IAFE 05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
The progenitors of long gamma-ray bursts
Autor/es:
PELLIZZA, L.J.; NUZA, S.E.; TISSERA, P.B.; SCANNAPIECO, C.; MIRABEL, I.F.
Lugar:
La Plata
Reunión:
Otro; First La Plata
International School
Compact Objects
First La Plata International School: "Compact Objects and their Emission"; 2008
Institución organizadora:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata
Resumen:
We present a scenario for long-duration gamma-ray burst (LGRB) production and energetics, which coupled to cosmological numerical simulations of structure formation in hierarchical models allow us to synthesize LGRB populations and compare their observables to high-energy data from different observatories. Our preliminary results indicate that a simple proportionality between the LGRB rate and the cosmic star formation rate can not explain consistently all observed data currently gathered, although it can separately explain CGRO and Swift data. At present we are exploring more exotic scenarios, in which the metallicity of the stellar progenitors influences the generation and properties of LGRBs.
