Accretion Disk Structure in Various Spectral States of GRS 1915+105

Details Accretion Disk Structure in Various Spectral States of GRS 1915+105 Accretion Disk Structure in Various Spectral States of GRS 1915+105

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..593r&link_type=abstract

Chandra Proposal ID #02400917

Physics

Chandra Proposal Id #02400917

Scientific paper

GRS 1915+105 displays 9 types of light curves that fall in 3 categories. In the steady-hard states, the Fe line is strongest, and there is a steady type of jet. In the soft states, the accretion disk dominates the X-ray spectrum, and we often detect the 67 Hz QPO thought to arise from GR effects in the inner disk. The remaining states show a variety of instability oscillations, some producing violent mass ejections. Progress on all fronts requires high resolution spectra to help interpret the disk structure. We have particular interest in the profiles of broad Fe emission, intending to gain physical insights using theoretical models of Nayakshin et al. With monitoring timescales selected to randomize the 9 states, we request 3 obs likely to sample different conditions in the disk.

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