Constraining Anisotropic Lorentz Violation via the Spectral-lag Transition of GRB 160625B

Wei, Jun-Jie; Wu, Xue-Feng; Zhang, Bin-Bin; Shao, L.; Mészáros, P.; Kostelecký, V. Alan

doi:10.3847/1538-4357/aa7630

Cited by 33 publications

(27 citation statements)

References 48 publications

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“…Within a comprehensive effective field theory description of Lorentz violation (Colladay & Kostelecký 1997Kostelecký 2004;Tasson 2014), the relative group velocity of GWs and EM waves, is controlled by differences in coefficients for Lorentz violation in the gravitational sector and the photon sector at each mass dimension d (Kostelecký & Mewes 2016Wei et al 2017). We focus here on the non-birefringent, non-dispersive limit at mass dimension d=4, as it yields by far the most impressive results.…”

Section: Lorentz Invariance Violation Limitsmentioning

confidence: 99%

Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A

Abbott¹,

Abbott²,

Abbott³

et al. 2017

ApJL

2,995

2,079

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On 2017 August 17, the gravitational-wave event GW170817 was observed by the Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB170817A was observed independently by the Fermi Gamma-ray Burst Monitor, and the Anti-Coincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory. The probability of the near-simultaneous temporal and spatial observation of GRB170817A and GW170817 occurring by chance is 5.0 10 8 -. We therefore confirm binary neutron star mergers as a progenitor of short GRBs. The association of GW170817 and GRB170817A provides new insight into fundamental physics and the origin of short GRBs. We use the observed time delay of 1.74 0.05 s +  () between GRB170817A and GW170817 to: (i) constrain the difference between the speed of gravity and the speed of light to be between 3 10 15 -´and 7 10 16 +´times the speed of light, (ii) place new bounds on the violation of Lorentz invariance, (iii) present a new test of the equivalence principle by constraining the Shapiro delay between gravitational and electromagnetic radiation. We also use the time delay to constrain the size and bulk Lorentz factor of the region emitting the gamma-rays. GRB170817A is the closest short GRB with a known distance, but is between 2 and 6 orders of magnitude less energetic than other bursts with measured redshift. A new generation of gamma-ray detectors, and subthreshold searches in existing detectors, will be essential to detect similar short bursts at greater distances. Finally, we predict a joint detection rate for the Fermi Gamma-ray Burst Monitor and the Advanced LIGO and Virgo detectors of 0.1-1.4 per year during the 2018-2019 observing run and 0.3-1.7 per year at design sensitivity.

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Section: Lorentz Invariance Violation Limitsmentioning

confidence: 99%

Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A

Abbott¹,

Abbott²,

Abbott³

et al. 2017

ApJL

2,995

2,079

View full text Add to dashboard Cite

show abstract

“…Wei et al [51,52] analyzed a burst GRB160625B with unusually high photon statistics and a steep decline from positive lags to smaller ones with increasing photon energy in the range 8-20 MeV. They have fitted the spectral lag data using a power law for the intrinsic lag and a linear or quadratic term corresponding to the LIV correction.…”

Section: Fig 3 Lags Vs I 2 ðZþmentioning

confidence: 99%

Commutative or noncommutative spacetime? Two length scales of noncommutativity

Mendes

2019

Phys. Rev. D

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The noncommutativity of the spacetime coordinates has been explored in several contexts, mostly associated with phenomena at the Planck length scale. However, approaching this question through deformation theory and the principle of stability of physical theories, one concludes that the scales of the noncommutativity of the coordinates and the noncommutativity of the generators of translations are independent. This suggests that the scale of the spacetime coordinates' noncommutativity could be larger than the Planck length. This paper attempts to explore the experimental perspectives to settle this question, either in the lab or by measurements of phenomena of cosmological origin.

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“…Astrophysical tests of Lorentz symmetry include time of flight measurements (see, e.g., Refs. [13][14][15][16][17]) and polarization measurements (see, e.g., Refs. [18][19][20]).…”

Section: Introductionmentioning

confidence: 99%

Constraints on Lorentz Invariance Violation from Optical Polarimetry of Astrophysical Objects

Kislat

2018

Symmetry

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Theories of quantum gravity suggest that Lorentz invariance, the fundamental symmetry of the Theory of Relativity, may be broken at the Planck energy scale. While any deviation from conventional Physics must be minuscule in particular at attainable energies, this hypothesis motivates ever more sensitive tests of Lorentz symmetry. In the photon sector, astrophysical observations, in particular polarization measurements, are a very powerful tool because tiny deviations from Lorentz invariance will accumulate as photons propagate over cosmological distances. The Standard-Model Extension (SME) provides a theoretical framework in the form of an effective field theory that describes low-energy effects due to a more fundamental quantum gravity theory by adding additional terms to the Standard Model Lagrangian. These terms can be ordered by the mass dimension d of the corresponding operator and lead to a wavelength, polarization, and direction dependent phase velocity of light. Lorentz invariance violation leads to an energy-dependent change of the Stokes vector as photons propagate, which manifests itself as a rotation of the polarization angle in measurements of linear polarization. In this paper, we analyze optical polarization measurements from 63 Active Galactic Nuclei (AGN) and Gamma-ray Bursts (GRBs) to search for Lorentz violating signals. We use both spectropolarimetric measurements, which directly constrain the change of linear polarization angle, as well as broadband spectrally integrated measurements. In the latter, Lorentz invariance violation manifests itself by reducing the observed net polarization fraction. Any observation of non-vanishing linear polarization thus leads to constraints on the magnitude of Lorentz violating effects. We derive the first set limits on each of the 10 individual birefringent coefficients of the minimal SME with d = 4 , with 95% confidence limits on the order of 10−34 on the dimensionless coefficients.

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Constraining Anisotropic Lorentz Violation via the Spectral-lag Transition of GRB 160625B

Cited by 33 publications

References 48 publications

Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A

Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A

Commutative or noncommutative spacetime? Two length scales of noncommutativity

Constraints on Lorentz Invariance Violation from Optical Polarimetry of Astrophysical Objects

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