Relativistic emission-line or warm absorber in GRS 1915+105

Details Relativistic emission-line or warm absorber in GRS 1915+105 Relativistic emission-line or warm absorber in GRS 1915+105

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.1924m&link_type=abstract

Chandra Proposal ID #07400086

Physics

Chandra Proposal Id #07400086

Scientific paper

A short observation of the black-hole binary and jet source GRS 1915+105 with XMM-Newton shows evidence of a relativistic broad line at ~7 keV, but the same line is significantly absent in a second observation with the source in the same spectral state (temperature and radius of the accretion disk). During both observations GRS 1915+105 is relatively steady. A photoionized absorber, similar to the one observed with Chandra (Lee et al. 2002), fits both observations (Mendez et al. 2005). We propose to observe GRS 1915+105 with the HETGS/CC-mode 3 times 20 ks in AO7. Given the source long-term variability, these observations will most likely sample more than one spectral state; we will address the reality of the broad line in view of the presence of photoionized plasma in absorption.

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