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

collaborators

87 papers

astro-ph.HE2026

The Evolution of the ACIS Contamination Layer on the Chandra X-ray Observatory from 2010 to 2026

Paul P. Plucinsky, Peter W. Ratzlaff, Akos Bogdan +1

The Chandra X-ray Observatory (CXO) was launched over 27 years ago and has been delivering spectacular science over the course of its mission. The Advanced CCD Imaging Spectrometer…

astro-ph.HE2026

Science of High Resolution X-ray Imaging

H. L. Marshall, K. Weaver, M. Schattenburg +34

This report summarizes potential studies of the Hi-ReX Science Analysis Group for an Ultra-High Angular Resolution X-ray Observatory. Many potential science cases are presented, sp…

astro-ph.HE2023★ 56 cited

Vela pulsar wind nebula x-rays are polarized to near the synchrotron limit

Fei Xie, Alessandro Di Marco, Fabio La Monaca +90

Pulsar wind nebulae are formed when outflows of relativistic electrons and positrons hit the surrounding supernova remnant or interstellar medium at a shock front. The Vela pulsar…

astro-ph.HE2023★ 41 cited

The IXPE view of GRB 221009A

Michela Negro, Niccoló Di Lalla, Nicola Omodei +108

We present the IXPE observation of GRB 221009A which includes upper limits on the linear polarization degree of both prompt and afterglow emission in the soft X-ray energy band. GR…

astro-ph.HE2022★ 173 cited

Polarized x-rays constrain the disk-jet geometry in the black hole x-ray binary Cygnus X-1

Henric Krawczynski, Fabio Muleri, Michal Dovčiak +111

A black hole x-ray binary (XRB) system forms when gas is stripped from a normal star and accretes onto a black hole, which heats the gas sufficiently to emit x-rays. We report a po…

astro-ph.HE2022★ 73 cited

Determination of X-ray pulsar geometry with IXPE polarimetry

Victor Doroshenko, Juri Poutanen, Sergey S. Tsygankov +91

Using observations of X-ray pulsar Her X-1 by the Imaging X-ray Polarimetry Explorer, we report on a highly significant () detection of the polarization signal from an accret…