Z
Z. G. Dai
Researcher at Nanjing University
Publications - 50
Citations - 1415
Z. G. Dai is an academic researcher from Nanjing University. The author has contributed to research in topics: Gamma-ray burst & Neutrino. The author has an hindex of 19, co-authored 39 publications receiving 1264 citations. Previous affiliations of Z. G. Dai include Chinese Ministry of Education.
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High-energy cosmic rays and neutrinos from semirelativistic hypernovae
TL;DR: In this paper, it was shown that the external shock wave produced by the high-velocity ejecta of a hypernova can accelerate protons up to energies as high as 10 − 19 ǫ n/eV, and the cosmological hypernova rate is sufficient to account for the energy flux above the second knee.
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Afterglow Emission from Highly Collimated Jets with Flat Electron Spectra: Application to the GRB 010222 Case?
Z. G. Dai,K. S. Cheng +1 more
TL;DR: In this article, the authors derived light curves of the afterglow emission from highly collimated jets if the power-law index (p )o f the electron energy distribution is above 1 but below 2.
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Icecube nondetection of gamma-ray bursts: constraints on the fireball properties
TL;DR: In this paper, a revised analytic calculation of the neutrino flux was presented that predicts a flux of one order of magnitude lower than that obtained by the IceCube Collaboration.
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GRB 080916C: On the Radiation Origin of the Prompt Emission from keV/MeV TO GeV
TL;DR: In this paper, the authors show that high-energy gamma-ray emission from GRB 080916C is consistent with synchrotron origin by shock-accelerated electrons.
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Constraints on the photon mass with fast radio bursts
Xue-Feng Wu,Xue-Feng Wu,Songbo Zhang,He Gao,Jun-Jie Wei,Yuan-Chuan Zou,Wei-Hua Lei,Bing Zhang,Z. G. Dai,Peter Mészáros +9 more
TL;DR: In this paper, the authors show that by analyzing the delay time between different frequencies, the FRB data can place stringent upper limits on the rest mass of the photon, which is 10(20) times smaller than the electron.