789 citations · 2.4k across the 26 of their papers we have counts for
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Optical and gamma-ray emissions from internal forward-reverse shocks: application to GRB 080319B?
Y. W. Yu, X. Y. Wang, Z. G. Dai
In the popular internal shock model for the prompt emission of gamma-ray bursts (GRBs), collisions between a series of relativistic shells generate lots of paired forward and rever…
Echo Emission From Dust Scattering and X-Ray Afterglows of Gamma-Ray Bursts
L. Shao, Z. G. Dai, N. Mirabal
We investigate the effect of X-ray echo emission in gamma-ray bursts (GRBs). We find that the echo emission can provide an alternative way of understanding X-ray shallow decays and…
The shock break-out of GRB 060218/SN 2006aj
S. Campana, V. Mangano, A. J. Blustin +36
Although the link between long Gamma Ray Bursts (GRBs) and supernovae (SNe) has been established, hitherto there have been no observations of the beginning of a supernova explosion…
Constraining and Dark Energy with Gamma-Ray Bursts
Z. G. Dai, E. W. Liang, D. Xu
An relationship with a small scatter for current -ray burst (GRB) data was recently reported, where is the beaming-correc…
High energy neutrinos from magnetars
Bing Zhang, Z. G. Dai, P. Meszaros +2
Magnetars can accelerate cosmic rays to high energies through the unipolar effect, and are also copious soft photon emitters. We show that young, fast-rotating magnetars whose spin…
Spectrum and Duration of Delayed MeV-GeV Emission of Gamma-Ray Bursts in Cosmic Background Radiation Fields
Z. G. Dai, T. Lu
We generally analyze prompt high-energy emission above a few hundreds of GeV due to synchrotron self-Compton scattering in internal shocks. However, such photons cannot be detected…
Overall Temporal Synchrotron Emissions from Relativistic Jets: Adiabatic and Radiative Breaks
Zhuo Li, Z. G. Dai, T. Lu
We discuss the GRB afterglow emission from a relativistic jet that is initially in the radiative regime in which the accelerated electrons are fast cooling. We note that such a ``s…
GRB Afterglows from Anisotropic Jets
Z. G. Dai, L. J. Gou
Some progenitor models of gamma-ray bursts (GRBs) (e.g., collapsars) may produce anisotropic jets in which the energy per unit solid angle is a power-law function of the angle ($\p…
Could the Unusual Optical Afterglow of GRB 000301c Arise from a Non-relativistic Shock with Energy Injection?
Z. G. Dai, T. Lu
Recent observations on the GRB 000301c afterglow show that three breaks appear in the R-band light curve, and in particular the decay slope at late times is as steep as -3.0. This…
Neutrino Afterglows and Progenitors of Gamma-Ray Bursts
Z. G. Dai, T. Lu
Currently popular models for progenitors of gamma-ray bursts (GRBs) are the mergers of compact objects and the explosions of massive stars. These two cases have distinctive environ…
Environment and Energy Injection Effects in GRB Afterglows
Z. G. Dai, T. Lu
In a recent paper (Dai & Lu 1999), we have proposed a simple model in which the steepening in the light curve of the R-band afterglow of the gamma-ray burst (GRB) 990123 is caused…
Intrinsic Parameters of GRB990123 from Its Prompt Optical Flash and Afterglow
X. Y. Wang, Z. G. Dai, T. Lu
We have constrained the intrinsic parameters, such as the magnetic energy density fraction (), the electron energy density fraction (), the initial Lorentz factor ($Γ_0…
The Afterglow of GRB 990123 and a Dense Medium
Z. G. Dai, T. Lu
Recent observations show that the temporal decay of the R-band afterglow from GRB 990123 steepened about 2.5 days after the burst. We here propose a possible explanation for such a…
Gamma-Ray Burst Afterglows: Effects of Radiative Corrections and Nonuniformity of the Surrounding Medium
Z. G. Dai, T. Lu
The afterglow of a gamma-ray burst (GRB) is commonly thought to be due to continuous deceleration of a relativistically expanding fireball in the surrounding medium. Assuming that…
Is GRO J1744-28 a Strange Star?
K. S. Cheng, Z. G. Dai, D. M. Wei +1
The unusal hard x-ray burster GRO J1744-28 recently discovered by the Compton Gamma-ray Observatory (GRO) can be modeled as a strange star with a dipolar magnetic field $\le 10^{11…
Gravitational Waves from Phase Transition of Accreting Neutron Stars
K. S. Cheng, Z. G. Dai
We propose that when neutron stars in low-mass X-ray binaries accrete sufficient mass and become millisecond pulsars, the interiors of these stars may undergo phase transitions, wh…