The environment of GRS 1915+105 as seen with the Chandra HETG and RXTE

Details The environment of GRS 1915+105 as seen with the Chandra HETG and RXTE The environment of GRS 1915+105 as seen with the Chandra HETG and RXTE

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001tysc.confe.164l&link_type=abstract

Two Years of Science with Chandra, Abstracts from the Symposium held in Washington, DC, 5-7 September, 2001, meeting abstract.

Physics

Black Hole And Neutron Star Binaries

Scientific paper

A Chandra AO1 30ks HETGS observation of the micro-quasar GRS 1915+105 reveals neutral K absorption edges from iron, silicon, magnesium, and sulphur, as well as ionized resonance lines from H- and He- like species. We attribute the large column densities derived from the edges to be due to surrounding cold material associated with GRS 1915+105, and the ionized features to orginate in a hotter disk/disk-wind/corona environment. Based on the H- and He-like Fe (XXV, XXVI), we estimate contraints on the ionization parameter, temperature, and hydrogen equivalent number density. Variability will be addressed in the context of simultaneous RXTE and Chandra observations.

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