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Discovery of the radio and X-ray counterpart of TeV Gamma-ray source HESS J1731-347
W. W. Tian, D. A. Leahy, M. Haverkorn +1
We discover a faint shell-type radio and X-ray source, G353.6-0.7, associated with HESS J1731-347. G353.6-0.7 is likely an old supernova remnant (SNR), based on radio (0.8 GHz, 1.4…
The Distances of SNR W41 and overlapping HII regions
Denis A. Leahy, Wenwu Tian
New HI images from the VLA Galactic Plane Survey show prominent absorption features associated with the supernovae remnant G23.3-0.3 (SNR W41). We highlight the HI absorption spect…
Stellar Wind Accretion in GX301-2: Evidence for a High-density Stream
D. A. Leahy, M. Kostka
The X-ray binary system GX301-2 consists of a neutron star in an eccentric orbit accreting from the massive early-type star WRAY 977. It has previously been shown that the X-ray or…
The Distance and Age of the SNR Kes 73 and AXP 1E 1841-045
Wenwu Tian, Denis A. Leahy
We provide a new distance estimate to the supernova remnant (SNR) Kes 73 and its associated anomalous X-ray pulsar (AXP) 1E 1841-045. 21 cm HI images and HI absorption/ emission sp…
An Analysis of the Broadband (22-3900 MHz) Radio Spectrum of HB3 (G132.7+1.3): The Detection of Thermal Radio Emission from an Evolved Supernova Remnant?
D. Urosevic, T. Pannuti, D. Leahy
We present an analysis of the broadband radio spectrum (from 22 to 3900 MHz) of the Galactic supernova remnant (SNR) HB3 (G132.7+1.3). Published observations have revealed that a c…
Phase Dependent Spectral Variability of 4U1907+09
Mallory S. E. Roberts, Peter F. Michelson, Denis A. Leahy +4
We report on ASCA, RXTE, and archival observations of the high mass X-ray binary pulsar 4U1907+09. Spectral measurements of the absorption and flux were made at all phases of the X…