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Título del libro: Proceedings Of The 33rd International Cosmic Rays Conference, Icrc 2013
Título del capítulo: A reevaluation of the neutron emission from the solar flare of September 07, 2005, detected by the Solar Neutron Telescope at Sierra Negra, México

Autores UNAM:
LUIS XAVIER GONZALEZ MENDEZ; JOSE FRANCISCO VALDES GALICIA; OCTAVIO FELIX MUSALEM CLEMENTE; ALEJANDRO HURTADO PIZANO;
Autores externos:

Idioma:
Inglés
Año de publicación:
2013
Palabras clave:

Cosmology; Germanium compounds; Neutrons; Telescopes; Energy depositions; Energy spectra; Flare; GeV-protons; High-energy neutron; Solar flare; Solar neutrons; Spectral indices; Cosmic rays


Resumen:

The X17.0 solar flare of September 07, 2005 released high-energy neutrons that were detected by the Solar Neutron Telescope (SNT) at Sierra Negra, México. In three separate and independent studies of this solar neutron event [1, 2, 3], the energy spectra was calculated and fitted to a power law. In this paper, we show an alternative analysis, based on improved numerical simulations of the detector using GEANT4 [4], and a different technique to process the SNT data. The results indicate that the spectral index which best fits the neutron flux is around 3, in agreement with previous works. Based on the numerically calculated energy deposition by the solar neutrons on the SNT [5], we confirm that the neutrons detected had at least 1 GeV energy, this implies that the solar flare most probably produced 10 GeV protons; these could not be observed at Earth as the source flare was in the east limb. © 2013 Sociedade Brasileira de Fisica. All Rights Reserved.


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