In what sense a neutron star-black hole binary is the holy grail for testing gravity?

  title={In what sense a neutron star-black hole binary is the holy grail for testing gravity?},
  author={Manjari Bagchi and Diego F. Torres},
  journal={Journal of Cosmology and Astroparticle Physics},
  pages={055 - 055}
  • M. Bagchi, D. Torres
  • Published 15 May 2014
  • Physics
  • Journal of Cosmology and Astroparticle Physics
Pulsars in binary systems have been very successful to test the validity of general relativity in the strong field regime [1-4]. So far, such binaries include neutron star-white dwarf (NS-WD) and neutron star-neutron star (NS-NS) systems. It is commonly believed that a neutron star-black hole (NS-BH) binary will be much superior for this purpose. But in what sense is this true? Does it apply to all possible deviations? 

Neutron Star Physics in the Square Kilometre Array Era: An Indian Perspective

It is an exceptionally opportune time for astrophysics when a number of next-generation mega-instruments are poised to observe the Universe across the entire electromagnetic spectrum with

A search for observational manifestations of de Sitter relativity

De Sitter-invariant special relativity is a natural extension of Einstein’s special relativity. Within this framework, extension of special relativity to de Sitter space-time introduces a new length

Wormholes and naked singularities in Brans–Dicke cosmology

We perform an analytical and numerical study of static spherically symmetric solutions in the context of the Brans–Dicke-like cosmological model by Elizalde et al (2004 Phys. Rev. D 70 043539) with

Dynamical Effects in the Observed Rate of Change of the Orbital and the Spin Periods of Radio Pulsars: Improvement in the Method of Estimation and Its Implications

The observed values of the rate of change of the orbital and the spin periods of pulsars are affected by different dynamical effects, for example, the line-of-sight acceleration and the proper motion



Periastron advance in neutron star–black hole binaries

As neutron star - black hole binaries are expected to be discovered through future pulsar surveys using upcoming facilities, it is necessary to understand various observable properties of such

Binary pulsars and tests of general relativity

  • I. Stairs
  • Physics
    Proceedings of the International Astronomical Union
  • 2009
Abstract Binary pulsars are a valuable laboratory for gravitational experiments. Double-neutron-star systems such as the double pulsar provide the most stringent tests of strong-field gravity

A Massive Pulsar in a Compact Relativistic Binary

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

Binary Systems as Test-Beds of Gravity Theories

We review the general relativistic theory of the motion, and of the timing, of binary systems containing compact objects (neutron stars or black holes). Then we indicate the various ways one can use

Prospects for probing strong gravity with a pulsar-black hole system

Abstract The discovery of a pulsar (PSR) in orbit around a black hole (BH) is expected to provide a superb new probe of relativistic gravity and BH properties. Apart from a precise mass measurement

Pulsars in Binary Systems: Probing Binary Stellar Evolution and General Relativity

Radio pulsars in binary orbits often have short millisecond spin periods as a result of mass transfer from their companion stars, which provide constraints on binary evolution, characteristics of the binary pulsar population, and the masses of neutron stars with different mass-transfer histories.

Testing General Relativity with Pulsar Timing

  • I. Stairs
  • Physics
    Living reviews in relativity
  • 2003
An overview of pulsars is presented and the current status of and future prospects for tests of equivalence-principle violations and strong-field gravitational experiments are discussed.

Black Holes and Pulsar Binaries

Stellar mass black holes are formed in the field, and are observed in binaries. Population synthesis estimates for the formation of BH-PSR binaries suggest these may be observed, but with very large

Pulsar–black hole binaries in the Galactic Centre

Binaries consisting of a pulsar and a black hole (BH) are a holy grail of astrophysics, both for their significance for stellar evolution and for their potential application as probes of strong

Relativistic Binary Pulsars with Black Hole Companions

Binaries containing a stellar mass black hole and a recycled radio pulsar have so far eluded detection. We present a focused investigation of the formation and evolution of these systems in the