147 citations · 1.7k across the 59 of their papers we have counts for
11 papers · 1 filter
A re-visit of the phase-resolved X-ray and γ-ray spectra of the Crab pulsar
Anisia P. S. Tang, J. Takata, J. J. Jia +1
We use a modified outer gap model to study the multi-frequency phase-resolved spectra of the Crab pulsar. The emissions from both poles contribute to the light curve and the phase-…
Polarization of high-energy emissions from the Crab pulsar
J. Takata, H. -K. Chang, K. S. Cheng
We investigate polarization of high-energy emissions from the Crab pulsar in the frame work of the outer gap accelerator, following previous works of Cheng and coworkers. The recen…
Modeling the Optical Afterglow of GRB 030329
Y. F. Huang, K. S. Cheng, T. T. Gao
The best-sampled afterglow light curves are available for GRB 030329. A distinguishing feature of this event is the obvious rebrightening at around 1.6 days after the burst. Propos…
Pulsar Wind Nebulae and the X-Ray Emission of Non-Accreting Neutron Stars
K. S. Cheng, Ronald E. Taam, W. Wang
The general properties of the non-thermal non-pulsed X-ray emission of rotation powered pulsars are investigated in the context of a pulsar wind nebula model. An examination of the…
Constraints on extra-dimensions and variable constants from cosmological gamma ray bursts
T. Harko, K. S. Cheng
The observation of the time delay between the soft emission and the high-energy radiation from cosmological gamma ray bursts can be used as an important observational test of multi…
Nucleation of quark matter in neutron stars cores
T. Harko, K. S. Cheng, P. S. Tang
We consider the general conditions of quark droplets formation in high density neutron matter. The growth of the quark bubble (assumed to contain a sufficiently large number of par…
Cooling Properties of Cloudy Bag Strange Stars
C. Y. Ng, K. S. Cheng, M. C. Chu
As the chiral symmetry is widely recognized as an important driver of the strong interaction dynamics, current strange stars models based on MIT bag models do not obey such symmetr…
Maximum mass and radius of strange stars in the linear approximation of the EOS
T. Harko, K. S. Cheng
The Chandrasekhar limit for strange stars described by a linear equation of state (describing quark matter with density-dependent quark masses) is evaluated. The maximum mass and r…
Afterglow Emission from Highly Collimated Jets with Flat Electron Spectra: Application to the GRB 010222 Case?
Z. G. Dai, K. S. Cheng
We derive light curves of the afterglow emission from highly collimated jets if the power-law index () of the electron energy distribution is above 1 but below 2. We find (1) be…
The Radio and Gamma-Ray Luminosities of Blazars
L. Zhang, K. S. Cheng, J. H. Fan
Based on the -ray data of blazars in the third EGRET catalog and radio data at 5 GHz, we studied the correlation between the radio and -ray luminosities using two statistical…
Gamma-Ray Bursts: Afterglows and Central Engines
K. S. Cheng, T. Lu
Gamma-ray bursts (GRBs) are most intense transient gamma-ray events in the sky when they are on together with the strong evidences (i.e. the isotropic and inhomogeneous distributio…