Composition and energy spectra of anomalous cosmic rays observed by the geotail satellite

Nobuyuki Hasebe; K. Kondoh; Y. Mishima; T. Doke; J. Kikuchi; T. Hayashi; T. Takashima; M. Kobayashi; N. Takehana; H. Shirai; T. Yanagimachi; A. Nakamoto; H. Murakami; K. Nagata; T. Kohno; K. Munakata; C. Kato; S. Yanagita; Y. Yamada; M. Ehara; T. Kashiwagi; Y. Muraki; T. Koi; J. Sequeiros; J. Medina; B. Wilken

Composition and energy spectra of anomalous cosmic rays observed by the geotail satellite

Nobuyuki Hasebe^*, K. Kondoh, Y. Mishima, T. Doke, J. Kikuchi, T. Hayashi, T. Takashima, M. Kobayashi, N. Takehana, H. Shirai, T. Yanagimachi, A. Nakamoto, H. Murakami, K. Nagata, T. Kohno, K. Munakata, C. Kato, S. Yanagita, Y. Yamada, M. EharaT. Kashiwagi, Y. Muraki, T. Koi, J. Sequeiros, J. Medina, B. Wilken

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

The composition and energy spectra of anomalous cosmic-rays (ACRs) in the energies 6 - 200 MeV/n have been measured during the period from September 1992 to August 1995 using the High Energy Particle instrument onboard the GEOTAIL satellite orbiting at 1 AU. A remarkable enhancement of ACR N, O, Ne and Ar is observed during the period. A flux enhancement of anomalous argon at 1 AU is confirmed by the GEOTAIL satellite. The first possible evidence for the emergence of a measurable sulfur component in ACR below about 20 MeV/n is found. The flux increase of anomalous sulfur with 10.4 eV FIP is smaller than that of ACR carbon with 11.3 eV FIP, and much smaller than those of high FIP elements, which suggests that the fraction of neutral carbon and sulfur atoms is significantly lower in the very local interstellar medium.

Original language	English
Pages (from-to)	813-816
Number of pages	4
Journal	Advances in Space Research
Volume	19
Issue number	5
Publication status	Published - 1997
Externally published	Yes

ASJC Scopus subject areas

Space and Planetary Science
Astronomy and Astrophysics

Cite this

Hasebe, N., Kondoh, K., Mishima, Y., Doke, T., Kikuchi, J., Hayashi, T., Takashima, T., Kobayashi, M., Takehana, N., Shirai, H., Yanagimachi, T., Nakamoto, A., Murakami, H., Nagata, K., Kohno, T., Munakata, K., Kato, C., Yanagita, S., Yamada, Y., ... Wilken, B. (1997). Composition and energy spectra of anomalous cosmic rays observed by the geotail satellite. Advances in Space Research, 19(5), 813-816.

Hasebe, N, Kondoh, K, Mishima, Y, Doke, T, Kikuchi, J, Hayashi, T, Takashima, T, Kobayashi, M, Takehana, N, Shirai, H, Yanagimachi, T, Nakamoto, A, Murakami, H, Nagata, K, Kohno, T, Munakata, K, Kato, C, Yanagita, S, Yamada, Y, Ehara, M, Kashiwagi, T, Muraki, Y, Koi, T, Sequeiros, J, Medina, J & Wilken, B 1997, 'Composition and energy spectra of anomalous cosmic rays observed by the geotail satellite', Advances in Space Research, vol. 19, no. 5, pp. 813-816.

