scholarly journals The ECLAIRs micro-satellite for multi-wavelength studies of gamma-ray burst prompt emission

2005 ◽  
Author(s):  
S. Schanne ◽  
J.-L. Atteia ◽  
D. Barret ◽  
S. Basa ◽  
M. Boer ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Burst ◽  
Multi Wavelength ◽  
Prompt Emission

The ECLAIRs micro-satellite for multi-wavelength studies of gamma-ray burst prompt emission

2005 ◽  
Vol 52 (6) ◽  
pp. 2778-2785 ◽  
Author(s):  
S. Schanne ◽  
J.-L. Atteia ◽  
D. Barret ◽  
S. Basa ◽  
M. Boer ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Burst ◽  
Multi Wavelength ◽  
Prompt Emission

scholarly journals Prompt emission from the counter jet of a short gamma-ray burst

2018 ◽  
Vol 2018 (3) ◽  
Author(s):  
Ryo Yamazaki ◽  
Kunihito Ioka ◽  
Takashi Nakamura
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Burst ◽  
Prompt Emission

scholarly journals On-axis view of GRB 170817A

2019 ◽  
Vol 628 ◽  
pp. A18 ◽  
Author(s):  
O. S. Salafia ◽  
G. Ghirlanda ◽  
S. Ascenzi ◽  
G. Ghisellini
Keyword(s):  
Gamma Ray ◽  
Surrounding Medium ◽  
Intrinsic Properties ◽  
Wave Event ◽  
Typical Event ◽  
Multi Wavelength ◽  
Star Binary ◽  
Jet Structure ◽  
Prompt Emission ◽  
Axis View

The peculiar short gamma-ray burst (SGRB) GRB 170817A has been firmly associated to the gravitational wave event GW170817, which has been unanimously interpreted as due to the coalescence of a double neutron star binary. The unprecedented behaviour of the non-thermal afterglow led to a debate over its nature, which was eventually settled by high-resolution VLBI observations that strongly support the off-axis structured jet scenario. Using information on the jet structure derived from multi-wavelength fitting of the afterglow emission and of the apparent VLBI image centroid motion, we compute the appearance of a GRB 170817A-like jet as seen by an on-axis observer and compare it to the previously observed population of SGRB afterglows and prompt emission events. We find that the intrinsic properties of the GRB 170817A jet are representative of a typical event in the SGRB population, hinting at a quasi-universal jet structure. The diversity in the SGRB afterglow population could therefore be ascribed in large part to extrinsic (redshift, density of the surrounding medium, viewing angle) rather than intrinsic properties. Although more uncertain, the comparison can be extended to the prompt emission properties, leading to similar conclusions.

scholarly journals GAMMA-RAY BURSTS: PROGRESS, PROBLEMS & PROSPECTS

2004 ◽  
Vol 19 (15) ◽  
pp. 2385-2472 ◽  
Author(s):  
BING ZHANG ◽  
PETER MÉSZÁROS
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Current Understanding ◽  
Shock Model ◽  
Gamma Ray Burst ◽  
Prompt Emission

The cosmological gamma-ray burst (GRB) phenomenon is reviewed. The broad observational facts and empirical phenomenological relations of the GRB prompt emission and afterglow are outlined. A well-tested, successful fireball shock model is introduced in a pedagogical manner. Several important uncertainties in the current understanding of the phenomenon are reviewed, and prospects of how future experiments and extensive observational and theoretical efforts may address these problems are discussed.

scholarly journals Gamma Ray Burst Prompt Emission Variability in Synchrotron and Synchrotron Self-Compton Lightcurves

2011 ◽  
Author(s):  
Lekshmi Resmi ◽  
Bing Zhang ◽  
J. E. McEnery ◽  
J. L. Racusin ◽  
N. Gehrels
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Burst ◽  
Prompt Emission

scholarly journals Gamma-Ray Burst Prompt Correlations

2018 ◽  
Vol 2018 ◽  
pp. 1-31 ◽  
Author(s):  
M. G. Dainotti ◽  
R. Del Vecchio ◽  
M. Tarnopolski
Keyword(s):  
Gamma Ray ◽  
Theoretical Models ◽  
Gamma Ray Bursts ◽  
Gamma Ray Burst ◽  
The Past ◽  
Two Parameter ◽  
Prompt Emission

The mechanism responsible for the prompt emission of gamma-ray bursts (GRBs) is still a debated issue. The prompt phase-related GRB correlations can allow discriminating among the most plausible theoretical models explaining this emission. We present an overview of the observational two-parameter correlations, their physical interpretations, and their use as redshift estimators and possibly as cosmological tools. The nowadays challenge is to make GRBs, the farthest stellar-scaled objects observed (up to redshift z=9.4), standard candles through well established and robust correlations. However, GRBs spanning several orders of magnitude in their energetics are far from being standard candles. We describe the advances in the prompt correlation research in the past decades, with particular focus paid to the discoveries in the last 20 years.

Some Recent Developments in γ-ray Burst Afterglow and Prompt Emission Models

2003 ◽  
Vol 214 ◽  
pp. 311-320
Author(s):  
Bing Zhang ◽  
Peter Mészáros ◽  
Junfeng Wang
Keyword(s):  
Gamma Ray ◽  
Current Data ◽  
Spectral Domain ◽  
Gamma Ray Burst ◽  
Temporal Domain ◽  
Global View ◽  
Recent Developments ◽  
Emission Models ◽  
Γ Ray ◽  
Prompt Emission

Extensive observational campaigns of afterglow hunting have greatly enriched our understanding of the gamma-ray burst (GRB) phenomenon. Efforts have been made recently to explore some afterglow properties or signatures that will be tested by the on-going or the future observational campaigns yet come. These include the properties of GRB early afterglows in the temporal domain; the GeV-TeV afterglow signatures in the spectral domain; as well as a global view about the GRB universal structured jet configuration. These recent efforts are reviewed. Within the standard cosmological fireball model, the very model(s) responsible for the GRB prompt emission is (are) not identified. These models are critically reviewed and confronted with the current data.

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