1k citations
- Rutgers, The State University of New JerseyUS16 papers
- Tel Aviv UniversityIL11 papers
- Bar-Ilan UniversityIL10 papers
- Centre National de la Recherche ScientifiqueFR10 papers
- University of ChicagoUS10 papers
- Weizmann Institute of ScienceIL10 papers
- Hungarian Academy of SciencesHU9 papers
- University of WashingtonUS8 papers
- California Institute of TechnologyUS7 papers
- Purple Mountain ObservatoryCN6 papers
- Universidad de SalamancaES6 papers
- University of California, BerkeleyUS6 papers
25 papers · 1 filter
Expected high energy emission from GRB 080319B and origins of the GeV emission of GRBs 080514B, 080916C and 081024B
Yuan-Chuan Zou, Yi-Zhong Fan, Tsvi Piran
We calculate the high energy (sub-GeV to TeV) prompt and afterglow emission of GRB 080319B that was distinguished by a naked-eye optical flash and by an unusual strong early X-ray…
Inspecting absorption in the spectra of extra-galactic gamma-ray sources for insight into Lorentz invariance violation
Uri Jacob, Tsvi Piran
We examine what the absorbed spectra of extra-galactic TeV gamma-ray sources, such as blazars, would look like in the presence of Lorentz invariance violation (LIV). Pair-productio…
High energy gamma-ray emission from Gamma-Ray Bursts -- before GLAST
Yi-Zhong Fan, Tsvi Piran
Gamma-ray bursts (GRBs) are short and intense emission of soft gamma-rays, which have fascinated astronomers and astrophysicists since their unexpected discovery in 1960s. The X-ra…
Do Newton's G and Milgrom's a_0 vary with cosmological epoch ?
Jacob D. Bekenstein, Eva Sagi
In the scalar tensor gravitational theories Newton's constant G_N evolves in the expanding universe. Likewise, it has been speculated that the acceleration scale a_0 in Milgrom's m…
Central engine afterglow of Gamma-ray Bursts
Yi-Zhong Fan, Tsvi Piran, Da-Ming Wei
Before 2004, nearly all GRB afterglow data could be understood in the context of the external shocks model. This situation has changed in the past two years, when it became clear t…
Tidal Evolution of Rubble Piles
Peter Goldreich, Re'em Sari
Many small bodies in the solar system are believed to be rubble piles, a collection of smaller elements separated by voids. We propose a model for the structure of a self-gravitati…