4 papers · 1 filter
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…
Basic properties of Gamma-ray loud blazars
K. S. Cheng, J. H. Fan, L. Zhang
In this paper, a method is proposed to determine the basic properties of -ray loud blazars, among them the central black hole mass, M, the Doppler factor, , the propagation a…
A Two-Step Model for Gamma-Ray Bursts Associated with Supernovae
K. S. Cheng, Z. G. Dai
We here propose a two-step model for gamma-ray bursts (GRBs) associated with supernovae. In the first step, the core collapse of a star with mass leads to a massive…