On the Detectability of Prompt Coherent Gamma-Ray Burst Radio Emission
| Autor: | J.-P. Macquart |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Physics
Astrophysics::High Energy Astrophysical Phenomena Compton scattering Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics symbols.namesake Lorentz factor Space and Planetary Science symbols Astrophysics::Solar and Stellar Astrophysics Outflow Gamma-ray burst Astrophysics::Galaxy Astrophysics Raman scattering |
| Zdroj: | The Astrophysical Journal. 658:L1-L4 |
| ISSN: | 1538-4357 0004-637X |
| Popis: | Both induced Compton scattering and induced Raman scattering strongly limit the observability of the extremely bright ( 10^3 (D/100 Mpc), or if the intrinsic opening angle of the emission is extremely small. Thus the presence or absence of such radio emission provides an excellent constraint on the Lorentz factor of the GRB outflow during the very early stages of its outburst. Induced Raman scattering imposes an even more stringent limit independent of the emission opening angle, but only effective if GRB emission must propagate through a dense progenitor wind within ~ 10^{15} cm from the blast center. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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