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astro-ph.HE2024
Long Pulse by Short Central Engine: Prompt emission from expanding dissipation rings in the jet front of gamma-ray bursts
Shu-Xu Yi, Emre Seyit Yorgancioglu, S. -L. Xiong +1
Recent observations have challenged the long-held opinion that the duration of gamma-ray burst (GRB) prompt emission is determined by the activity epochs of the central engine. Spe…
astro-ph.HE2024
Temporal and Spectral Analysis of the Unique and Second Brightest Gamma-Ray Burst GRB 230307A: Insights from GECAM and Fermi/GBM Observations
R. Moradi, C. W. Wang, B. Zhang +6
In this study, we present the pulse profile of the unique and the second brightest gamma-ray burst GRB 230307A, and analyze its temporal behavior using a joint GECAM--Fermi/GBM tim…
astro-ph.CO2024
Muon neutrinos and the cosmological abundance of primordial black holes
Jiali Hao, Yupeng Yang, Qianyong Li +2
In the mixed dark matter scenarios consisting of primordial black holes (PBHs) and particle dark matter (DM), PBHs can accrete surrounding DM particles to form ultracompact minihal…