Chemical properties of long gamma-ray bursts progenitors in cosmological simulations

In this work, we investigate the chemical dependence of the progenitors of long gamma-ray bursts. Using hydrodynamical cosmological simulations consistent with the concordance Λ-CDM model which include star formation, chemical enrichment and supernova feedback in a self-consistent way, and assuming...

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Detalles Bibliográficos
Publicado:	2012
Materias:	Chemical properties Stars Energy Observatory Gamma ray bursts Luminosity functions Massive stars Metallicities Monte carlo schemes Spectral peak energies Star formations Gamma rays
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18248039_v2012-May_n_p_Pellizza http://hdl.handle.net/20.500.12110/paper_18248039_v2012-May_n_p_Pellizza
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_18248039_v2012-May_n_p_Pellizza
record_format	dspace
spelling	paper:paper_18248039_v2012-May_n_p_Pellizza2023-06-08T16:29:16Z Chemical properties of long gamma-ray bursts progenitors in cosmological simulations Chemical properties Stars Energy Observatory Gamma ray bursts Luminosity functions Massive stars Metallicities Monte carlo schemes Spectral peak energies Star formations Gamma rays In this work, we investigate the chemical dependence of the progenitors of long gamma-ray bursts. Using hydrodynamical cosmological simulations consistent with the concordance Λ-CDM model which include star formation, chemical enrichment and supernova feedback in a self-consistent way, and assuming that these bursts are produced by a subset of massive stars (possibly with distinct chemical properties), we compute the LGRB rate at different redshifts. Introducing prescriptions for their peak isotropic luminosity function and intrinsic spectrum, and using a Monte Carlo scheme to model their detectability by different high-energy observatories, we compute the distributions of the burst observables (peak flux, spectral peak energy) and compare them to actual data. Our preliminary results show that a possible chemical dependence for LGRBs progenitors cannot be ruled out, but it might be more complex than the usually assumed metallicity cut-off. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18248039_v2012-May_n_p_Pellizza http://hdl.handle.net/20.500.12110/paper_18248039_v2012-May_n_p_Pellizza
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chemical properties Stars Energy Observatory Gamma ray bursts Luminosity functions Massive stars Metallicities Monte carlo schemes Spectral peak energies Star formations Gamma rays
spellingShingle	Chemical properties Stars Energy Observatory Gamma ray bursts Luminosity functions Massive stars Metallicities Monte carlo schemes Spectral peak energies Star formations Gamma rays Chemical properties of long gamma-ray bursts progenitors in cosmological simulations
topic_facet	Chemical properties Stars Energy Observatory Gamma ray bursts Luminosity functions Massive stars Metallicities Monte carlo schemes Spectral peak energies Star formations Gamma rays
description	In this work, we investigate the chemical dependence of the progenitors of long gamma-ray bursts. Using hydrodynamical cosmological simulations consistent with the concordance Λ-CDM model which include star formation, chemical enrichment and supernova feedback in a self-consistent way, and assuming that these bursts are produced by a subset of massive stars (possibly with distinct chemical properties), we compute the LGRB rate at different redshifts. Introducing prescriptions for their peak isotropic luminosity function and intrinsic spectrum, and using a Monte Carlo scheme to model their detectability by different high-energy observatories, we compute the distributions of the burst observables (peak flux, spectral peak energy) and compare them to actual data. Our preliminary results show that a possible chemical dependence for LGRBs progenitors cannot be ruled out, but it might be more complex than the usually assumed metallicity cut-off. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
title	Chemical properties of long gamma-ray bursts progenitors in cosmological simulations
title_short	Chemical properties of long gamma-ray bursts progenitors in cosmological simulations
title_full	Chemical properties of long gamma-ray bursts progenitors in cosmological simulations
title_fullStr	Chemical properties of long gamma-ray bursts progenitors in cosmological simulations
title_full_unstemmed	Chemical properties of long gamma-ray bursts progenitors in cosmological simulations
title_sort	chemical properties of long gamma-ray bursts progenitors in cosmological simulations
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18248039_v2012-May_n_p_Pellizza http://hdl.handle.net/20.500.12110/paper_18248039_v2012-May_n_p_Pellizza
_version_	1768542809572245504

Chemical properties of long gamma-ray bursts progenitors in cosmological simulations

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