MEASUREMENTS of COSMIC-RAY PROTON and HELIUM SPECTRA from the BESS-POLAR LONG-DURATION BALLOON FLIGHTS over ANTARCTICA

K. Abe; H. Fuke; S. Haino; T. Hams; M. Hasegawa; A. Horikoshi; A. Itazaki; K. C. Kim; T. Kumazawa; A. Kusumoto; M. H. Lee; Y. Makida; S. Matsuda; Y. Matsukawa; K. Matsumoto; J. W. Mitchell; Z. Myers; J. Nishimura; M. Nozaki; R. Orito; J. F. Ormes; N. Picot-Clemente; K. Sakai; M. Sasaki; E. S. Seo; Y. Shikaze; R. Shinoda; R. E. Streitmatter; J. Suzuki; Y. Takasugi; K. Takeuchi; K. Tanaka; N. Thakur; T. Yamagami; A. Yamamoto; T. Yoshida; K. Yoshimura

doi:10.3847/0004-637X/822/2/65

MEASUREMENTS of COSMIC-RAY PROTON and HELIUM SPECTRA from the BESS-POLAR LONG-DURATION BALLOON FLIGHTS over ANTARCTICA

K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa, A. Horikoshi, A. Itazaki, K. C. Kim, T. Kumazawa, A. Kusumoto, M. H. Lee, Y. Makida, S. Matsuda, Y. Matsukawa, K. Matsumoto, J. W. Mitchell, Z. Myers, J. Nishimura, M. Nozaki, R. OritoJ. F. Ormes, N. Picot-Clemente, K. Sakai, M. Sasaki, E. S. Seo, Y. Shikaze, R. Shinoda, R. E. Streitmatter, J. Suzuki, Y. Takasugi, K. Takeuchi, K. Tanaka, N. Thakur, T. Yamagami, A. Yamamoto, T. Yoshida, K. Yoshimura

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

The BESS-Polar Collaboration measured the energy spectra of cosmic-ray protons and helium during two long-duration balloon flights over Antarctica in 2004 December and 2007 December at substantially different levels of solar modulation. Proton and helium spectra probe the origin and propagation history of cosmic rays in the galaxy, and are essential to calculations of the expected spectra of cosmic-ray antiprotons, positrons, and electrons from interactions of primary cosmic-ray nuclei with the interstellar gas, and to calculations of atmospheric muons and neutrinos. We report absolute spectra at the top of the atmosphere for cosmic-ray protons in the kinetic energy range 0.2-160 GeV and helium nuclei in the range 0.15-80 GeV/nucleon. The corresponding magnetic-rigidity ranges are 0.6-160 GV for protons and 1.1-160 GV for helium. These spectra are compared to measurements from previous BESS flights and from ATIC-2, PAMELA, and AMS-02. We also report the ratio of the proton and helium fluxes from 1.1 to 160 GV and compare this to the ratios from PAMELA and AMS-02.

Original language	English
Article number	65
Journal	Astrophysical Journal
Volume	822
Issue number	2
DOIs	https://doi.org/10.3847/0004-637X/822/2/65
Publication status	Published - May 10 2016

Keywords

astroparticle physics
cosmic rays

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.3847/0004-637X/822/2/65

Cite this

Abe, K., Fuke, H., Haino, S., Hams, T., Hasegawa, M., Horikoshi, A., Itazaki, A., Kim, K. C., Kumazawa, T., Kusumoto, A., Lee, M. H., Makida, Y., Matsuda, S., Matsukawa, Y., Matsumoto, K., Mitchell, J. W., Myers, Z., Nishimura, J., Nozaki, M., ... Yoshimura, K. (2016). MEASUREMENTS of COSMIC-RAY PROTON and HELIUM SPECTRA from the BESS-POLAR LONG-DURATION BALLOON FLIGHTS over ANTARCTICA. Astrophysical Journal, 822(2), Article 65. https://doi.org/10.3847/0004-637X/822/2/65

