On the nature of the X-ray pulsar near LYNDS 1457

Abstract

view Abstract Citations (19) References (62) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the Nature of the X-Ray Pulsar near Lynds 1457 Patterson, J. ; Halpern, J. P. Abstract The rotation of a magnetized white dwarf or neutron star accidentally located within or behind the Lynds 1457 molecular cloud, is considered as a model for the hard X-ray source H0253 + 193. It is calculated that all models of this type have a low a priori probability because the positions are so remarkably coincident and because the objects involved are not sufficiently common. A neutron star accreting in a close binary is rejected because its likelihood is extremely small and because the observed position, luminosity, and spectrum of the object are all quite atypical for X-ray binaries. Two other possibilities are considered: (1) an isolated white dwarf or neutron star drifting accidentally into the cloud and accreting sufficient gas to power the X-ray source and (2) a white dwarf accreting in a close binary. Publication: The Astrophysical Journal Pub Date: September 1990 DOI: 10.1086/169180 Bibcode: 1990ApJ...361..173P Keywords: Astronomical Models; Molecular Clouds; Pulsars; X Ray Binaries; Cataclysmic Variables; Magnetic Stars; Neutron Stars; Stellar Rotation; White Dwarf Stars; Astrophysics; NEBULAE: INDIVIDUAL ALPHANUMERIC: L1457 (LYNDS 1457); PULSARS; X-RAYS: BINARIES full text sources ADS | data products SIMBAD (12)