4 papers
On the Kinetic Energy and Radiative Efficiency of Gamma-Ray Bursts
Nicole M. Lloyd-Ronning, Bing Zhang
Using measured X-ray luminosities to 17 Gamma-Ray Bursts (GRBs) during the afterglow phase and accounting for radiative losses, we calculate the kinetic energy of these bursts and…
Early afterglow, magnetized central engine, and a quasi-universal jet configuration for long GRBs
Bing Zhang, Shiho Kobayashi, Peter Meszaros +2
Two separate topics are discussed. (1) We describe the classifications of the long GRB early afterglow lightcurves within the framework of the fireball shock model, focusing on the…
Quasi-universal Gaussian jets: a unified picture for gamma-ray bursts and X-ray flashes
Bing Zhang, Xinyu Dai, Nicole M. Lloyd-Ronning +1
An observed correlation Ep \propto (E_{iso})^{1/2} extending from Gamma-ray Bursts (GRBs) to X-ray flashes (XRFs) poses problems both for a power-law universal jet model where the…
On the Structure of Quasi-Universal Jets for Gamma-Ray Bursts
Nicole Lloyd-Ronning, Xinyu Dai, Bing Zhang
The idea that GRBs originate from uniform jets has been used to explain numerous observations of breaks in the GRB afterglow lightcurves. We explore the possibility that GRBs inste…