Testing Einstein's Equivalence Principle with supercluster Laniakea's gravitational field

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• 作者：Zhi-Xing Luo^a ; Bo Zhang^a ; Jun-Jie Wei^a ; Xue-Feng Wu^a ; ^b ; ^{xfwu@pmo.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Radio continuum ; general ; Gamma-ray burst ; general ; BL Lacertae objects ; general ; Gravitation
• 刊名：Journal of High Energy Astrophysics
• 出版年：2016
• 出版时间：March-June 2016
• 年：2016
• 卷：9-10
• 期：Complete
• 页码：35-38
• 全文大小：272 K

文摘

Comparing the parameterized post-Newtonian parameter γ values for different types of particles, or the same type of particles with different energies is an important method to test the Einstein Equivalence Principle (EEP). Assuming that the observed time delays are dominated by the gravitational potential of the Laniakea supercluster of galaxies, better results of EEP constraints can be obtained. In this paper, we apply photons from three kinds of cosmic transients, including TeV blazars, gamma-ray bursts as well as fast radio bursts to constrain EEP. With a gravitational field far more stronger than a single galaxy, we obtain 4–5 orders of magnitude more stringent than the previous results.