Variability in the X-ray Warm Absorber in GX 339-4

Details Variability in the X-ray Warm Absorber in GX 339-4 Variability in the X-ray Warm Absorber in GX 339-4

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004atel..221....1m&link_type=abstract

The Astronomer's Telegram, #221

Astronomy and Astrophysics

Astronomy

3

X-Ray, A Comment, Binaries, Black Holes, Transients

Scientific paper

We have previously reported evidence for a Seyfert-like warm absorber in the stellar-mass Galactic black hole GX 339-4, based on a Chandra/HETGS spectrum obtained during a 75 ksec observation during its 2002-2003 outburst starting on 2003 March 17.8 [1]. The ionized absorption lines detected with this observation were strong, but showed little variability on the timescale of the observation. Variability is perhaps the most important property for ascribing X-ray absorption lines to an accreting source, rather than to absorption in the ISM (which is also a possibility for GX 339-4).

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