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Author González, L. X. ♦ Valdés-Galicia, J. F. ♦ Musalem, O. ♦ Hurtado, A. ♦ Sánchez, F. ♦ Muraki, Y. ♦ Sako, T. ♦ Matsubara, Y. ♦ Nagai, Y. ♦ Watanabe, K. ♦ Shibata, S. ♦ Sakai, T.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ♦ COMPUTERIZED SIMULATION ♦ ENERGY ABSORPTION ♦ ENERGY LOSSES ♦ ENERGY SPECTRA ♦ GEV RANGE ♦ NEUTRON EMISSION ♦ NEUTRON FLUX ♦ SOLAR FLARES ♦ SOLAR NEUTRONS ♦ SOLAR PROTONS ♦ SUN ♦ TELESCOPES
Abstract The X17.0 solar flare of 2005 September 7 released high-energy neutrons that were detected by the Solar Neutron Telescope (SNT) at Sierra Negra, Mexico. In three separate and independent studies of this solar neutron event, several of its unique characteristics were studied; in particular, a power-law energy spectra was estimated. In this paper, we present an alternative analysis, based on improved numerical simulations of the detector using GEANT4, and a different technique for processing the SNT data. The results indicate that the spectral index that best fits the neutron flux is around 3, in agreement with previous works. Based on the numerically calculated neutron energy deposition on the SNT, we confirm that the detected neutrons might have reached an energy of 1 GeV, which implies that 10 GeV protons were probably produced; these could not be observed at Earth, as their parent flare was an east limb event.
ISSN 0004637X
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-12-01
Publisher Place United States
Journal Astrophysical Journal
Volume Number 814
Issue Number 2


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