Quiescent Solar Gamma-ray Observations with CALET on the ISS

Simple item page
dc.contributor.authorCannady, Nicholas
dc.contributor.authorHams, Thomas
dc.contributor.authorKrizmanic, John F.
dc.contributor.authorSakai, Kenichi
dc.contributor.authorCALET Collaboration
dc.contributor.authoret al
dc.date.accessioned2022-08-11T20:17:00Z
dc.date.available2022-08-11T20:17:00Z
dc.date.issued2020-04-18
dc.descriptionPresented at APS April Meeting 2020 on April 18, 2020, Washington D.C.en_US
dc.descriptionCALET Collaboration Authors: O. Adriani, Y. Akaike, K. Asano, Y. Asaoka, E. Berti, G. Bigongiari, W. R. Binns, M. Bongi, P. Brogi, A. Bruno, J. H. Buckley, N. Cannady, G. Castellini, C. Checchia, M. L. Cherry, G. Collazuol, K. Ebisawa, A. W. Ficklin, H. Fuke, S. Gonzi, T. G. Guzik, T. Hams, K. Hibino, M. Ichimura, K. Ioka, W. Ishizaki, M. H. Israel, K. Kasahara, J. Kataoka, R. Kataoka, Y. Katayose, C. Kato, N. Kawanaka, Y. Kawakubo, K. Kobayashi, K. Kohri, H. S. Krawczynski, J. F. Krizmanic, P. Maestro, P. S. Marrocchesi, A. M. Messineo, J.W. Mitchell, S. Miyake, A. A. Moiseev, M. Mori, N. Mori, H. M. Motz, K. Munakata, S. Nakahira, J. Nishimura, G. A. de Nolfo, S. Okuno, J. F. Ormes, N. Ospina, S. Ozawa, L. Pacini, P. Papini, B. F. Rauch, S. B. Ricciarini, K. Sakai, T. Sakamoto, M. Sasaki, Y. Shimizu, A. Shiomi, P. Spillantini, F. Stolzi, S. Sugita, A. Sulaj, M. Takita, T. Tamura, T. Terasawa, S. Torii, Y. Tsunesada, Y. Uchihori, E. Vannuccini, J. P. Wefel, K. Yamaoka, S. Yanagita, A. Yoshida, K. Yoshida, and W. V. Zober
dc.description.abstractQuiescent Solar Gamma-Ray Observations with CALET on the ISS NICHOLAS CANNADY, Univ of Maryland-Baltimore County, CALET COLLABORATION — The Calorimetric Electron Telescope (CALET) was launched to the International Space Station in August 2015 and has continuously taken data since shortly thereafter. Recent results include measurement of the spectra of cosmic-ray electrons+positrons to 4.8 TeV and protons to 10 TeV, with ongoing analyses of nuclear spectra, ratios, and ultra-heavy abundances. The calorimeter is sensitive to gamma rays from 1 GeV to beyond 1 TeV, and the corresponding instrument response functions have been determined through simulations and comparison with flight data. We present CALET observations of gamma-ray emission from the quiescent Sun over the period November 2015 – October 2019. Previous observations with the Fermi Large Area Telescope (LAT) indicate a hard spectrum in excess of predictions. Recent results with LAT extend this measurement to higher energies, revealing emission beyond 100 GeV, and indicate an increase in the flux at solar minimum and the presence of a “dip” feature in the spectrum at energies of 30 – 50 GeV. In this work, we demonstrate general consistency with the hard, intense spectrum detected by the LAT at energies up to tens of GeV. Furthermore, we investigate the presence of the time dependence of the flux and the unexpected spectral feature.en_US
dc.description.urihttps://meetings.aps.org/Meeting/APR20/Session/B09.4en_US
dc.format.extent21 pagesen_US
dc.genrepresentations (communicative events)en_US
dc.genreconference papers and proceedingsen_US
dc.identifierdoi:10.13016/m2dgam-jsdl
dc.identifier.urihttp://hdl.handle.net/11603/25364
dc.language.isoen_USen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.subjectCalorimetric Electron Telescope (CALET)en_US
dc.subjectmeasurement of the spectra of cosmic-ray electrons+positronsen_US
dc.subjectCALET observations of gamma-ray emissionen_US
dc.subjectInternational Space Station
dc.titleQuiescent Solar Gamma-ray Observations with CALET on the ISSen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0003-2916-6955en_US

Files

License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.56 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection