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An External Inverse Compton Emission Model of Gamma-Ray Burst High-Energy Lags
Kenji Toma, Xue-Feng Wu, Peter Meszaros
The Fermi satellite has been reporting the detailed temporal properties of gamma-ray bursts (GRBs) in an extremely broad spectral range, 8 keV - 300 GeV, in particular, the unexpec…
Klein-Nishina effects on the high-energy afterglow emission of gamma-ray bursts
Xiang-Yu Wang, Hao-Ning He, Zhuo Li +2
Extended high-energy(>100MeV) gamma-ray emission that lasts much longer than the prompt sub-MeV emission has been detected from quite a few gamma-ray bursts (GRBs) by Fermi Large A…
Early afterglows from radially structured outflows and the application to X-ray shallow decays
Xue-Wen Liu, Xue-Feng Wu, Yuan-Chuan Zou +1
In the fireball model, it is more physically realistic that gamma-ray burst (GRB) ejecta have a range of bulk Lorentz factors (assuming ). The low Lorentz factor p…
Diffuse high energy neutrinos and cosmic rays from hyperflares of soft-gamma repeaters
Xue-Wen Liu, Xue-Feng Wu, Tan Lu
We calculate the diffuse high energy (TeV - PeV) neutrino emission from hyperflares of Soft-Gamma Repeaters (SGRs), like the hyperflare risen from \astrobj{SGR 1806-20} on December…
An up-scattered cocoon emission model of Gamma-Ray Burst high-energy lags
Kenji Toma, Xue-Feng Wu, Peter Meszaros
The Fermi Gamma-ray Space Telescope recently detected the most energetic gamma-ray burst so far, GRB 080916C, and reported its detailed temporal properties in an extremely broad sp…
Late-time detections of the X-ray afterglow of GRB 060729 with Chandra - the latest detections ever of an X-ray afterglow
Dirk Grupe, David N. Burrows, Xue-Feng Wu +8
We report on 5 Chandra observations of the X-ray afterglow of the Gamma-Ray Burst GRB 060729 performed between 2007 March and 2008 May. In all five observations the afterglow is cl…