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title = "Composition and energy spectra of anomalous cosmic rays observed by the geotail satellite",

abstract = "The composition and energy spectra of anomalous cosmic-rays (ACRs) in the energies 6 - 200 MeV/n have been measured during the period from September 1992 to August 1995 using the High Energy Particle instrument onboard the GEOTAIL satellite orbiting at 1 AU. A remarkable enhancement of ACR N, O, Ne and Ar is observed during the period. A flux enhancement of anomalous argon at 1 AU is confirmed by the GEOTAIL satellite. The first possible evidence for the emergence of a measurable sulfur component in ACR below about 20 MeV/n is found. The flux increase of anomalous sulfur with 10.4 eV FIP is smaller than that of ACR carbon with 11.3 eV FIP, and much smaller than those of high FIP elements, which suggests that the fraction of neutral carbon and sulfur atoms is significantly lower in the very local interstellar medium.",

author = "Nobuyuki Hasebe and K. Kondoh and Y. Mishima and T. Doke and J. Kikuchi and T. Hayashi and T. Takashima and M. Kobayashi and N. Takehana and H. Shirai and T. Yanagimachi and A. Nakamoto and H. Murakami and K. Nagata and T. Kohno and K. Munakata and C. Kato and S. Yanagita and Y. Yamada and M. Ehara and T. Kashiwagi and Y. Muraki and T. Koi and J. Sequeiros and J. Medina and B. Wilken",

year = "1997",

language = "English",

volume = "19",

pages = "813--816",

journal = "Advances in Space Research",

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T1 - Composition and energy spectra of anomalous cosmic rays observed by the geotail satellite

AU - Hasebe, Nobuyuki

AU - Kondoh, K.

AU - Mishima, Y.

AU - Doke, T.

AU - Kikuchi, J.

AU - Hayashi, T.

AU - Takashima, T.

AU - Kobayashi, M.

AU - Takehana, N.

AU - Shirai, H.

AU - Yanagimachi, T.

AU - Nakamoto, A.

AU - Murakami, H.

AU - Nagata, K.

AU - Kohno, T.

AU - Munakata, K.

AU - Kato, C.

AU - Yanagita, S.

AU - Yamada, Y.

AU - Ehara, M.

AU - Kashiwagi, T.

AU - Muraki, Y.

AU - Koi, T.

AU - Sequeiros, J.

AU - Medina, J.

AU - Wilken, B.

PY - 1997

Y1 - 1997

N2 - The composition and energy spectra of anomalous cosmic-rays (ACRs) in the energies 6 - 200 MeV/n have been measured during the period from September 1992 to August 1995 using the High Energy Particle instrument onboard the GEOTAIL satellite orbiting at 1 AU. A remarkable enhancement of ACR N, O, Ne and Ar is observed during the period. A flux enhancement of anomalous argon at 1 AU is confirmed by the GEOTAIL satellite. The first possible evidence for the emergence of a measurable sulfur component in ACR below about 20 MeV/n is found. The flux increase of anomalous sulfur with 10.4 eV FIP is smaller than that of ACR carbon with 11.3 eV FIP, and much smaller than those of high FIP elements, which suggests that the fraction of neutral carbon and sulfur atoms is significantly lower in the very local interstellar medium.

AB - The composition and energy spectra of anomalous cosmic-rays (ACRs) in the energies 6 - 200 MeV/n have been measured during the period from September 1992 to August 1995 using the High Energy Particle instrument onboard the GEOTAIL satellite orbiting at 1 AU. A remarkable enhancement of ACR N, O, Ne and Ar is observed during the period. A flux enhancement of anomalous argon at 1 AU is confirmed by the GEOTAIL satellite. The first possible evidence for the emergence of a measurable sulfur component in ACR below about 20 MeV/n is found. The flux increase of anomalous sulfur with 10.4 eV FIP is smaller than that of ACR carbon with 11.3 eV FIP, and much smaller than those of high FIP elements, which suggests that the fraction of neutral carbon and sulfur atoms is significantly lower in the very local interstellar medium.

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M3 - Article

AN - SCOPUS:0040529491

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JO - Advances in Space Research

JF - Advances in Space Research

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ER -

Composition and energy spectra of anomalous cosmic rays observed by the geotail satellite

Abstract

ASJC Scopus subject areas

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