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Testing Einstein's Equivalence Principle with Fast Radio Bursts
Jun-Jie Wei, He Gao, Xue-Feng Wu +1
The accuracy of Einstein's Equivalence Principle (EEP) can be tested with the observed time delays between correlated particles or photons that are emitted from astronomical source…
Polarization Evolution of Early Optical Afterglows of Gamma-Ray Bursts
Mi-Xiang Lan, Xue-Feng Wu, Zi-Gao Dai
The central engine and jet composition of gamma-ray bursts (GRBs) remain mysterious. Here we suggest that observations on polarization evolution of early optical afterglows may she…
Long GRBs as a Tool to Investigate Star Formation in Dark Matter Halos
Jun-Jie Wei, Jing-Meng Hao, Xue-Feng Wu +1
First stars can only form in structures that are suitably dense, which can be parametrized by the minimum dark matter halo mass . must plays an important…
Cosmic Transients Test Einstein's Equivalence Principle out to GeV Energies
He Gao, Xue-Feng Wu, Peter Mészáros
The Einstein Equivalence Principle (EEP) can be probed with astrophysical sources emitting simultaneously different types of neutral particles, or particles with varying energies,…
GRB 080503 late afterglow re-brightening: signature of a magnetar powered merger-nova
He Gao, Xuan Ding, Xue-Feng Wu +2
GRB 080503 is a short gamma-ray burst (GRB) detected by \emph{Swift} and has been classified as a compact-star-merger-origin GRB. The soft extended emission and the simultaneous la…
The Age-Redshift Relationship of Old Passive Galaxies
Jun-Jie Wei, Xue-Feng Wu, Fulvio Melia +2
We use 32 age measurements of passively evolving galaxies as a function of redshift to test and compare the standard model (CDM) with the Universe. We show that t…