The Einstein objective grating spectrometer survey of galactic binary X-ray sources

Details The Einstein objective grating spectrometer survey of galactic binary X-ray sources The Einstein objective grating spectrometer survey of galactic binary X-ray sources

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apjs...76.1127v&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 76, Aug. 1991, p. 1127-1167.

Astronomy and Astrophysics

Astrophysics

58

Gratings (Spectra), Heao 2, Proportional Counters, X Ray Binaries, X Ray Spectroscopy, High Resolution, Spectral Resolution, X Ray Spectra

Scientific paper

The results of observations of 22 bright Galactic X-ray point sources are presented, and the most reliable measurements to date of X-ray column densities to these sources are derived. The results are consistent with the idea that some of the objects have a component of column density intrinsic to the source in addition to an interstellar component. The K-edge absorption due to oxygen is clearly detected in 10 of the sources and the Fe L and Ne K edges are detected in a few. The spectra probably reflect emission originating in a collisionally excited region combined with emission from a photoionized region excited directly by the central source.

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