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New test of weak equivalence principle using polarized light from astrophysical events
Wu, Xue-Feng1,2,3; Wei, Jun-Jie1,4; Lan, Mi-Xiang1; Gao, He5; Dai, Zi-Gao6; Meszaros, Peter7,8,9
2017-05-03
Source PublicationPHYSICAL REVIEW D
ISSN2470-0010
Volume95Issue:10Pages:6
Abstract

Einstein's weak equivalence principle (WEP) states that any freely falling, uncharged test particle follows the same identical trajectory independent of its internal structure and composition. Since the polarization of a photon is considered to be part of its internal structure, we propose that polarized photons from astrophysical transients, such as gamma-ray bursts (GRBs) and fast radio bursts (FRBs), can be used to constrain the accuracy of the WEP through the Shapiro time delay effect. Assuming that the arrival time delays of photons with different polarizations are mainly attributed to the gravitational potential of the Laniakea supercluster of galaxies, we show that a strict upper limit on the differences of the parametrized post-Newtonian parameter. value for the polarized optical emission of GRB 120308A is Delta(gamma) < 1.2 x 10(-10), for the polarized gamma-ray emission of GRB 100826A is Delta(gamma) < 1.2 x 10(-10), and for the polarized radio emission of FRB 150807 is Delta(gamma) < 2.2 x 10(-6). These are the first direct verifications of the WEP for multiband photons with different polarizations. In particular, the result from FRB 150807 provides the most stringent limit to date on a deviation from the WEP, improving by one order of magnitude the previous best result based on Crab pulsar photons with different energies.

DOI10.1103/PhysRevD.95.103004
WOS KeywordFAST RADIO-BURST ; GAMMA-RAY BURST ; GENERAL-RELATIVITY ; GRB 041219A ; FRB 150418 ; EMISSION ; GALAXY ; CONFRONTATION ; LOCALIZATION ; AFTERGLOW
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000400670200001
PublisherAMER PHYSICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22848
Collection中国科学院紫金山天文台
Corresponding AuthorWu, Xue-Feng
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
3.Nanjing Univ, Joint Ctr Particle Nucl Phys & Cosmol, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
4.Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China
5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
6.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
7.Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA
8.Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA
9.Penn State Univ, Inst Gravitat & Cosmos, Ctr Particle & Gravitat Astrophys, 525 Davey Lab, University Pk, PA 16802 USA
Recommended Citation
GB/T 7714
Wu, Xue-Feng,Wei, Jun-Jie,Lan, Mi-Xiang,et al. New test of weak equivalence principle using polarized light from astrophysical events[J]. PHYSICAL REVIEW D,2017,95(10):6.
APA Wu, Xue-Feng,Wei, Jun-Jie,Lan, Mi-Xiang,Gao, He,Dai, Zi-Gao,&Meszaros, Peter.(2017).New test of weak equivalence principle using polarized light from astrophysical events.PHYSICAL REVIEW D,95(10),6.
MLA Wu, Xue-Feng,et al."New test of weak equivalence principle using polarized light from astrophysical events".PHYSICAL REVIEW D 95.10(2017):6.
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