The X-ray spectra of galactic-bulge sources

Details The X-ray spectra of galactic-bulge sources The X-ray spectra of galactic-bulge sources

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.209..271e&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 209, July 15, 1984, p. 271-284. Research supported by t

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11

Astronomical Spectroscopy, Galactic Bulge, Galactic Radiation, X Ray Sources, Astronomical Models, Bremsstrahlung, Compton Effect, H Lines, Spectrum Analysis, X Ray Spectra

Scientific paper

Eight galactic-bulge sources (GBS) are characterized on the basis of X-ray spectra obtained with Experiment C of Ariel V at various times during 1975-1978. The data are presented in graphic and tabular form and discussed in detail. Six GBS are found to be reasonably described by single-thermal-bremsstrahlung or power-law models, with temperatures ranging from 4 to 9.5 keV, spectral indices from 2 to 4, and H column densities from 5 x 10 to the 20th to 1 x 10 to the 23rd/sq cm. Possible explanations for the anomalous nature of the other two GBS are considered: a circumstellar feature in GX17 + 2 and Comptonization in GX9 + 9.

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