X ray spectra of X Per

Details X ray spectra of X Per X ray spectra of X Per

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978stin...7834013b&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Cosmic X Rays, Oso-8, Pulsars, Stellar Spectra, X Ray Spectra, Binary Stars, Emission Spectra, Line Spectra, Neutron Stars, X Ray Astronomy

Scientific paper

The cosmic X-ray spectroscopy experiment on OSO-8 observed X Per for twenty days during two observations in Feb. 1976 and Feb. 1977. The spectrum of X Per varies in phase with its 13.9 min period, hardening significantly at X-ray minimum. Unlike other X-ray binary pulsar spectra, X Per's spectra do not exhibit iron line emission or strong absorption features. The data show no evidence for a 22 hour periodicity in the X-ray intensity of X Per. These results indicate that the X-ray emission from X Per may be originating from a neutron star in a low density region far from the optically identified Be star.

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