Investigating the Vela SNR’s Emission of Electron Cosmic Rays with CALET at the International Space Station

CALET Collaboration

Investigating the Vela SNR’s Emission of Electron Cosmic Rays with CALET at the International Space Station

CALET Collaboration

Research output: Contribution to journal › Conference article › peer-review

Abstract

The ISS-based Calorimetric Electron Telescope (CALET) is directly measuring the energy spectrum of electron+positron cosmic rays up to 20 TeV. Cosmic-ray electrons of TeV region energy are limited by energy loss to a propagation range of about 1 kpc, therefore the expected sources are a few nearby supernova remnants (SNR), with the Vela SNR dominating the spectrum [1]. The latest spectrum measured by CALET [2] in combination with the positron-only flux published by AMS-02 [3] is fitted with a comprehensive model including nearby pulsars as the source of the positron excess. This model is extended to the TeV region by addition of the flux from the Vela SNR as calculated with DRAGON, with the integrated energy emitted in electron cosmic rays by the SNR as a variable scale factor. Exploring various scenarios for the time and energy dependence of the cosmic-ray release from Vela, under varied propagation conditions, best-fitting interpretations of the spectrum and upper limits on the emission of cosmic-ray electrons by Vela have been derived.

Original language	English
Article number	100
Journal	Proceedings of Science
Volume	395
Publication status	Published - 2022 Mar 18
Event	37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany Duration: 2021 Jul 12 → 2021 Jul 23

ASJC Scopus subject areas

General

Cite this

@article{7e47cb8af6a844a19216a0dec8fae56b,

title = "Investigating the Vela SNR{\textquoteright}s Emission of Electron Cosmic Rays with CALET at the International Space Station",

abstract = "The ISS-based Calorimetric Electron Telescope (CALET) is directly measuring the energy spectrum of electron+positron cosmic rays up to 20 TeV. Cosmic-ray electrons of TeV region energy are limited by energy loss to a propagation range of about 1 kpc, therefore the expected sources are a few nearby supernova remnants (SNR), with the Vela SNR dominating the spectrum [1]. The latest spectrum measured by CALET [2] in combination with the positron-only flux published by AMS-02 [3] is fitted with a comprehensive model including nearby pulsars as the source of the positron excess. This model is extended to the TeV region by addition of the flux from the Vela SNR as calculated with DRAGON, with the integrated energy emitted in electron cosmic rays by the SNR as a variable scale factor. Exploring various scenarios for the time and energy dependence of the cosmic-ray release from Vela, under varied propagation conditions, best-fitting interpretations of the spectrum and upper limits on the emission of cosmic-ray electrons by Vela have been derived.",

author = "{CALET Collaboration} and Holger Motz and O. Adriani and Y. Akaike and K. Asano and Y. Asaoka and E. Berti and G. Bigongiari and Binns, {W. R.} and M. Bongi and P. Brogi and A. Bruno and Buckley, {J. H.} and N. Cannady and G. Castellini and C. Checchia and Cherry, {M. L.} and G. Collazuol and K. Ebisawa and Ficklin, {A. W.} and H. Fuke and S. Gonzi and Guzik, {T. G.} and T. Hams and K. Hibino and M. Ichimura and K. Ioka and W. Ishizaki and Israel, {M. H.} and K. Kasahara and J. Kataoka and R. Kataoka and Y. Katayose and C. Kato and N. Kawanaka and Y. Kawakubo and K. Kobayashi and K. Kohri and Krawczynski, {H. S.} and Krizmanic, {J. F.} and P. Maestro and Marrocchesi, {P. S.} and Messineo, {A. M.} and Mitchell, {J. W.} and S. Miyake and Moiseev, {A. A.} and M. Mori and N. Mori and Motz, {H. M.} and K. Munakata and K. Yoshida",

note = "Funding Information: This work was supported by JSPS KAKENHI Grant Number JP21K03604. Publisher Copyright: {\textcopyright} Copyright owned by the author(s).; 37th International Cosmic Ray Conference, ICRC 2021 ; Conference date: 12-07-2021 Through 23-07-2021",

year = "2022",

month = mar,

day = "18",

language = "English",

volume = "395",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Investigating the Vela SNR’s Emission of Electron Cosmic Rays with CALET at the International Space Station

AU - CALET Collaboration

AU - Motz, Holger

AU - Adriani, O.

