INVESTIGADORES
DE ROSSI Maria Emilia
congresos y reuniones científicas
Título:
Study of the relationship between the gamma ray bursts and their host galaxies
Autor/es:
NUZA, SEBASTIÁN E.; TISSERA, PATRICIA BEATRIZ; PELLIZZA, LEONARDO J.; LAMBAS, DIEGO G.; SCANNAPIECO, CECILIA; DE ROSSI, MARÍA EMILIA
Lugar:
La Plata, Buenos Aires, Argentina
Reunión:
Congreso; Reunión Anual de la Asociación Argentina de Astronomía Nro. 48; 2005
Institución organizadora:
Asociación Argentina de Astronomía
Resumen:
Gamma ray bursts (GRBs) belong to the most energetic events in the Universe. Recently, the extragalactic nature of these sources has been confirmed with the discovery of several host galaxies (HGs) and the measurement of their redshifts. To explain the origin of GRBs several models have been proposed, among which the coalescence of compact objects and the hypernova (or collapsar) scenarios are the most representative, being the collapsar model one of the most accepted nowadays. A natural consequence of the collapsar model is that the GRBs would trace the star formation rate (SFR) of their HGs. In this contributed paper we present preliminary results of the development of a Montecarlo-based model for hypernova event formation which is coupled to chemical-cosmological simulations, with the aim at studying the GRB relationship with the SFR cosmic history and the properties of their HGs in a hierarchical scenario.
