A Shapiro delay detection in the binary system hosting the millisecond pulsar PSR J1910-5959A

Abstract

PSR J1910-5959A is a binary pulsar with a helium white dwarf companion located about 6 arcmin from the center of the globular cluster NGC6752. Based on 12 years of observations at the Parkes radio telescope, the relativistic Shapiro delay has been detected in this system. We obtain a companion mass Mc = 0.180+/-0.018Msun (1sigma) implying that the pulsar mass lies in the range 1.1Msun <= Mp <= 1.5Msun. We compare our results with previous optical determinations of the companion mass, and examine prospects for using this new measurement for calibrating the mass-radius relation for helium white dwarfs and for investigating their evolution in a pulsar binary system. Finally we examine the set of binary systems hosting a millisecond pulsar and a low mass helium white dwarf for which the mass of both stars has been measured. We confirm that the correlation between the companion mass and the orbital period predicted by Tauris & Savonije reproduces the observed values but find that the predicted Mp - Pb correlation over-estimates the neutron star mass by about 0.5Msun in the orbital period range covered by the observations. Moreover, a few systems do not obey the observed Mp - Pb correlation. We discuss these results in the framework of the mechanisms that inhibit the accretion of matter by a neutron star during its evolution in a low-mass X-ray binary.

4 figures, 2 tables, accepted for publication in the Astrophysical Journal

References in corpus (6)

• TEMPO2, a new pulsar timing package. I: Overview
• The relativistic pulsar-white dwarf binary PSR J1738+0333 I. Mass determination and evolutionary history
• The masses of PSR J1911-5958A and its white dwarf companion
• Spin-Down of Radio Millisecond Pulsars at Genesis
• The puzzling properties of the Helium White Dwarf orbiting the millisecond pulsar PSR J1911-5958A in NGC 6752
• Timing of millisecond pulsars in NGC 6752 - II. Proper motions of the pulsars in the cluster outskirts

Cited by in corpus (23)

• The NANOGrav Nine-year Data Set: Mass and Geometric Measurements of Binary Millisecond Pulsars
• GW170817 Falsifies Dark Matter Emulators
• The formation of low-mass helium white dwarfs orbiting pulsars: Evolution of low-mass X-ray binaries below the bifurcation period
• Formation of the Galactic Millisecond Pulsar Triple System PSR J0337+1715 - a Neutron Star with Two Orbiting White Dwarfs
• Eight new millisecond pulsars from the first MeerKAT globular cluster census
• A Metal-Rich Low-Gravity Companion to a Massive Millisecond Pulsar
• Long-term observations of the pulsars in 47 Tucanae. I. A study of four elusive binary systems
• Rotating neutron stars with exotic cores: masses, radii, stability
• PSR J1012+5307: a millisecond pulsar with an extremely low-mass white dwarf companion
• Optical Identification of He White Dwarfs Orbiting Four Millisecond Pulsars in the Globular Cluster 47 Tucanae
• PSR J1641+3627F: a low-mass He white dwarf orbiting a possible high-mass neutron star in the globular cluster M13
• Formation of Millisecond Pulsars with Low-Mass Helium White Dwarf Companions in Very Compact Binaries
• The Nature of Millisecond Pulsars with Helium White Dwarf Companions
• Millisecond radio pulsars with known masses: parameter values and equation of state models
• The Galactic One-Way Shapiro Delay to PSR B1937+21
• The birth mass function of neutron stars
• PSR~J1910$-$5959A: A rare gravitational laboratory for testing white dwarf models
• A long-period pre-ELM system discovered from LAMOST medium-resolution survey
• Neutron star mass in dark matter clumps
• Dynamically Forming Extremely Low-Mass White Dwarf Binaries in Wide Orbits
• Gemini optical observations of binary millisecond-pulsars
• Probing dark matter and dark energy through Gravitational Time Advancement
• Identification and characterization of optical companions to the population of millisecond pulsars in the globular cluster M3