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COSMIC TRANSIENTS TEST EINSTEIN'S EQUIVALENCE PRINCIPLE OUT TO GeV ENERGIES
Gao, He1,2,3,4,6; Wu, Xue-Feng1,2,5; Meszaros, Peter2,3,4
2015-09-10
Source PublicationASTROPHYSICAL JOURNAL
Volume810Issue:2Pages:121
AbstractThe 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 time of flight through the same gravitational field. Here we use the time delays between correlated photons from cosmological transients to constrain the accuracy of the EEP. We take data from two gamma-ray bursts as an example and, as a lower limit to the theoretical time delays between different energies, we use delays arising from only the gravitational field of our own galaxy. We then show that the parameterized post-Newtonian parameter gamma is the same for photons over energy ranges between eV and MeV and between MeV and GeV to a part in 10(-7), which is at least one order of magnitude better than previous limits. Combining this bound on the wavelength dependence of gamma with the absolute bound vertical bar gamma - 1 vertical bar < 0.3% from light-deflection measurements at optical (eV) wavelengths, we thus extend this absolute bound on gamma to GeV energies.
KeywordGamma-ray Burst: General Gravitation
Subject Area天文和天体物理
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/810/2/121
WOS KeywordGAMMA-RAY BURSTS ; GENERAL-RELATIVITY ; PARAMETER GAMMA ; GRB 080319B ; MILKY-WAY ; TELESCOPE ; EMISSION ; NEUTRINOS ; MISSION ; SEARCH
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000362083700037
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/14875
Collection南极天文中心
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
3.Penn State Univ, Dept Phys, Davey Lab 525, University Pk, PA 16802 USA
4.Penn State Univ, Inst Gravitat & Cosmos, Ctr Particle & Gravitat Astrophys, Davey Lab 525, University Pk, PA 16802 USA
5.Nanjing Univ, Purple Mt Observ, Joint Ctr Nucl Particle Phys & Cosmol, Nanjing 210008, Jiangsu, Peoples R China
6.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Gao, He,Wu, Xue-Feng,Meszaros, Peter. COSMIC TRANSIENTS TEST EINSTEIN'S EQUIVALENCE PRINCIPLE OUT TO GeV ENERGIES[J]. ASTROPHYSICAL JOURNAL,2015,810(2):121.
APA Gao, He,Wu, Xue-Feng,&Meszaros, Peter.(2015).COSMIC TRANSIENTS TEST EINSTEIN'S EQUIVALENCE PRINCIPLE OUT TO GeV ENERGIES.ASTROPHYSICAL JOURNAL,810(2),121.
MLA Gao, He,et al."COSMIC TRANSIENTS TEST EINSTEIN'S EQUIVALENCE PRINCIPLE OUT TO GeV ENERGIES".ASTROPHYSICAL JOURNAL 810.2(2015):121.
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