A Unified Model of Short and Long Gamma-Ray Bursts, X-Ray-rich Gamma-Ray Bursts, and X-Ray Flashes
نویسندگان
چکیده
منابع مشابه
A Unified Model of Short and Long Gamma-Ray Bursts, X-Ray Rich Gamma-Ray Bursts, and X-Ray Flashes
Taking into account the recent suggestion that a short gamma-ray burst (GRB) looks like the first 1 sec of a long GRB, we propose that the jet of a GRB consists of multiple sub-jets or sub-shells (i.e., an inhomogeneous jet model). The multiplicity of the sub-jets along a line of sight ns is an important parameter. If ns is large (≫ 1) the event looks like a long GRB, while if ns is small (∼ 1)...
متن کاملX-ray flashes and X-ray rich Gamma Ray Bursts
X-ray flashes are detected in the Wide Field Cameras on BeppoSAX in the energy range 2-25 keV as bright X-ray sources lasting of the order of minutes, but remaining undetected in the Gamma Ray Bursts Monitor on BeppoSAX. They have properties very similar to the x-ray counterparts of GRBs and account for some of the Fast X-ray Transient events seen in almost every x-ray satellite. We review thei...
متن کاملProperties of X- Ray Rich Gamma Ray Bursts and X-Ray Flashes
We study the spectrum of the prompt emission and the X-ray and optical afterglow fluxes of X-Ray Rich Gamma Ray Burst (XRRs) and X-Ray Flashes (XRFs). A comparison is then performed with classical Gamma Ray Bursts (GRBs). We derive a sample of 54 events XRRs/XRFs observed by BeppoSAX and HETE-2 , by adopting the same hardness spectral ratio for both satellites. We analyze the distribution of th...
متن کاملX-ray Flashes from Off-axis Gamma-Ray Bursts
Ioka and Nakamura (2001) proposed a simple jet model which is compatible with the peak luminosity-spectral lag relation, the peak luminosity-variability relation and various other relations in the Gamma-Ray Bursts. If the viewing angle is much larger than the collimation angle of the jet in the model by Ioka and Nakamura, for appropriate model parameters we obtain the observational characterist...
متن کاملA Unified Jet Model of X-Ray Flashes and Gamma-Ray Bursts
HETE-2 has provided strong evidence that the properties of X-Ray Flashes (XRFs) and GRBs form a continuum, and therefore that these two types of bursts are the same phenomenon. We show that both the structured jet and the uniform jet models can explain the observed properties of GRBs reasonably well. However, if one tries to account for the properties of both XRFs and GRBs in a unified picture,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2004
ISSN: 0004-637X,1538-4357
DOI: 10.1086/421872