Abe, K, Fuke, H, Haino, S, Hams, T, Hasegawa, M, Horikoshi, A, Itazaki, A, Kim, KC, Kumazawa, T, Kusumoto, A, Lee, MH, Makida, Y, Matsuda, S, Matsukawa, Y, Matsumoto, K, Mitchell, JW, Myers, Z, Nishimura, J, Nozaki, M, Orito, R, Ormes, JF, Picot-Clemente, N, Sakai, K, Sasaki, M, Seo, ES, Shikaze, Y, Shinoda, R, Streitmatter, RE, Suzuki, J, Takasugi, Y, Takeuchi, K, Tanaka, K, Thakur, N, Yamagami, T, Yamamoto, A, Yoshida, T & Yoshimura, K 2016, 'MEASUREMENTS of COSMIC-RAY PROTON and HELIUM SPECTRA from the BESS-POLAR LONG-DURATION BALLOON FLIGHTS over ANTARCTICA', Astrophysical Journal, vol. 822, no. 2, 65. https://doi.org/10.3847/0004-637X/822/2/65

@article{c498010c34d14ce2b3df03b90fe02a6b,

title = "MEASUREMENTS of COSMIC-RAY PROTON and HELIUM SPECTRA from the BESS-POLAR LONG-DURATION BALLOON FLIGHTS over ANTARCTICA",

abstract = "The BESS-Polar Collaboration measured the energy spectra of cosmic-ray protons and helium during two long-duration balloon flights over Antarctica in 2004 December and 2007 December at substantially different levels of solar modulation. Proton and helium spectra probe the origin and propagation history of cosmic rays in the galaxy, and are essential to calculations of the expected spectra of cosmic-ray antiprotons, positrons, and electrons from interactions of primary cosmic-ray nuclei with the interstellar gas, and to calculations of atmospheric muons and neutrinos. We report absolute spectra at the top of the atmosphere for cosmic-ray protons in the kinetic energy range 0.2-160 GeV and helium nuclei in the range 0.15-80 GeV/nucleon. The corresponding magnetic-rigidity ranges are 0.6-160 GV for protons and 1.1-160 GV for helium. These spectra are compared to measurements from previous BESS flights and from ATIC-2, PAMELA, and AMS-02. We also report the ratio of the proton and helium fluxes from 1.1 to 160 GV and compare this to the ratios from PAMELA and AMS-02.",

keywords = "astroparticle physics, cosmic rays",

author = "K. Abe and H. Fuke and S. Haino and T. Hams and M. Hasegawa and A. Horikoshi and A. Itazaki and Kim, {K. C.} and T. Kumazawa and A. Kusumoto and Lee, {M. H.} and Y. Makida and S. Matsuda and Y. Matsukawa and K. Matsumoto and Mitchell, {J. W.} and Z. Myers and J. Nishimura and M. Nozaki and R. Orito and Ormes, {J. F.} and N. Picot-Clemente and K. Sakai and M. Sasaki and Seo, {E. S.} and Y. Shikaze and R. Shinoda and Streitmatter, {R. E.} and J. Suzuki and Y. Takasugi and K. Takeuchi and K. Tanaka and N. Thakur and T. Yamagami and A. Yamamoto and T. Yoshida and K. Yoshimura",

note = "Funding Information: The BESS-Polar program is a Japan-United States collaboration, supported in Japan by the Grant-in-Aid KAKENHI for Specially Promoted and Basic Researches, MEXT-JSPS, and in the United States by NASA. Balloon flight operations were carried out by the NASA Columbia Scientific Balloon (CSBF) Facility and the National Science Foundation United States Antarctic Program (USAP). Publisher Copyright: {\textcopyright} 2016. The American Astronomical Society. All rights reserved.",

year = "2016",

month = may,

day = "10",

doi = "10.3847/0004-637X/822/2/65",

language = "English",

volume = "822",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2",

}

TY - JOUR

T1 - MEASUREMENTS of COSMIC-RAY PROTON and HELIUM SPECTRA from the BESS-POLAR LONG-DURATION BALLOON FLIGHTS over ANTARCTICA

AU - Abe, K.

AU - Fuke, H.

AU - Haino, S.

AU - Hams, T.

AU - Hasegawa, M.

AU - Horikoshi, A.

AU - Itazaki, A.

