Neutron Star Mass Measurements. I. Radio Pulsars

Abstract

There are now about fifty known radio pulsars in binary systems, including at least five in double neutron star binaries. In some cases, the stellar masses can be directly determined from measurements of relativistic orbital effects. In others, only an indirect or statistical estimate of the masses is possible. We review the general problem of mass measurement in radio pulsar binaries, and critically discuss all current estimates of the masses of radio pulsars and their companions. We find that significant constraints exist on the masses of twenty-one radio pulsars, and on five neutron star companions of radio pulsars. All the measurements are consistent with a remarkably narrow underlying gaussian mass distribution, m = 1.35 +- 0.04 solar masses. There is no evidence that extensive mass accretion (delta m >~ 0.1 solar mass) has occurred in these systems. We also show that the observed inclinations of millisecond pulsar binaries are consistent with a random distribution, and thus find no evidence for either alignment or counteralignment of millisecond pulsar magnetic fields.

35 pages, 5 figures, submitted to the Astrophys. J. Also available at http://pulsar.princeton.edu/pulsar/publications.shtml

References in corpus (2)

• Neutron Star Mass Measurements. I. Radio Pulsars
• Measurement of Relativistic Orbital Decay in the PSR B1534+12 Binary System

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• PSR J1227$-$6208 and its massive white dwarf companion: pulsar emission analysis, timing update and mass measurements
• Applications of the Octet Baryon Quark-Meson Coupling Model to Hybrid Stars
• The gravitational wave signal of the short rise fling of galactic run away pulsars
• SN 2024iss: A Double-peaked Type IIb Supernova with Evidence of Circumstellar Interaction
• Phase Structure of Compact Star in Modified Quark-Meson Coupling Model
• Cosmic Radioactivity and Galactic Chemical Evolution
• "Industrial-Scale" Black Hole Selection without a Satellite
• Radio pulse search from Aql X-1
• Bragg diffraction and the Iron crust of cold Neutron Stars
• On Pulsar-Driven Mass Ejection in Low-Mass X-ray Binaries
• Probing fundamental physics with pulsars
• Searching for gravitational waves emitted by binaries with spinning components
• Pulsars: Cosmic Permanent 'Neutromagnets'?
• Maximum mass limit of strange stars in quadratic curvature-matter coupled gravity
• Mixed Phase in Compact Starts : M-R relations and radial oscillations
• Nonperturbative Quantum Field Theory in Astrophysics
• Impact of accretion on the statistics of neutron star masses