TeV emission as an independent probe of GRB jet properties
نویسندگان
چکیده
منابع مشابه
Evidence for TeV Emission from GRB 970417a.
Milagrito, a detector sensitive to very high energy gamma rays, monitored the northern sky from 1997 February through 1998 May. With a large field of view and a high duty cycle, this instrument was well suited to perform a search for TeV gamma-ray bursts (GRBs). We report on a search made for TeV counterparts to GRBs observed by BATSE. BATSE detected 54 GRBs within the field of view of Milagrit...
متن کاملReverse Shock Emission as a Probe of GRB Ejecta
We calculate the reverse shock (RS) synchrotron emission in the optical and the radio wavelength bands from electron-positron pair enriched gamma-ray burst ejecta with the goal of determining the pair content of GRBs using early time observations. We take into account an extensive number of physical effects that influence radiation from the reverse-shock heated GRB ejecta. We find that optical/...
متن کاملThe polarisation of afterglow emission reveals GRB jet structure
We numerically compute light and polarization curves of γ-ray burst afterglows for various configurations of the jet structure and for different dynamical evolutions. We consider a standard homogeneous jet and a structured jet with power-law wings. We show that the lightcurves from these two configurations are very similar to each other, and therefore only very high quality data could allow us ...
متن کاملSearch for TeV Gamma-ray Emission from GRB 100621A, an extremely bright GRB in X-rays, with H.E.S.S
The long gamma-ray burst (GRB) 100621A, at the time the brightest X-ray transient ever detected by Swift-XRT in the 0.3–10 keV range, has been observed with the H.E.S.S. imaging air Cherenkov telescope array, sensitive to gamma radiation in the very-high-energy (VHE, >100 GeV) regime. Due to its relatively small redshift of z ∼ 0.5, the favourable position in the southern sky and the relatively...
متن کاملGRB 050408: An Atypical Gamma-Ray Burst as a Probe of an Atypical Galactic Environment
The bright GRB 050408 was localized by HETE-II near local midnight, enabling an impressive ground-based followup effort as well as space-based followup from Swift. The Swift data from the X-Ray Telescope (XRT) and our own optical photometry and spectrum of the afterglow provide the cornerstone for our analysis. Under the traditional assumption that the visible waveband was above the peak synchr...
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: Science China Physics, Mechanics & Astronomy
سال: 2023
ISSN: ['1869-1927', '1674-7348']
DOI: https://doi.org/10.1007/s11433-023-2150-5