AU - Akaike, Y.

AU - Asano, K.

AU - Asaoka, Y.

AU - Berti, E.

AU - Bigongiari, G.

AU - Binns, W. R.

AU - Bongi, M.

AU - Brogi, P.

AU - Bruno, A.

AU - Buckley, J. H.

AU - Cannady, N.

AU - Castellini, G.

AU - Checchia, C.

AU - Cherry, M. L.

AU - Collazuol, G.

AU - Ebisawa, K.

AU - Ficklin, A. W.

AU - Fuke, H.

AU - Gonzi, S.

AU - Guzik, T. G.

AU - Hams, T.

AU - Hibino, K.

AU - Ichimura, M.

AU - Ioka, K.

AU - Ishizaki, W.

AU - Israel, M. H.

AU - Kasahara, K.

AU - Kataoka, J.

AU - Kataoka, R.

AU - Katayose, Y.

AU - Kato, C.

AU - Kawanaka, N.

AU - Kawakubo, Y.

AU - Kobayashi, K.

AU - Kohri, K.

AU - Krawczynski, H. S.

AU - Krizmanic, J. F.

AU - Maestro, P.

AU - Marrocchesi, P. S.

AU - Messineo, A. M.

AU - Mitchell, J. W.

AU - Miyake, S.

AU - Moiseev, A. A.

AU - Mori, M.

AU - Mori, N.

AU - Motz, H. M.

AU - Munakata, K.

AU - Yoshida, K.

N1 - Funding Information: This work was supported by JSPS KAKENHI Grant Number JP21K03604. Publisher Copyright: © Copyright owned by the author(s).

PY - 2022/3/18

Y1 - 2022/3/18

N2 - The ISS-based Calorimetric Electron Telescope (CALET) is directly measuring the energy spectrum of electron+positron cosmic rays up to 20 TeV. Cosmic-ray electrons of TeV region energy are limited by energy loss to a propagation range of about 1 kpc, therefore the expected sources are a few nearby supernova remnants (SNR), with the Vela SNR dominating the spectrum [1]. The latest spectrum measured by CALET [2] in combination with the positron-only flux published by AMS-02 [3] is fitted with a comprehensive model including nearby pulsars as the source of the positron excess. This model is extended to the TeV region by addition of the flux from the Vela SNR as calculated with DRAGON, with the integrated energy emitted in electron cosmic rays by the SNR as a variable scale factor. Exploring various scenarios for the time and energy dependence of the cosmic-ray release from Vela, under varied propagation conditions, best-fitting interpretations of the spectrum and upper limits on the emission of cosmic-ray electrons by Vela have been derived.

AB - The ISS-based Calorimetric Electron Telescope (CALET) is directly measuring the energy spectrum of electron+positron cosmic rays up to 20 TeV. Cosmic-ray electrons of TeV region energy are limited by energy loss to a propagation range of about 1 kpc, therefore the expected sources are a few nearby supernova remnants (SNR), with the Vela SNR dominating the spectrum [1]. The latest spectrum measured by CALET [2] in combination with the positron-only flux published by AMS-02 [3] is fitted with a comprehensive model including nearby pulsars as the source of the positron excess. This model is extended to the TeV region by addition of the flux from the Vela SNR as calculated with DRAGON, with the integrated energy emitted in electron cosmic rays by the SNR as a variable scale factor. Exploring various scenarios for the time and energy dependence of the cosmic-ray release from Vela, under varied propagation conditions, best-fitting interpretations of the spectrum and upper limits on the emission of cosmic-ray electrons by Vela have been derived.

UR - http://www.scopus.com/inward/record.url?scp=85117645815&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85117645815&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85117645815

SN - 1824-8039

VL - 395

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 100

T2 - 37th International Cosmic Ray Conference, ICRC 2021

Y2 - 12 July 2021 through 23 July 2021

ER -

Investigating the Vela SNR’s Emission of Electron Cosmic Rays with CALET at the International Space Station

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this