Intermittent stellar wind accretion and the long-term activity of Population I binary systems containing an X-ray pulsar

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Long Term Effects, Pulsars, Stellar Activity, Stellar Mass Accretion, Stellar Winds, X Ray Binaries, B Stars, O Stars, Orbital Elements, Stellar Magnetic Fields, Stellar Models, Stellar Rotation

Scientific paper

The full range of possible regimes for a magnetized neutron star that interacts with the stellar wind of an OB star is investigated, and the results are compared with observational data. The observed properties and system parameters for all the currently known OB stars systems are summarized, and a search for a correlation between pulse periods, orbital periods, and X-ray luminosities is made. Four different regimes where a magnetized neutron star can interact with the stellar wind are identified, and the regime where centrifugal inhibition of accretion becomes important is discussed in the context of a strong correlation found between the maximum observed luminosity from a pulsar and its pulse frequency.

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