activity
19982026
most citedX-ray Spectral Variability and Rapid Variability of the Soft X-ray Spectrum Seyfert 1 Galaxies Ark 564 and Ton S180

426 citations · 3k across the 83 of their papers we have counts for

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Showing 2013Show all

7 papers · 1 filter

astro-ph.HE2013★ 58 cited

A Census of X-ray gas in NGC 1068: Results from 450ks of Chandra HETG Observation

T. Kallman, D. A. Evans, H. Marshall +4

We present models for the X-ray spectrum of the Seyfert 2 galaxy NGC 1068. These are fitted to data obtained using the High Energy Transmission Grating (HETG) on the Chandra X-ray…

astro-ph.IM2013★ 14 cited

Progress toward a Soft X-ray Polarimeter

Herman L. Marshall, Norbert S. Schulz, Brian Remlinger +3

We are developing instrumentation for a telescope design capable of measuring linear X-ray polarization over a broad-band using conventional spectroscopic optics. Multilayer-coated…

astro-ph.HE2013★ 66 cited

Multiwavelength Observations of the SS 433 Jets

Herman L. Marshall, Claude R. Canizares, Todd Hillwig +5

We present observations of the SS 433 jets using the Chandra High Energy Transmission Grating Spectrometer with contemporaneous optical and VLBA observations. The X-ray and optical…

astro-ph.CO2013★ 59 cited

Polarimetry and the High-Energy Emission Mechanisms in Quasar Jets. The Case of PKS 1136-135

Mihai Cara, Eric S. Perlman, Yasunobu Uchiyama +11

Since the discovery of kiloparsec-scale X-ray emission from quasar jets, the physical processes responsible for their high-energy emission have been poorly defined. A number of mec…

astro-ph.HE2013★ 6 cited

White Paper for Blazar Observations with a GEMS-like X-ray Polarimetry Mission

Henric Krawczynski, Lorella Angelini, Matthew Baring +27

In this document, we describe the scientific potential of blazar observations with a X-ray polarimetry mission like GEMS (Gravity and Extreme Magnetism SMEX). We describe five blaz…

astro-ph.HE2013★ 6 cited

White Paper on GEMS Study of Polarized X-rays from Neutron Stars

Pranab Ghosh, Lorella Angelini, Matthew Baring +27

We examine the expected X-ray polarization properties of neutron-star X-ray sources of various types, e.g., accretion and rotation powered pulsars, magnetars, and low-mass X-ray bi…