Constraints on frequency-dependent violations of Shapiro delay from GW150914

  title={Constraints on frequency-dependent violations of Shapiro delay from GW150914},
  author={Emre O. Kahya and Shantanu Desai},
  journal={Physics Letters B},

Constraints on differential Shapiro delay between neutrinos and photons from IceCube-170922A

On 22nd September 2017, the IceCube Collaboration detected a neutrino with energy of about 290 TeV from the direction of the gamma-ray blazar TXS 0506+056, located at a distance of about 1.75 Gpc.

GW170817 falsifies dark matter emulators

On August 17, 2017 the LIGO interferometers detected the gravitational wave (GW) signal (GW170817) from the coalescence of binary neutron stars. This signal was also simultaneously seen throughout

Limits on the Weak Equivalence Principle and Photon Mass with FRB 121102 Subpulses

Fast radio bursts (FRBs) are short-duration (∼millisecond) radio transients with cosmological origin. The simple sharp features of the FRB signal have been utilized to probe two fundamental laws of

Testing the Equivalence Principle and Lorentz Invariance with PeV Neutrinos from Blazar Flares.

It is suggested that the flight time difference between the PeV neutrino and gamma-ray photons from blazar flares can be used to constrain the violations of equivalence principle and the Lorentz invariance for neutrinos.

Multimessenger tests of the weak equivalence principle from GW170817 and its electromagnetic counterparts

The coincident detection of a gravitational-wave (GW) event GW170817 with electromagnetic (EM) signals (e.g., a short gamma-ray burst SGRB 170817A or a macronova) from a binary neutron star merger

Galactic Shapiro delay to the Crab pulsar and limit on weak equivalence principle violation

We calculate the total galactic Shapiro delay to the Crab pulsar by including the contributions from the dark matter as well as baryonic matter along the line of sight. The total delay due to dark

Testing fundamental physics with astrophysical transients

Explosive astrophysical transients at cosmological distances can be used to place precision tests of the basic assumptions of relativity theory, such as Lorentz invariance, the photon zero-mass

Precision test of the weak equivalence principle from gamma-ray burst polarization

If the weak equivalence principle (WEP) is broken, the measured values of the parametrized post-Newtonian parameter. from photons with left- and right-handed circular polarizations should differ

Tests of weak equivalence principle with the gravitational wave signals in the LIGO–Virgo catalogue GWTC-1

The weak equivalence principle (WEP) is the cornerstone of gravitational theories. At the local scale, WEP has been tested to high accuracy by various experiments. On the intergalactic distance




The Einstein Equivalence Principle (EEP) can be probed with astrophysical sources emitting simultaneously different types of neutral particles, or particles with varying energies, by testing their

A decisive test to confirm or rule out the existence of dark matter emulators using gravitational wave observations

We consider stable modified theories of gravity that reproduce galactic rotation curves and the observed amount of weak lensing without dark matter. In any such model gravity waves follow a different

Reduced time delay for gravitational waves with dark matter emulators

We discuss the implications for gravitational wave detectors of a class of modified gravity theories which dispense with the need for dark matter. These models, which are known as dark matter

New precision tests of the Einstein equivalence principle from SN1987A.

  • Longo
  • Physics
    Physical review letters
  • 1988
The relativistic time delays of the photons and neutrinos from SN1987A caused by the gravitational field of the authors' Galaxy are compared, and it is shown that they are equal, to an accuracy of approximately 0.2% of the predicted delay.

Testing Einstein's Equivalence Principle With Fast Radio Bursts.

It is proved that fast radio bursts (FRBs) of cosmological origin can be used to constrain the EEP with high accuracy, and a strict upper limit on the differences of the parametrized post-Newtonian parameter γ values is obtained.

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.

Fourth Test of General Relativity

Recent advances in radar astronomy have made possible a fourth test of Einstein's theory of general relativity. The test involves measuring the time delays between transmission of radar pulses

Test of the weak equivalence principle for neutrinos and photons.

This result provides direct evidence that the Shapiro geodesic time delay is identical, to this accuracy, for different elementary particles, independent of spin and internal quantum numbers.

The Confrontation between General Relativity and Experiment

  • C. Will
  • Physics
    Living reviews in relativity
  • 2014
Tests of general relativity at the post-Newtonian level have reached high precision, including the light deflection, the Shapiro time delay, the perihelion advance of Mercury, the Nordtvedt effect in lunar motion, and frame-dragging.