Linking Variability in the Accretion Disk Wind and Radio Jet in the β State of GRS 1915+105

Details Linking Variability in the Accretion Disk Wind and Radio Jet in the β State of GRS 1915+105 Linking Variability in the Accretion Disk Wind and Radio Jet in the β State of GRS 1915+105

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21810705n&link_type=abstract

American Astronomical Society, AAS Meeting #218, #107.05; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We present new results from the Chandra HETGS on the accretion disk wind in the bizarre β state of GRS 1915+105. Renowned for its discrete jet ejections and its implications for the disk-jet connection around accreting black holes, the β state is a 30-minute limit cycle featuring strong and unusual X-ray spectral variability. We report our analysis of two HETGS observations of this state, focusing on the properties of X-ray absorption lines from the accretion disk wind during known intervals of jet formation and accretion disk variability. We find that the wind is prominent throughout the limit cycle, but that it has a lower column density and a higher ionization parameter during the characteristic long, spectrally-hard dip (which may be associated with discrete ejections), and a higher column density and lower ionization parameter during periods of strong disk variability. We discuss these results in the context of rapid physical interactions between the accretion disk wind and the radio jet, and consider implications for similar classes of X-ray variability.

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