High-energy antiprotons from old supernova remnants

A recently proposed model (arXiv:0903.2794) explains the rise in energy of the positron fraction measured by the PAMELA satellite in terms of hadronic production of positrons in aged supernova remnants, and acceleration therein. Here we present a preliminary calculation of the anti-proton flux produ...

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Detalles Bibliográficos
Autores principales: Blasi, Pasquale, Serpico, Pasquale D.
Lenguaje:eng
Publicado: 2009
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.103.081103
http://cds.cern.ch/record/1171118
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author Blasi, Pasquale
Serpico, Pasquale D.
author_facet Blasi, Pasquale
Serpico, Pasquale D.
author_sort Blasi, Pasquale
collection CERN
description A recently proposed model (arXiv:0903.2794) explains the rise in energy of the positron fraction measured by the PAMELA satellite in terms of hadronic production of positrons in aged supernova remnants, and acceleration therein. Here we present a preliminary calculation of the anti-proton flux produced by the same mechanism. While the model is consistent with present data, a rise of the antiproton to proton ratio is predicted at high energy, which strikingly distinguishes this scenario from other astrophysical explanations of the positron fraction (like pulsars). We briefly discuss important implications for Dark Matter searches via antimatter.
id cern-1171118
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2009
record_format invenio
spelling cern-11711182023-03-14T19:17:46Zdoi:10.1103/PhysRevLett.103.081103http://cds.cern.ch/record/1171118engBlasi, PasqualeSerpico, Pasquale D.High-energy antiprotons from old supernova remnantsAstrophysics and AstronomyA recently proposed model (arXiv:0903.2794) explains the rise in energy of the positron fraction measured by the PAMELA satellite in terms of hadronic production of positrons in aged supernova remnants, and acceleration therein. Here we present a preliminary calculation of the anti-proton flux produced by the same mechanism. While the model is consistent with present data, a rise of the antiproton to proton ratio is predicted at high energy, which strikingly distinguishes this scenario from other astrophysical explanations of the positron fraction (like pulsars). We briefly discuss important implications for Dark Matter searches via antimatter.A recently proposed model (arXiv:0903.2794) explains the rise in energy of the positron fraction measured by the PAMELA satellite in terms of hadronic production of positrons in aged supernova remnants, and acceleration therein. Here we present a preliminary calculation of the anti-proton flux produced by the same mechanism. While the model is consistent with present data, a rise of the antiproton to proton ratio is predicted at high energy, which strikingly distinguishes this scenario from other astrophysical explanations of the positron fraction (like pulsars). We briefly discuss important implications for Dark Matter searches via antimatter.arXiv:0904.0871oai:cds.cern.ch:11711182009-04-07
spellingShingle Astrophysics and Astronomy
Blasi, Pasquale
Serpico, Pasquale D.
High-energy antiprotons from old supernova remnants
title High-energy antiprotons from old supernova remnants
title_full High-energy antiprotons from old supernova remnants
title_fullStr High-energy antiprotons from old supernova remnants
title_full_unstemmed High-energy antiprotons from old supernova remnants
title_short High-energy antiprotons from old supernova remnants
title_sort high-energy antiprotons from old supernova remnants
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1103/PhysRevLett.103.081103
http://cds.cern.ch/record/1171118
work_keys_str_mv AT blasipasquale highenergyantiprotonsfromoldsupernovaremnants
AT serpicopasqualed highenergyantiprotonsfromoldsupernovaremnants

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