Direct Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10  GeV/n to 2.2  TeV/n with the Calorimetric Electron Telescope on the International Space Station

Simple item page
dc.contributor.authorAdriani, O.
dc.contributor.authorAkaike, Y.
dc.contributor.authorAsano, K.
dc.contributor.authorAsaoka, Y.
dc.contributor.authorCannady, Nicholas
dc.contributor.authorHams, Thomas
dc.contributor.authorKrizmanic, John F.
dc.contributor.authorLink, J.
dc.contributor.authorSakai, Kenichi
dc.contributor.authorCALET Collaboration
dc.contributor.authoret al
dc.date.accessioned2022-08-09T18:01:16Z
dc.date.available2022-08-09T18:01:16Z
dc.date.issued2020-12-18
dc.descriptionAuthors: O. Adriani, Y. Akaike, K. Asano, Y. Asaoka, M. G. Bagliesi, 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, 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, J. Link, 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, F. Palma, P. Papini, B. F. Rauch, S. B. Ricciarini, K. Sakai, T. Sakamoto, M. Sasaki, Y. Shimizu, A. Shiomi, R. Sparvoli, P. Spillantini, F. Stolzi, S. Sugita, J. E. Suh, 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, and K. Yoshidaen_US
dc.description.abstractIn this paper, we present the measurement of the energy spectra of carbon and oxygen in cosmic rays based on observations with the Calorimetric Electron Telescope on the International Space Station from October 2015 to October 2019. Analysis, including the detailed assessment of systematic uncertainties, and results are reported. The energy spectra are measured in kinetic energy per nucleon from 10 GeV / n to 2.2 TeV / n with an all-calorimetric instrument with a total thickness corresponding to 1.3 nuclear interaction length. The observed carbon and oxygen fluxes show a spectral index change of ∼0.15 around 200 GeV / n established with a significance > 3σ. They have the same energy dependence with a constant C/O flux ratio 0.911±0.006 above 25 GeV / n. The spectral hardening is consistent with that measured by AMS-02, but the absolute normalization of the flux is about 27% lower, though in agreement with observations from previous experiments including the PAMELA spectrometer and the calorimetric balloon-borne experiment CREAM.en_US
dc.description.sponsorshipWe gratefully acknowledge JAXA’s contributions to the development of CALET and to the operations onboard the International Space Station. We also wish to express our sincere gratitude to Agenzia Spaziale Italiana (ASI) and NASA for their support of the CALET project. This work was supported in part by JSPS Grant-in-Aid for Scientific Research (S) No. 26220708 and No. 19H05608, JSPS Grant-in-Aid for Scientific Research (B) No. 17H02901, and by the MEXT-Supported Program for the Strategic Research Foundation at Private Universities (2011-2015) (No. S1101021) at Waseda University. The CALET effort in Italy is supported by ASI under agreement 2013-018-R.0 and its amendments. The CALET effort in the United States is supported by NASA through Grants No. NNX16AB99G, No. NNX16AC02G, and No. NNH14ZDA001N-APRA0075.en_US
dc.description.urihttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.251102en_US
dc.format.extent7 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2aabs-qphx
dc.identifier.citationAdriani, O. et al. "Direct Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10 GeV/n to 2.2 TeV/n with the Calorimetric Electron Telescope on the International Space Station." Phys. Rev. Lett. 125, no. 25 (18 December 2020). https://doi.org/10.1103/PhysRevLett.125.251102en_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.125.251102
dc.identifier.urihttp://hdl.handle.net/11603/25325
dc.language.isoen_USen_US
dc.publisherAPSen_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.titleDirect Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10  GeV/n to 2.2  TeV/n with the Calorimetric Electron Telescope on the International Space Stationen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0003-2916-6955en_US

Files

Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
PhysRevLett.125.251102.pdf
Size:
344.35 KB
Format:
Adobe Portable Document Format
Description:
Main Article
Download
Thumbnail Image
Name:
SM.pdf
Size:
551.27 KB
Format:
Adobe Portable Document Format
Description:
Supplement
Download
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