High Resolution Chandra observations of microquasar GRS 1915+105

Details High Resolution Chandra observations of microquasar GRS 1915+105 High Resolution Chandra observations of microquasar GRS 1915+105

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.3503l&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #35.03; Bulletin of the American Astronomical Society, Vol. 32, p.1246

Astronomy and Astrophysics

Astronomy

Scientific paper

A Chandra AO1 30ks HETGS observation of the X-ray transient microquasar GRS 1915+105 reveal absorption edges and faint line emission over the HETG energy range. We find from a preliminary analysis evidence for prominent edges at 1.74Å (7.13 keV), 6.74Å (1.83 keV) and 5.04Å (2.46 keV) corresponding to neutral iron, silicon and sulphur. The depth of the Si edge is too strong for that expected from the Galactic absorbing column; it may be consistent with the high inclination of the disk. Features corresponding to Fe XXV, Fe XXVI with tentative evidence for ~ 500-1000 km s-1 blueshifts, and neutral iron are also identified.

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