ROSAT observations of the binary Be-star and radio pulsar PSR1259-63

Astronomy and Astrophysics – Astronomy

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B Stars, Binary Stars, Emission Spectra, Neutron Stars, Pulsars, Rosat Mission, X Ray Astronomy, X Ray Sources, Eclipses, Statistical Analysis, Stellar Evolution, Stellar Magnetospheres

Scientific paper

This report discusses the ROSAT guest investigator program for the project 'ROSAT Observations of the Binary Be-star/Radio Pulsar PSR1259-63'. Work was done on this, and a previous grant entitled ROSAT Observations of MXB 1659-29 and EXO 0748-676 during this reporting period. A theory paper was written which proposes a new model to explain the X-ray emission from PSR 1259-63, in which the effects of accretion onto the magnetosphere of the neutron star, rather than onto the light cylinder which is conventionally assumed, is calculated. This approach works well to explain the apastron observations noted earlier. A statistical analysis of the eclipses from EXO0748-676 is also described.

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