Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.4403n&link_type=abstract
American Astronomical Society, HEAD meeting #11, #44.03; Bulletin of the American Astronomical Society, Vol. 41, p.735
Astronomy and Astrophysics
Astronomy
Scientific paper
Approaching the 14th anniversary of the first observations of GRS 1915+105 with RXTE, we present new results from a joint RXTE/Chandra study of the remarkable X-ray spectral variability of this enigmatic microquasar. For the first time, we are able to show that changes in the broadband X-ray spectrum (RXTE) on timescales of seconds are associated with changes in absorption lines (Chandra HETGS) from the accretion disk wind, leading to new insights about accretion and ejection around the black hole. We will play a real-time movie of our X-ray data showing the black hole attempting and failing to launch a jet, driving a wind from the accretion disk, and finally ejecting the entire inner accretion flow into the corona, all in a bizarre cycle that repeats for days but lasts fewer than 60 seconds. We use these phenomena to probe the ionizing influence of the inner accretion flow on the environment of the black hole.
Lee Jae-Chul
Neilsen Joseph
Remillard Ron
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