337 citations · 652 across the 23 of their papers we have counts for
Showing 2007Show all
2 papers · 1 filter
astro-ph2007★ 7 cited
On the nature of the z=0 X-ray absorbers: I. Clues from an external group
Smita Mathur, Gregory R. Sivakoff, Rik J. Williams +1
Absorption lines of OVII at redshift zero are observed in high quality Chandra spectra of extragalactic sightlines. The location of the absorber producing these lines, whether from…
astro-ph2007★ 1 cited
Time-Evolving Photoionization: the Thin and Compact X-Ray Wind of NGC 4051
Fabrizio Nicastro, Yair Krongold, Martin Elvis +3
We discuss the power of time-evolving photoionization as a diagnostic tool to measure the electron density of photoionized gas. We apply this technique to a XMM-Newton observation…