Gamma-Ray Observations with CALET: Exposure Map, Response Functions, and Simulated Results

dc.contributor.authorCannady, Nicholas
dc.contributor.authorCherry, Michael L.
dc.contributor.authorCALET Collaboration
dc.descriptionThe 34th International Cosmic Ray Conference; The Hague, The Netherlands; 30 July - 6 August, 2015en_US
dc.description.abstractThe CALorimetric Electron Telescope (CALET) is a space-borne cosmic ray instrument planned for installation on the JEM-EF platform on the International Space Station (ISS) in 2015. The CALET collaboration is a Japan-led international team involving researchers in Italy and the U.S. In addition to precise measurement of the cosmic ray electron and nuclei spectra, the CALET calorimeter will be capable of gamma-ray observations in the GeV to tens of TeV energy range. This paper presents a study of the expected gamma-ray signal measured by CALET in the first year on orbit. The ISS zenith pointing is simulated at a time resolution of 1 second in order to estimate the exposure map on the sky. The instrument response functions and simulated results of gamma-ray/electron separation for the calorimeter are discussed and used to estimate the expected point source and galactic diffuse signals in the energy range ~10 GeV - ~500 GeV based on known fluxes measured by Fermi-LAT.en_US
dc.description.sponsorshipThe CALET experiment is supported by NASA in the United States, JAXA in Japan, and ASI in Italy. Portions of this research were conducted with high performance computing resources provided by Louisiana State University ( AGI Satellite Toolkit (STK) software was used in the generation of some results in this paper. The authors also appreciate the efforts of the Fermi-LAT team in development of the background models used. Reference was made to the University of Chicago TeVCat catalog for collections of source-related information. Financial support for the lead author partially provided by a Louisiana State University Board of Regents Graduate Fellowship.en_US
dc.format.extent8 pagesen_US
dc.genreconference papers and proceedingsen_US
dc.identifier.citationCannady, Nicholas W., and Michael L. Cherry. “Gamma-Ray Observations with CALET: Exposure Map, Response Functions, and Simulated Results.” In Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 236:995. SISSA Medialab, 2016.
dc.publisherProceedings of Scienceen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Physics Department
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.en_US
dc.rightsAttribution-NonCommercial-ShareAlike 1.0 Generic (CC BY-NC-SA 1.0)*
dc.titleGamma-Ray Observations with CALET: Exposure Map, Response Functions, and Simulated Resultsen_US


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