9 papers
Emission Processes of High Energy Gamma Rays from Gamma-Ray Bursts
X. Y. Wang, Z. G. Dai, T. Lu
Synchrotron self-Compton (SSC) process in the reverse shocks of gamma-ray bursts is suggested to be responsible for the observed prompt high-energy gamma-ray emissions from several…
Accretion-Induced Conversion of High-Velocity Neutron Stars to Strange Stars in Supernovae and Implications for Gamma-Ray Bursts
K. S. Cheng, Z. G. Dai
We present a new model for gamma-ray bursts (GRBs) that are not only associated with supernovae but also have small baryon contamination. In this model, we assume a newborn neutron…
Energy Sources of Soft Gamma-Ray Repeaters
K. S. Cheng, Z. G. Dai
Quiescence and burst emission and relativistic particle winds of soft gamma-ray repeaters (SGRs) have been widely interpreted to result from ultrastrongly magnetized neutron stars.…
The polarization and beaming effect for GRBs
K. S. Cheng, J. H. Fan, Z. G. Dai
Both observations and theoretical models suggest that the emissions in gamma-ray bursts (GRBs) and the afterglows are beamed. We argue that the recent polarization measured in the…
A Possible Model for the Supernova/Gamma-Ray Burst Connection
X. Y. Wang, Z. G. Dai, T. Lu +2
Conversion from neutron stars to strange stars as a possible mechanism of cosmological gamma-ray bursts (GRBs) has been discussed in previous works, although the existence of stran…
GRB: A Signature of Phase Transition to QGP?
R. X. Xu, Z. G. Dai, B. H. Hong +1
It is suggested that the inner energetic engine of Gamma ray burst (GRB) may be the result of the transition of normal hadron to quark-gluon plasma (QGP) in rapidly-rotating and sp…