Super-critical accretion in CIR X-1

Details Super-critical accretion in CIR X-1 Super-critical accretion in CIR X-1

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..109i&link_type=abstract

In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 1: X Ray Binaries p 109-112 (SEE N90-25711 19-89)

Astronomy and Astrophysics

Astronomy

5

Neutron Stars, Photosphere, Stellar Mass Accretion, Stellar Spectra, X Ray Stars, Eddington Approximation, Mass Transfer, Radio Bursts, Stellar Activity, Stellar Flares

Scientific paper

In the outburst, the X-ray flux from Cir X-1 often exceeds the peak flux of the one X-ray burst which showed photospheric expansion. The peak flux of such bursts is believed to correspond to the Eddington limit. The apparent super-Eddington flux, the radio flaring, the heavy and partial X-ray absorption, the ultrasoft spectrum and the spectral softening with the flux are qualitatively interpreted. The observations are supposed to be due to the large mass-transfer, exceeding the critical accretion rate, which occurs at the periastron passage of a neutron star in a highly eccentric binary system.

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