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

被引：23

作者：

Wei, Jun-Jie ^{[1
,2
]}

Wu, Xue-Feng ^{[1
,3
,4
]}

Zhang, Bin-Bin ^{[5
,6
]}

Shao, Lang ^{[1
,7
]}

Meszaros, Peter ^{[8
,9
,10
]}

Kostelecky, V. Alan ^{[11
]}

机构：

[1] Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China

[2] Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China

[3] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China

[4] Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210008, Peoples R China

[5] CSIC, IAA, POB 03004, E-18080 Granada, Spain

[6] Scientist Support LLC, Madison, AL 35758 USA

[7] Hebei Normal Univ, Dept Space Sci & Astron, Shijiazhuang 050024, Peoples R China

[8] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA

[9] Penn State Univ, Dept Phys, Davey Lab 104, University Pk, PA 16802 USA

[10] Penn State Univ, Ctr Particle & Gravitat Astrophys, Inst Gravitat & Cosmos, Davey Lab 525, University Pk, PA 16802 USA

[11] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

来源：

ASTROPHYSICAL JOURNAL | 2017年 / 842卷 / 02期

基金：

以色列科学基金会; 美国能源部; 中国国家自然科学基金;

关键词：

astroparticle physics; gamma-ray burst: individual (GRB 160625B); gravitation; QUANTUM-GRAVITY; CPT VIOLATION; TESTS;

D O I：

10.3847/1538-4357/aa7630

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Violations of Lorentz invariance can lead to an energy-dependent vacuum dispersion of light, which results in arrival-time differences of photons with different energies arising from a given transient source. In this work, direction-dependent dispersion constraints are obtained on nonbirefringent Lorentz-violating effects using the observed spectral lags of the gamma-ray burst GRB 160625B. This burst has unusually large high-energy photon statistics, so we can obtain constraints from the true spectral time lags of bunches of high-energy photons rather than from the rough time lag of a single highest-energy photon. Also, GRB 160625B is the only burst to date having a well-defined transition from positive lags to negative lags, providing a unique opportunity to distinguish Lorentz-violating effects from any source-intrinsic time lag in the emission of photons of different energy bands. Our results place comparatively robust two-sided constraints on a variety of isotropic and anisotropic coefficients for Lorentz violation, including the first bounds on Lorentz-violating effects from operators of mass dimension 10 in the photon sector.

引用

页数：6

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