AU - Kim, K. C.

AU - Kumazawa, T.

AU - Kusumoto, A.

AU - Lee, M. H.

AU - Makida, Y.

AU - Matsuda, S.

AU - Matsukawa, Y.

AU - Matsumoto, K.

AU - Mitchell, J. W.

AU - Myers, Z.

AU - Nishimura, J.

AU - Nozaki, M.

AU - Orito, R.

AU - Ormes, J. F.

AU - Picot-Clemente, N.

AU - Sakai, K.

AU - Sasaki, M.

AU - Seo, E. S.

AU - Shikaze, Y.

AU - Shinoda, R.

AU - Streitmatter, R. E.

AU - Suzuki, J.

AU - Takasugi, Y.

AU - Takeuchi, K.

AU - Tanaka, K.

AU - Thakur, N.

AU - Yamagami, T.

AU - Yamamoto, A.

AU - Yoshida, T.

AU - Yoshimura, K.

N1 - Funding Information: The BESS-Polar program is a Japan-United States collaboration, supported in Japan by the Grant-in-Aid KAKENHI for Specially Promoted and Basic Researches, MEXT-JSPS, and in the United States by NASA. Balloon flight operations were carried out by the NASA Columbia Scientific Balloon (CSBF) Facility and the National Science Foundation United States Antarctic Program (USAP). Publisher Copyright: © 2016. The American Astronomical Society. All rights reserved.

PY - 2016/5/10

Y1 - 2016/5/10

N2 - The BESS-Polar Collaboration measured the energy spectra of cosmic-ray protons and helium during two long-duration balloon flights over Antarctica in 2004 December and 2007 December at substantially different levels of solar modulation. Proton and helium spectra probe the origin and propagation history of cosmic rays in the galaxy, and are essential to calculations of the expected spectra of cosmic-ray antiprotons, positrons, and electrons from interactions of primary cosmic-ray nuclei with the interstellar gas, and to calculations of atmospheric muons and neutrinos. We report absolute spectra at the top of the atmosphere for cosmic-ray protons in the kinetic energy range 0.2-160 GeV and helium nuclei in the range 0.15-80 GeV/nucleon. The corresponding magnetic-rigidity ranges are 0.6-160 GV for protons and 1.1-160 GV for helium. These spectra are compared to measurements from previous BESS flights and from ATIC-2, PAMELA, and AMS-02. We also report the ratio of the proton and helium fluxes from 1.1 to 160 GV and compare this to the ratios from PAMELA and AMS-02.

AB - The BESS-Polar Collaboration measured the energy spectra of cosmic-ray protons and helium during two long-duration balloon flights over Antarctica in 2004 December and 2007 December at substantially different levels of solar modulation. Proton and helium spectra probe the origin and propagation history of cosmic rays in the galaxy, and are essential to calculations of the expected spectra of cosmic-ray antiprotons, positrons, and electrons from interactions of primary cosmic-ray nuclei with the interstellar gas, and to calculations of atmospheric muons and neutrinos. We report absolute spectra at the top of the atmosphere for cosmic-ray protons in the kinetic energy range 0.2-160 GeV and helium nuclei in the range 0.15-80 GeV/nucleon. The corresponding magnetic-rigidity ranges are 0.6-160 GV for protons and 1.1-160 GV for helium. These spectra are compared to measurements from previous BESS flights and from ATIC-2, PAMELA, and AMS-02. We also report the ratio of the proton and helium fluxes from 1.1 to 160 GV and compare this to the ratios from PAMELA and AMS-02.

KW - astroparticle physics

KW - cosmic rays

UR - http://www.scopus.com/inward/record.url?scp=84969540639&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84969540639&partnerID=8YFLogxK

U2 - 10.3847/0004-637X/822/2/65

DO - 10.3847/0004-637X/822/2/65

M3 - Article

AN - SCOPUS:84969540639

SN - 0004-637X

VL - 822

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 65

ER -

MEASUREMENTS of COSMIC-RAY PROTON and HELIUM SPECTRA from the BESS-POLAR LONG-DURATION BALLOON FLIGHTS over ANTARCTICA

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this