The X-ray spectrum of QSO 0241+622

Details The X-ray spectrum of QSO 0241+622 The X-ray spectrum of QSO 0241+622

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980stin...8028289w&link_type=abstract

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Computer Science

Energy Spectra, Oso-8, Quasars, X Ray Sources, X Ray Spectra, Background Radiation, Bremsstrahlung, Brightness, Compton Effect, Heao 1, Proportional Counters

Scientific paper

Proportional counters on the OsO-8 spacecraft measured the X-ray spectrum of QSR 0241+622 in the range 2-50 keV. The best power law fit has a proton spectral index and 90 percent errors gamma = 1.93 (+0.5, -0.3) and low energy absorption consistent with reported gas column densities, but a thermal bremsstrahlung form with temperature 13.1 keV cannot be excluded. No indication of spectral variability is found in three observations of the source with HEAO-A2, although a possible 15-30 percent intensity change over a period of 6 months was observed. The quasar is similar to 3C 273 in the proportion of energy emitted in various bands, excluding the radio, if reported radiation above 50 keV from its direction is indeed associated with QSO 0241+622. The two quasars are compared and possible energy generation scenarios are discussed. Implications concerning quasar contributions to the diffuse background are discussed.

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