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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_18248039_v2012-May_n_p_Pellizza |
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todo:paper_18248039_v2012-May_n_p_Pellizza2023-10-03T16:33:04Z Chemical properties of long gamma-ray bursts progenitors in cosmological simulations Pellizza, L.J. Artale, M.C. Tissera, P.B. 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. CONF info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Pellizza, L.J. Artale, M.C. Tissera, P.B. 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. |
| format |
CONF |
| author |
Pellizza, L.J. Artale, M.C. Tissera, P.B. |
| author_facet |
Pellizza, L.J. Artale, M.C. Tissera, P.B. |
| author_sort |
Pellizza, L.J. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_18248039_v2012-May_n_p_Pellizza |
| work_keys_str_mv |
AT pellizzalj chemicalpropertiesoflonggammarayburstsprogenitorsincosmologicalsimulations AT artalemc chemicalpropertiesoflonggammarayburstsprogenitorsincosmologicalsimulations AT tisserapb chemicalpropertiesoflonggammarayburstsprogenitorsincosmologicalsimulations |
| _version_ |
1807320283367866368 |