6533b85dfe1ef96bd12bf24e
RESEARCH PRODUCT
Numerical Models of Blackbody-Dominated GRBs
Christina C. ThöneAntonio De Ugarte PostigoC. Cuesta-martínezM. A. AloyPetar Mimicasubject
PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesBlack-body radiationAstrophysicsNumerical modelsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics - High Energy Astrophysical Phenomena7. Clean energyAstrophysics::Galaxy Astrophysicsdescription
Blackbody-dominated (BBD) gamma-ray bursts (GRBs) are events characterized by the absence of a typical afterglow, long durations and the presence of a significant thermal component following the prompt gamma-ray emission. GRB 101225A (the `Christmas burst') is a prototype of this class. A plausible progenitor system for it, and for the BBD-GRBs, is the merger of a neutron star (NS) and a helium core of an evolved, massive star. Using relativistic hydrodynamic simulations we model the propagation of an ultrarelativistic jet through the enviroment created by such a merger and we compute the whole radiative signature, both thermal and non-thermal, of the jet dynamical evolution. We find that the thermal emission originates from the interaction between the jet and the hydrogen envelope ejected during the NS/He merger.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-02-25 |