PSR J1756-2251: a new relativistic double neutron star system

Abstract

We report the discovery during the Parkes Multibeam Pulsar Survey of PSR J1756-2251, a 28.5 ms pulsar in a relativistic binary system. Subsequent timing observations showed the pulsar to have an orbital period of 7.67 hrs and an eccentricity of 0.18. They also revealed a significant advance of periastron, 2.585+/-0.002 deg./yr. Assuming this is entirely due to general relativity implies a total system mass (pulsar plus companion) of 2.574+/-0.003 solar mass. This mass and the significant orbital eccentricity suggest that this is a double neutron star system. Measurement of the gravitational redshift, gamma, and an evaluation of the Shapiro delay shape, s, indicate a low companion mass of <1.25 solar mass. The expected coalescence time due to emission of gravitational waves is only ~1.7 Gyr substantially less than a Hubble time. We note an apparent correlation between spin period and eccentricity for normally evolving double neutron star systems.

arXiv commentAccepted by ApJ Letters. 4 published pages, 3 figures and 2 tables

References in corpus (9)

• An increased estimate of the merger rate of double neutron stars from observations of a highly relativistic system
• A Double-Pulsar System - A Rare Laboratory for Relativistic Gravity and Plasma Physics
• The Parkes Multibeam Pulsar Survey: I. Observing and Data Analysis Systems, Discovery and Timing of 100 Pulsars
• The Parkes Multibeam Pulsar Survey -- II. Discovery and Timing of 120 Pulsars
• The Parkes Multibeam Pulsar Survey: V. Finding binary and millisecond pulsars
• The characteristics of millisecond pulsar emission: III.From low to high frequencies
• The Probability Distribution of Binary Pulsar Coalescence Rates. I. Double Neutron Star Systems in the Galactic Field
• Discovery of a Young Radio Pulsar in a Relativistic Binary Orbit
• Timing models for the long-orbital period binary pulsar PSR B1259-63

Cited by in corpus (90)

