Extended X-ray observations of Scorpius X-1 with a Bragg crystal spectrometer

Details Extended X-ray observations of Scorpius X-1 with a Bragg crystal spectrometer Extended X-ray observations of Scorpius X-1 with a Bragg crystal spectrometer

Nov 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...226..276l&link_type=abstract

Astrophysical Journal, Part 1, vol. 226, Nov. 15, 1978, p. 276-281.

Astronomy and Astrophysics

Astronomy

11

Astronomical Spectroscopy, Bragg Angle, Spaceborne Astronomy, X Ray Sources, X Ray Spectra, Bremsstrahlung, Data Processing, Electron Scattering, Emission Spectra, Line Spectra, Oso-8, Plasma Spectra

Scientific paper

Observations covering multiple orbital periods of the X-ray source Sco X-1 were carried out in 1975 and 1976 with the graphite crystal spectrometer aboard OSO 8. Time-averaged continuum spectra are featureless and are reasonably well described in terms of a Comptonized thermal bremsstrahlung spectrum in which kT is about 1.5-2 keV and in which the number of electron scatterings that each photon is assumed to have undergone is of the order of 100. Line limits, typically with equivalent widths of a few electron volts, are established for important emission lines of Si XIII, Si XIV, S XV, S XVI, and Fe XXV as a function of binary phase.

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