114 citations · 429 across the 6 of their papers we have counts for
6 papers
On the Origin of TeV Gamma-ray Emission from HESS J1834-087
R. Mukherjee, E. V. Gotthelf, J. P. Halpern
We present an X-ray study of the field containing the extended TeV source HESS J1834-087 using data obtained with the XMM-Newton telescope. Previously, the coincidence of this sour…
The Intrinsically X-ray Weak Quasar PHL 1811. II. Optical and UV Spectra and Analysis
Karen M. Leighly, Jules P. Halpern, Edward B. Jenkins +1
This is the second of two papers reporting observations and analysis of the unusually bright (m_b=14.4), luminous (M_B=-25.5), nearby (z=0.192) narrow-line quasar PHL 1811. The fir…
The Intrinsically X-ray Weak Quasar PHL 1811. I. X-ray Observations and Spectral Energy Distribution
Karen M. Leighly, Jules P. Halpern, Edward B. Jenkins +3
This is the first of two papers reporting observations and analysis of the unusually bright (m_b=14.4), luminous (M_B=-25.5), nearby (z=0.192) narrow-line quasar PHL 1811, focusing…
Discovery of Radio Emission from Transient Anomalous X-ray Pulsar XTE J1810-197
J. P. Halpern, E. V. Gotthelf, R. H. Becker +2
We report the first detection of radio emission from any anomalous X-ray pulsar (AXP). Data from the Very Large Array (VLA) MAGPIS survey with angular resolution 6" reveals a point…
Is the EGRET source 3EG J1621+8203 the radio galaxy NGC 6251?
R. Mukherjee, J. Halpern, N. Mirabal +1
We discuss the nature of the unidentified EGRET source 3EG J1621+8203. In an effort to identify the gamma-ray source, we have examined X-ray images of the field from ROSAT PSPC, RO…
The Host Galaxy of the Gamma--Ray Burst 971214
S. C. Odewahn, S. G. Djorgovski, S. R. Kulkarni +13
We report on Hubble Space Telescope (HST) observations of the host galaxy of GRB 971214, about four months after the burst. The redshift of the proposed host galaxy at z=3.418, com…