Search for gamma-ray emission from star-forming galaxies with Fermi LAT

Recent studies have found a positive correlation between the star-formation rate of galaxies and their gamma-ray luminosity. Galaxies with a high star-formation rate are expected to produce a large amount of high-energy cosmic rays, which emit gammarays when interacting with the interstellar medium...

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Detalles Bibliográficos
Autores: Rojas Bravo, César, Araya Arguedas, Miguel
Tipo de recurso: artículo
Fecha de publicación:2016
País:Costa Rica
Institución:Universidad de Costa Rica
Repositorio:Kérwá
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/75171
Acceso en línea:https://academic.oup.com/mnras/article/463/1/1068/2590004
https://hdl.handle.net/10669/75171
Access Level:acceso abierto
Palabra clave:Cosmic rays
Galaxies: starburst
Gamma-rays: galaxies
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dc.title.es_ES.fl_str_mv Search for gamma-ray emission from star-forming galaxies with Fermi LAT
title Search for gamma-ray emission from star-forming galaxies with Fermi LAT
spellingShingle Search for gamma-ray emission from star-forming galaxies with Fermi LAT
Rojas Bravo, César
Cosmic rays
Galaxies: starburst
Gamma-rays: galaxies
title_short Search for gamma-ray emission from star-forming galaxies with Fermi LAT
title_full Search for gamma-ray emission from star-forming galaxies with Fermi LAT
title_fullStr Search for gamma-ray emission from star-forming galaxies with Fermi LAT
title_full_unstemmed Search for gamma-ray emission from star-forming galaxies with Fermi LAT
title_sort Search for gamma-ray emission from star-forming galaxies with Fermi LAT
dc.creator.none.fl_str_mv Rojas Bravo, César
Araya Arguedas, Miguel
author Rojas Bravo, César
author_facet Rojas Bravo, César
Araya Arguedas, Miguel
author_role author
author2 Araya Arguedas, Miguel
author2_role author
dc.subject.es_ES.fl_str_mv Cosmic rays
Galaxies: starburst
Gamma-rays: galaxies
topic Cosmic rays
Galaxies: starburst
Gamma-rays: galaxies
description Recent studies have found a positive correlation between the star-formation rate of galaxies and their gamma-ray luminosity. Galaxies with a high star-formation rate are expected to produce a large amount of high-energy cosmic rays, which emit gammarays when interacting with the interstellar medium and radiation fields. We search for gamma-ray emission from a sample of galaxies within and beyond the Local Group with data from the LAT instrument onboard the Fermi satellite. We exclude recently detected galaxies (NGC 253, M82, NGC 4945, NGC 1068, NGC 2146, Arp 220) and use seven years of cumulative “Pass 8” data from the LAT in the 100 MeV to 100 GeV range. No new detections are seen in the data and upper limits for the gammaray fluxes are calculated. The correlation between gamma-ray luminosity and infrared luminosity for galaxies obtained using our new upper limits is in agreement with a previously published correlation, but the new upper limits imply that some galaxies are not as efficient gamma-ray emitters as previously thought.
publishDate 2016
dc.date.issued.none.fl_str_mv 2016-08
dc.date.accessioned.none.fl_str_mv 2018-07-06T16:52:13Z
dc.date.available.none.fl_str_mv 2018-07-06T16:52:13Z
dc.type.none.fl_str_mv artículo original
http://purl.org/coar/resource_type/c_2df8fbb1
info:eu-repo/semantics/article
format article
dc.identifier.citation.none.fl_str_mv https://academic.oup.com/mnras/article/463/1/1068/2590004
dc.identifier.issn.none.fl_str_mv 1365-2966
0035-8711
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10669/75171
dc.identifier.doi.none.fl_str_mv 10.1093/mnras/stw2059
url https://academic.oup.com/mnras/article/463/1/1068/2590004
https://hdl.handle.net/10669/75171
identifier_str_mv 1365-2966
0035-8711
10.1093/mnras/stw2059
dc.language.iso.es_ES.fl_str_mv en_US
language_invalid_str_mv en_US
dc.rights.none.fl_str_mv acceso abierto
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rights_invalid_str_mv acceso abierto
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eu_rights_str_mv openAccess
dc.source.es_ES.fl_str_mv Monthly notices of the royal astronomical society, Vol 463(1), pp 1068-1073
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instname:Universidad de Costa Rica
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spelling Rojas Bravo, César1342972c-13c6-4877-bff9-0f5eab9f5c14Araya Arguedas, Miguel7978b61b-ff09-4cb0-aa03-06f05d7360356002018-07-06T16:52:13Z2018-07-06T16:52:13Z2016-08https://academic.oup.com/mnras/article/463/1/1068/25900041365-29660035-8711https://hdl.handle.net/10669/7517110.1093/mnras/stw2059Recent studies have found a positive correlation between the star-formation rate of galaxies and their gamma-ray luminosity. Galaxies with a high star-formation rate are expected to produce a large amount of high-energy cosmic rays, which emit gammarays when interacting with the interstellar medium and radiation fields. We search for gamma-ray emission from a sample of galaxies within and beyond the Local Group with data from the LAT instrument onboard the Fermi satellite. We exclude recently detected galaxies (NGC 253, M82, NGC 4945, NGC 1068, NGC 2146, Arp 220) and use seven years of cumulative “Pass 8” data from the LAT in the 100 MeV to 100 GeV range. No new detections are seen in the data and upper limits for the gammaray fluxes are calculated. 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