X-ray spectra of X Persei

Details X-ray spectra of X Persei X-ray spectra of X Persei

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...227l..21b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 227, Jan. 1, 1979, p. L21-L24.

Other

22

Binary Stars, Pulsars, X Ray Spectra, B Stars, Neutron Stars

Scientific paper

The GSFC cosmic X-ray spectroscopy experiment on OSO 8 observed X Per for 20 days during two observations in 1976 February and 1977 February. The spectrum of X Per varies in phase with its 13.9 minute period, hardening significantly at X-ray minimum. Unlike other X-ray binary pulsar spectra, those of X Per do not exhibit iron line emission or strong absorption features. Our 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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