Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region

The center of the our Galaxy is a region where very energetic phenomena take place. In particular, powerful cosmic ray sources can be located in that region. The cosmic rays accelerated in these sources may interact with ambient protons and/or low energy photons producing gamma rays and neutrinos. T...

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Detalles Bibliográficos
Publicado: 2014
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v89_n2_p_Supanitsky
http://hdl.handle.net/20.500.12110/paper_15507998_v89_n2_p_Supanitsky
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_15507998_v89_n2_p_Supanitsky
record_format dspace
spelling paper:paper_15507998_v89_n2_p_Supanitsky2023-06-08T16:22:43Z Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region The center of the our Galaxy is a region where very energetic phenomena take place. In particular, powerful cosmic ray sources can be located in that region. The cosmic rays accelerated in these sources may interact with ambient protons and/or low energy photons producing gamma rays and neutrinos. The observation of these two types of secondary particles can be very useful for the identification of the cosmic ray sources and for the understanding of the physical processes occurring during acceleration. Motivated by the excess in the neutrino spectrum recently reported by the IceCube Collaboration, we study in detail the shape of the gamma ray and neutrino spectra originating from the interaction of cosmic ray protons with ambient protons for sources located in the Galactic Center region. We consider different models for proton acceleration and study the impact on the gamma ray and neutrino spectra. We also discuss the possibility to constrain and even identify a particular neutrino source by using the information given by the gamma ray spectrum, taking advantage of the modification of the spectral shape caused by the interaction of the gamma rays with the photons of the radiation field present in the interstellar medium, which strongly depends on the source distance. © 2014 American Physical Society. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v89_n2_p_Supanitsky http://hdl.handle.net/20.500.12110/paper_15507998_v89_n2_p_Supanitsky
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The center of the our Galaxy is a region where very energetic phenomena take place. In particular, powerful cosmic ray sources can be located in that region. The cosmic rays accelerated in these sources may interact with ambient protons and/or low energy photons producing gamma rays and neutrinos. The observation of these two types of secondary particles can be very useful for the identification of the cosmic ray sources and for the understanding of the physical processes occurring during acceleration. Motivated by the excess in the neutrino spectrum recently reported by the IceCube Collaboration, we study in detail the shape of the gamma ray and neutrino spectra originating from the interaction of cosmic ray protons with ambient protons for sources located in the Galactic Center region. We consider different models for proton acceleration and study the impact on the gamma ray and neutrino spectra. We also discuss the possibility to constrain and even identify a particular neutrino source by using the information given by the gamma ray spectrum, taking advantage of the modification of the spectral shape caused by the interaction of the gamma rays with the photons of the radiation field present in the interstellar medium, which strongly depends on the source distance. © 2014 American Physical Society.
title Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
spellingShingle Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
title_short Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
title_full Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
title_fullStr Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
title_full_unstemmed Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
title_sort gamma rays and neutrinos from a cosmic ray source in the galactic center region
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v89_n2_p_Supanitsky
http://hdl.handle.net/20.500.12110/paper_15507998_v89_n2_p_Supanitsky
_version_ 1768544465444667392

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