223 citations · 638 across the 13 of their papers we have counts for
6 papers · 2 filters
Some Recent Peculiarities of the Early Afterglow
Tsvi Piran, Ehud Nakar, Jonathan Granot
We consider some recent developments in GRB/afterglow observations: (i) the appearance of a very hard prompt component in GRB 941017, and (ii) variability in the early afterglow li…
Testing the Predictions of the Universal Structured GRB Jet Model
Ehud Nakar, Jonathan Granot, Dafne Guetta
The two leading models for the structure of GRB jets are the uniform jet model and the universal structured jet (USJ) model. In the latter, all GRB jets are intrinsically identical…
Polarization and light curve variability: the "patchy shell" model
Ehud Nakar, Yonatan Oren
Recent advances in early detection and detailed monitoring of GRB afterglows have revealed variability in some afterglow light curves. One of the leading models for this behavior i…
Implications of the -ray Polarization of GRB 021206
Ehud Nakar, Tsvi Piran, Eli Waxman
We compare two possible scenarios for the producing of high level of polarization within the prompt emission of a GRB: synchrotron emission from a relativistic jet with a uniform (…
The Variable Light Curve of GRB 030329: The Case for Refreshed Shocks
Jonathan Granot, Ehud Nakar, Tsvi Piran
GRB 030329 is unique in many aspects. It has a very low redshift for a GRB, , and is therefore very bright and easy to monitor, making it the most well studied afterglow…
Modeling Fluctuations in the GRB-Afterglow Light Curves
Ehud Nakar, Tsvi Piran
The fluctuations observed in the light curves of some GRB-afterglows (such as GRB 021004) provide a useful tool to probe the circum-burst density profile and to probe the variation…