A Massive Pulsar in a Compact Relativistic Binary

  title={A Massive Pulsar in a Compact Relativistic Binary},
  author={John Antoniadis and Paulo C. C. Freire and Norbert Wex and Thomas M. Tauris and Ryan S. Lynch and Marten H. van Kerkwijk and Michael Kramer and C. G. Bassa and Vik S. Dhillon and Thomas Driebe and Jason W. T. Hessels and Victoria M. Kaspi and Vladislav I. Kondratiev and Norbert Langer and Thomas R. Marsh and Maura Mclaughlin and Timothy T. Pennucci and Scott M. Ransom and Ingrid H. Stairs and Joeri van Leeuwen and Joris P W Verbiest and David G. Whelan},
Introduction Neutron stars with masses above 1.8 solar masses (M☉), possess extreme gravitational fields, which may give rise to phenomena outside general relativity. These strong-field deviations lack experimental confrontation, because they become observable only in tight binaries containing a high-mass pulsar and where orbital decay resulting from emission of gravitational waves can be tested. Understanding the origin of such a system would also help to answer fundamental questions of close… 

Super-Massive Neutron Stars and Compact Binary Millisecond Pulsars

  • M. Linares
  • Physics
    Proceedings of Multifrequency Behaviour of High Energy Cosmic Sources - XIII — PoS(MULTIF2019)
  • 2020
The maximum mass of a neutron star has important implications across multiple research fields, including astrophysics, nuclear physics and gravitational wave astronomy. Compact binary millisecond

Binary neutron star mergers in the gravitational wave era

After the first direct observations of gravitational waves generated by the coalescence of binary black hole systems, expectations about the possibility to reveal binary neutron star systems are

Probing massive scalar and vector fields with binary pulsars

Precision tests of general relativity can be conducted by observing binary pulsars. Theories with massive fields exist to explain a variety of phenomena from dark energy to the strong CP problem.

Relativistic rapidly differentially rotating hot neutron stars

Neutron stars are among the most extreme objects in the universe. They are compact stars born as the aftermath of a core-collapse supernova explosion, at the endpoint of stellar evolution, with a

An eccentric binary millisecond pulsar with a helium white dwarf companion in the Galactic Field

Low-mass white dwarfs (LMWDs) are believed to be exclusive products of binary evolution, as the universe is not old enough to produce them from single stars. Because of the strong tidal forces

Gravitational Radiation from Compact Binary Pulsars

An outstanding question in modern Physics is whether general relativity (GR) is a complete description of gravity among bodies at macroscopic scales. Currently, the best experiments supporting this

A very massive neutron star: relativistic Shapiro delay measurements of PSR J0740+6620

Despite its importance to our understanding of physics at supranuclear densities, the equation of state (EoS) of matter deep within neutron stars remains poorly understood. Millisecond pulsars (MSPs)

Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar

Despite its importance to our understanding of physics at supranuclear densities, the equation of state (EoS) of matter deep within neutron stars remains poorly understood. Millisecond pulsars (MSPs)

Low mass binary neutron star mergers : gravitational waves and neutrino emission

Neutron star mergers are among the most promising sources of gravitational waves for advanced ground-based detectors. These mergers are also expected to power bright electromagnetic signals, in the

Pulsar J0453+1559, the 10th double neutron star system in the universe

Pulsars are neutron stars that spin rapidly, are highly magnetized, and they emit beams of electromagnetic radiation like a lighthouse out in space. These beams of radiation are only observed when



A two-solar-mass neutron star measured using Shapiro delay

Radio timing observations of the binary millisecond pulsar J1614-2230 that show a strong Shapiro delay signature are presented and the pulsar mass is calculated to be (1.97 ± 0.04)M⊙, which rules out almost all currently proposed hyperon or boson condensate equations of state.

Pulsar timing and relativistic gravity

  • J. Taylor
  • Physics
    Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences
  • 1992
In addition to being fascinating objects to study in their own right, pulsars are exquisite tools for probing a variety of issues in basic physics. Recycled pulsars, thought to have been spun up in

Strong-field tests of relativistic gravity and binary pulsars.

  • DamourTaylor
  • Physics
    Physical review. D, Particles and fields
  • 1992
A detailed account of the parametrized post-Keplerian'' (PPK) formalism, a general phenomenological framework designed to extract the maximum possible information from pulsar timing and pulse-structure data, and how it can be combined with the predictions of a rather generic class of tensor biscalar theories to bring together tests based on observations of several different pulsars.


The recent measurement of the Shapiro delay in the radio pulsar PSR J1614−2230 yielded a mass of 1.97 ± 0.04 M☉, making it the most massive pulsar known to date. Its mass is high enough that, even

Studies of the Relativistic Binary Pulsar PSR B1534+12. I. Timing Analysis

We have continued our long-term study of the double neutron star binary pulsar PSR B1534+12, using new instrumentation to make very high precision measurements at the Arecibo Observatory. We have

Formation of Millisecond Pulsars with Heavy White Dwarf Companions: Extreme Mass Transfer on Subthermal Timescales

These systems provide a new formation channel for binary millisecond pulsars with heavy CO white dwarfs and relatively short orbital periods and are concluded that to produce a binary pulsar with a O-Ne-Mg white dwarf or Porb approximately 1 day the above scenario does not work, and a spiral-in phase is still considered the most plausible scenario for the formation of such a system.

Tests of General Relativity from Timing the Double Pulsar

By measuring relativistic corrections to the Keplerian description of the orbital motion, it is found that the “post-Keplerian” parameter s agrees with the value predicted by general relativity within an uncertainty of 0.05%, the most precise test yet obtained.

Collapse of Neutron Stars to Black Holes in Binary Systems: A Model for Short Gamma-Ray Bursts

The accretion of ≈0.1-1 M☉ of material by a neutron star through Roche lobe overflow of its companion or through white dwarf-neutron star coalescence in a low-mass binary system could be enough to

Transformation of a Star into a Planet in a Millisecond Pulsar Binary

This pulsar PSR J1719−1438, a 5.7-millisecond pulsar detected in a recent survey with the Parkes 64-meter radio telescope, is shown to be in a binary system with an orbital period of 2.2 hours.