Gravitationally redshifted gamma rays and neutron star masses

Abstract

view Abstract Citations (3) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Gravitationally redshifted gamma rays and neutron star masses. Bowers, R. L. Abstract Gravitationally redshifted gamma-ray lines emitted from the surface of pulsars and compact X-ray sources are discussed as constraints on neutron-star masses. A recent tentatively identified line at 400 (+ or -1) keV in the direction of the Crab Nebula, presumably due to positron annihilation on the pulsar surface, gives a mass in the range from 1.3 to 1.94 solar masses for a wide range of recent equations of state. The possibility of further restricting this range using gamma-ray spectroscopy of compact X-ray sources in close binary systems is suggested, and its possible importance in eliminating some models of neutron stars is discussed. Publication: The Astrophysical Journal Pub Date: September 1977 DOI: 10.1086/182510 Bibcode: 1977ApJ...216L..63B Keywords: Gamma Rays; Gravitational Effects; Neutron Stars; Pulsars; Red Shift; Stellar Mass; Binary Stars; Crab Nebula; Equations Of State; Line Spectra; Stellar Models; X Ray Sources; Astrophysics full text sources ADS | data products SIMBAD (5)