• The Confrontation between General Relativity and Experiment
• Formation of Double Neutron Star Systems
• Binary and Millisecond Pulsars
• The Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis
• The Confrontation between General Relativity and Experiment
• The Evolution of Compact Binary Star Systems
• Refined Neutron-Star Mass Determinations for Six Eclipsing X-Ray Pulsar Binaries
• The Cooling of Compact Stars
• The basics of gravitational wave theory
• The Neutron Star Mass Distribution
• On the formation history of Galactic double neutron stars
• Pulsar J0453+1559: A Double Neutron Star System with a Large Mass Asymmetry
• Proto-Neutron and Neutron Stars in a Chiral SU(3) Model
• Eight New Millisecond Pulsars in NGC 6440 and NGC 6441
• Pulsar searches and timing with the SKA
• Study of measured pulsar masses and their possible conclusions
• Binary and Millisecond Pulsars
• Gravitational-radiation losses from the pulsar-white-dwarf binary PSR J1141-6545
• Formation of Double Neutron Star systems as implied by observations
• PSR J1756$-$2251: a pulsar with a low-mass neutron star companion
• Neutron Star Kicks in Isolated and Binary Pulsars: Observational Constraints and Implications for Kick Mechanisms
• Implications of PSR J0737-3039B for the Galactic NS-NS Binary Merger Rate
• Constraining population synthesis models via empirical binary compact object merger and supernovae rates
• The Evolution of Compact Binary Star Systems
• A Massive Neutron Star in the Globular Cluster M5
• Population synthesis of radio and gamma-ray millisecond pulsars from the Galactic disk
• Multi-telescope timing of PSR J1518+4904
• Discovery of Three Wide-orbit Binary Pulsars: Implications for Binary Evolution and Equivalence Principles
• Constraining the equation of state of supra-nuclear dense matter from XMM-Newton observations of neutron stars in globular clusters
• The Gravitational waves merger time distribution of binary neutron star systems
• The double pulsar: evidence for neutron star formation without an iron core-collapse supernova
• Populating the Galaxy with pulsars I: stellar & binary evolution
• The binary pulsar PSR J1811-1736: evidence of a low amplitude supernova kick
• Constraints on Natal Kicks in Galactic Double Neutron Star Systems
• PSR J1930-1852: a pulsar in the widest known orbit around another neutron star
• The eccentricity distribution of compact binaries
• Population synthesis of double neutron stars
• The Microscopic Approach to Nuclear Matter and Neutron Star Matter
• Two-body problem with the cosmological constant and observational constraints
• Relativistic Binary Pulsars with Black-Hole Companions
• Approximate Universal Relations among Tidal Parameters for Neutron Star Binaries
• Einstein@Home Discovery of 24 Pulsars in the Parkes Multi-beam Pulsar Survey
• Modelling Double Neutron Stars: Radio and Gravitational Waves
• The superorbital variability and triple nature of the X-ray source 4U 1820-303
• Future prospects for ground-based gravitational wave detectors $-$ The Galactic double neutron star merger rate revisited
• The Formation of the Double Pulsar PSR J0737-3039A/B
• The spin period - eccentricity relation of double neutron stars: evidence for weak supernova kicks?
• Geodetic Precession in PSR J1141-6545
• Constraining population synthesis models via the binary neutron star population
• High-Energy Radiation from Remnants of Neutron Star Binary Mergers
• PSR J1753-2240: A mildly recycled pulsar in an eccentric binary system
• Pulsar Binary Birthrates with Spin-Opening Angle Correlations
• Double and single recycled pulsars: an evolutionary puzzle?
• Delayed X-ray emission from fallback in compact-object mergers
• Timing the Eccentric Binary Millisecond Pulsar in NGC 1851
• A coherent acceleration search of the Parkes multi-beam pulsar survey - techniques and the discovery and timing of 16 pulsars
• Influence of the stiffness of the equation of state and in-medium effects on the cooling of compact stars
• On the Eccentricities and Merger Rates of Double Neutron Star Binaries and the Creation of "Double Supernovae"
• Survival times of supramassive neutron stars resulting from binary neutron star mergers
• The observed neutron star mass distribution as a probe of the supernova explosion mechanism
• Exploiting Orbital Constraints from Optical Data to Detect Binary Gamma-ray Pulsars
• Sources and technology for an atomic gravitational wave interferometric sensor
• The Magnetic Field of the Solar Corona from Pulsar Observations
• The gravitational-wave signal generated by a galactic population of double neutron-star binaries
• On attributes of a Rotating Neutron star with a Hyperon core
• Discovery of 37 new pulsars through GPU-accelerated reprocessing of archival data of the Parkes Multibeam Pulsar Survey
• Cooling of neutron stars in "nuclear medium cooling scenario" with stiff equation of state including hyperons
• Testing Lorentz violation with binary pulsars: constraints on standard model extension
• The MPIfR-MeerKAT Galactic Plane Survey II. The eccentric double neutron star system PSR J1208-5936 and a neutron star merger rate update
• The maximum accreted mass of recycled pulsars
• The FAST Galactic Plane Pulsar Snapshot Survey -- V. PSR J1901+0658 in a double neutron star system
• Modeling Mergers of Known Galactic Systems of Binary Neutron Stars
• Eccentricities of Double Neutron Star Binaries
• The optical companion to the intermediate mass millisecond pulsar J1439-5501 in the Galactic field
• The long and the short of it: modelling double neutron star and collapsar Galactic dynamics
• Neutron star binaries and long duration gamma-ray bursts
• Kinematic constraints on the ages and kick velocities of Galactic neutron star binaries
• New constraints on the Bray conservation-of-momentum natal kick model from multiple distinct observations
• The gravitational wave "probability event horizon" for double neutron star mergers
• Is a soft nuclear equation of state extracted from heavy-ion data incompatible with pulsar data?
• Dense Stellar Matter with Strange Quark Matter Driven by Kaon Condensation
• A post-Keplerian parameter to test gravito-magnetic effects in binary pulsar systems
• Mergers of Binary Compact Objects
• Cooling of neutron stars and hybrid stars with a stiff hadronic EoS
• Astrophysics in 2005
• Thermal X-ray emission identified from the millisecond pulsar PSR J1909-3744
• Infrared observations of the candidate double neutron star system PSR J1811-1736
• The Strange Prospects for Astrophysics
• An optimal envelope ejection efficiency for merging neutron stars
• Forming Double Neutron Stars using Detailed Binary Evolution Models with POSYDON: Comparison to the Galactic Systems