45 citations · 68 across the 3 of their papers we have counts for
6 papers
Discovery of an X-ray Jet and Extended Jet Structure in the Quasar PKS 1055+201
D. A. Schwartz, H. L. Marshall, J. E. J. Lovell +10
This letter reports rich X-ray jet structures found in the Chandra observation of PKS 1055+201. In addition to an X-ray jet coincident with the radio jet we detect a region of exte…
Observations of Magnetic Fields and Relativistic Beaming in Four Quasar Jets
D. A. Schwartz, H. L. Marshall, J. E. J. Lovell +9
We discuss the physical properties of four quasar jets imaged with the Chandra X-ray Observatory in the course of a survey for X-ray emission from radio jets. These objects have su…
X-Ray Evidence for Multiple Absorbing Structures in Seyfert Nuclei
Jonathan M. Gelbord, Kimberly A. Weaver, Tahir Yaqoob
We have discovered a correlation between the X-ray absorbing column densities within Seyfert galaxies and the relative alignment between the central engines and their host galactic…
The Knotty Question of the Jet of PKS B1421-490
J. M. Gelbord, H. L. Marshall, D. M. Worrall +9
We report the discovery of unusually strong optical and X-ray emission associated with a knot in the radio jet of PKS B1421-490. The knot is the brightest feature observed beyond t…
Continuing a Chandra Survey of Quasar Radio Jets
J. M. Gelbord, H. L. Marshall, D. A. Schwartz +7
We are conducting an X-ray survey of flat spectrum radio quasars (FSRQs) with extended radio structures. We summarize our results from the first stage of our survey, then we presen…
A Chandra Survey of Quasar Jets: First Results
H. L. Marshall, D. A. Schwartz, J. E. J. Lovell +6
We present results from Chandra X-ray imaging and spectroscopy of a flux-limited sample of flat spectrum radio-emitting quasars with jet-like extended structure. Twelve of twenty q…