X-ray quasar spectra (Schartel+ 1996)

Details X-ray quasar spectra (Schartel+ 1996) X-ray quasar spectra (Schartel+ 1996)

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..33070033s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/307/33. Originally published in: 1996A&A...307...33S

Other

Qsos, X-Ray Sources

Scientific paper

The analysis of the X-ray spectra of a sample of 102 X-ray bright quasars observed with ROSAT during the all-sky survey confirmed for the soft (0.1-2.4)keV energy range that the power law photon indices of radio-loud and radio-quiet quasars differ significantly from each other: <{GAMMA}>rl=2.23+/-0.07 <{GAMMA}>rq=2.54+/-0.04. These mean indices are found to be significantly steeper than those determined for the harder (0.3-3.5)keV energy band of the Einstein Observatory/IPC and the medium energy (2-10...20)keV bands of the EXOSAT/ME and Ginga/LAC experiments for identical subsets of quasars. The comparison yielded a tendency of the harder the energy range covered by the experiment the flatter the average spectral indices. (3 data files).

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