal for th…