Abstract
view Abstract Citations (94) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Low-luminosity accretion onto magnetized neutron stars Langer, S. H. ; Rappaport, S. Abstract The behavior of matter accreting at low rates (M is less than 10 to the 16th g/s) onto the polar caps of a highly magnetized (B = 10 to the 12th G) neutron star is investigated. Flow solutions are found for the case in which the matter undergoes a stationary collisionless shock. It is found that the cyclotron emission is the dominant energy loss mechanism and can yield continuum spectra resembling those observed from X-ray pulsars. A number of relations among the accretion rate, the surface magnetic field, the shock height, and the characteristic electron and ion temperatures are obtained. For magnetic fields greater than 10 to the 12th G, typical values of KTe are several times the cyclotron energy at the surface of the neutron star. When the field drops below 10 to the 12th G, the electrons become very hot and emit gamma-rays. Publication: The Astrophysical Journal Pub Date: June 1982 DOI: 10.1086/160028 Bibcode: 1982ApJ...257..733L Keywords: Binary Stars; Computational Fluid Dynamics; Magnetic Stars; Neutron Stars; Stellar Luminosity; Stellar Mass Accretion; Cyclotron Radiation; Electron Energy; Ion Temperature; Pulsars; Stellar Magnetic Fields; Stellar Models; Stellar Radiation; X Ray Astronomy; Astrophysics full text sources ADS |
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