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Fast Radio Bursts have recently been used to place limits on Einstein's Equivalence Principle via observations of time delays between photons of different radio frequencies by \citet{wei15}. These limits on differential post-Newtonian…

Cosmology and Nongalactic Astrophysics · Physics 2016-04-06 Steven J Tingay , David L Kaplan

Short-duration gamma-ray bursts (SGRBs) are widely believed to be powered by the mergers of compact binaries, such as binary neutron stars or possibly neutron star-black hole binaries. Though the prospect of detecting SGRBs with…

High Energy Astrophysical Phenomena · Physics 2016-08-12 Xiang Li , Yi-Ming Hu , Yi-Zhong Fan , Da-Ming Wei

The Einstein Probe (EP) satellite, dedicated at time-domain high-energy astrophysics and multi-messenger astronomy, was recently launched and successfully put into operation. The wide-field X-ray telescope (WXT, 0.5-4 keV) onboard has…

High Energy Astrophysical Phenomena · Physics 2025-04-22 Hao-Xuan Gao , Jin-Jun Geng , Yi-Fang Liang , Hui Sun , Fan Xu , Xue-Feng Wu , Yong-Feng Huang , Zi-Gao Dai , Wei-Min Yuan

The status of experimental tests of general relativity and of theoretical frameworks for analysing them is reviewed. Einstein's equivalence principle (EEP) is well supported by experiments such as the Eotvos experiment, tests of special…

General Relativity and Quantum Cosmology · Physics 2015-06-25 Clifford M. Will

A conservative constraint on the Einstein Weak Equivalence Principle (WEP) can be obtained under the assumption that the observed time delay between correlated particles from astronomical sources is dominated by the gravitational fields…

High Energy Astrophysical Phenomena · Physics 2016-08-03 Xue-Feng Wu , He Gao , Jun-Jie Wei , Xi-Long Fan , Peter Mészáros , Bing Zhang , Zi-Gao Dai , Shuang-Nan Zhang , Zong-Hong Zhu

Fast radio bursts (FRBs) are short duration ($\sim$millisecond) radio transients with cosmological origin. The simple sharp features of the FRB signal have been utilized to probe two fundamental laws of physics, namey, testing Einstein's…

High Energy Astrophysical Phenomena · Physics 2019-09-11 Nan Xing , He Gao , Junjie Wei , Zhengxiang Li , Weiyang Wang , Bing Zhang , Xue-Feng Wu , Peter Mészáros

Current constraints on Einstein's weak equivalence principle (WEP) utilize the observed time delay between correlated particles of astronomical sources. However, the intrinsic time delay due to particle emission time is impossible to…

High Energy Astrophysical Phenomena · Physics 2018-09-26 H. Yu , F. Y. Wang

We consider the problem of testing the Einstein Equivalence Principle (EEP) by measuring the gravitational redshift with two Earth-orbiting stable atomic clocks. For a reasonably restricted class of orbits we find an optimal experiment…

General Relativity and Quantum Cosmology · Physics 2021-08-24 D. A. Litvinov , S. V. Pilipenko

The status of experimental tests of general relativity and of theoretical frameworks for analyzing them are reviewed and updated. Einstein's equivalence principle (EEP) is well supported by experiments such as the Eotvos experiment, tests…

General Relativity and Quantum Cosmology · Physics 2014-08-06 Clifford M. Will

Fast Radio Bursts (FRBs) are short astrophysical transients of extragalactic origin. Their burst signal is dispersed by the free electrons in the large-scale-structure (LSS), leading to delayed arrival times at different frequencies.…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-28 Robert Reischke , Steffen Hagstotz

Gamma-ray bursts (GRBs) are the most powerful explosions in the universe and probe physics under extreme conditions. GRBs divide into two classes, of short and long duration, thought to originate from different types of progenitor systems.…

High Energy Astrophysical Phenomena · Physics 2014-11-20 LAT Collaboration

Weak Equivalent Principle (WEP) can be tested through the parameterized post-Newtonian parameter $\gamma$, representing the space curvature produced by unit rest mass. The parameter $\gamma$ in turn has been constrained by comparing the…

General Relativity and Quantum Cosmology · Physics 2017-03-22 Yueyang Zhang , Biping Gong

Five TeV neutrino events weakly correlated with five gamma-ray bursts (GRBs) were detected recently by IceCube. This work is an attempt to show that if the GRB identifications are verified, the observed time delays between the TeV neutrinos…

High Energy Astrophysical Phenomena · Physics 2016-08-24 Jun-Jie Wei , Xue-Feng Wu , He Gao , Peter Mészáros

The \emph{Swift} Burst Alert Telescope (BAT), operating in the 15--150 keV energy band, struggles to detect the peak energy ($E_{\rm p}$) of gamma-ray bursts (GRBs), as most GRBs have $E_{\rm p}$ values typically distributed between 200-300…

High Energy Astrophysical Phenomena · Physics 2024-12-12 Liang Li , Yu Wang

The Einstein Equivalence Principle (EEP) is of crucial importance to test the foundations of general relativity. When the particles involved in the test exhibit quantum properties, it is unknown whether this principle still holds. A…

Quantum Physics · Physics 2024-10-10 Carlo Cepollaro , Flaminia Giacomini

In this paper, we present a novel method to test the Einstein's Equivalence Principle (EEP) using (simultaneous) multi-wavelength radio observations of polarized blazars. We analyze simultaneous multi-wavelength polarization observations of…

High Energy Astrophysical Phenomena · Physics 2020-03-04 Shuang-Xi Yi , Yuan-Chuan Zou , Xuan Yang , Bin Liao , Shao-Wen Wei

A scheme of an optical detector is proposed for checking Einsteins equivalence principle (EEP) in a null gravitational redshift experiment and for testing methods for calculating the length of a resonator in a weak variable gravitational…

General Relativity and Quantum Cosmology · Physics 2008-01-07 R. A. Daishev , Z. G. Murzakhanov , A. F. Skochilov

We investigate the possibility of testing of the Einstein Equivalence Principle (EEP) using measurements of anomalous magnetic moments of elementary particles. We compute the one loop correction for the $g-2$ anomaly within the class of non…

General Relativity and Quantum Cosmology · Physics 2010-01-06 C. Alvarez , R. B. Mann

Gamma-ray bursts (GRBs) are short and intense flashes at the cosmological distances, which are the most luminous explosions in the Universe. The high luminosities of GRBs make them detectable out to the edge of the visible universe. So,…

High Energy Astrophysical Phenomena · Physics 2016-02-17 Patrick Petitjean , F. Y. Wang , X. F. Wu , J. J. Wei

The Einstein Equivalence Principle (EEP) is one of the foundations of the theory of General Relativity and several alternative theories of gravitation predict violations of the EEP. Experimental constraints on this fundamental principle of…

General Relativity and Quantum Cosmology · Physics 2015-11-19 P. Delva , A. Hees , S. Bertone , E. Richard , P. Wolf