Testing Einstein's equivalence principle with short gamma-ray bursts

被引：17

作者：

Sang, Yu ^{[1
]}

Lin, Hai-Nan ^{[2
]}

Chang, Zhe ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 460卷 / 02期

基金：

中国国家自然科学基金;

关键词：

gravitation; gamma-ray burst: general; LORENTZ INVARIANCE VIOLATION; BASE-LINE INTERFEROMETRY; FAST RADIO-BURSTS; GENERAL-RELATIVITY; FERMI OBSERVATIONS; GEV ENERGIES; COMPONENT; PHOTON; LIMITS; MASS;

D O I：

10.1093/mnras/stw1136

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Einstein's equivalence principle (EEP) can be tested by the time delay between photons with different energies passing through a gravitational field. As one of the most energetic explosions in the Universe, gamma-ray bursts (GRBs) provide an effective tool to test the accuracy of EEP. In this paper, we use the continuous spectra of 20 short GRBs detected by the Swift/Burst Alert Telescope to test the validity of EEP. Taking the duration of GRBs as the upper limit of the time delay induced by EEP violation (assuming that the high energy photons arrive later than the low energy photons), the difference of the parametrized post-Newtonian parameter is constrained with high accuracy. The strictest constraint, |gamma(150 keV) - gamma(15 keV)| < 5.59 x 10(-10) from GRB 150101B, is about 1 similar to 2 orders of magnitude tighter than previous constraints. Moreover, our result is more statistically significant than previous results because we use the continuous spectra instead of isolated photons.

引用

页码：2282 / 2285

页数：4

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