Electromagnetic Ion Cyclotron Waves Detected by Kaguya and Geotail in the Earth's Magnetotail

Tomoko Nakagawa, Masaki N. Nishino, Hideo Tsunakawa, Futoshi Takahashi, Hidetoshi Shibuya, Hisayoshi Shimizu, Masaki Matsushima, Yoshifumi Saito

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

Narrowband electromagnetic ion cyclotron waves first discovered by the Apollo 15 and 16 Lunar Surface Magnetometers were surveyed in the magnetic field data obtained by the Kaguya satellite at an altitude of ∼100 km above the Moon in the tail lobe and plasma sheet boundary layer of the Earth's magnetosphere. The frequencies of the waves were typically 0.7 times the local proton cyclotron frequency, and 75% of the waves were left hand polarized with respect to the background magnetic field. They had a significant compressional component and comprised several discrete packets. They were detected on the dayside, nightside, and above the terminator of the Moon, irrespective of the lunar magnetic anomaly, or the magnetic connection to the lunar surface. The waves with the same characteristics were detected by Geotail in the absence of the Moon in the magnetotail. The most likely energy source of the electromagnetic ion cyclotron waves is the ring beam ions in the plasma sheet boundary layer.

元の言語英語
ページ(範囲)1146-1164
ページ数19
ジャーナルJournal of Geophysical Research: Space Physics
123
発行部数2
DOI
出版物ステータス出版済み - 2 1 2018

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geomagnetic tail
magnetotail
Cyclotrons
cyclotrons
Earth (planet)
Ions
magnetic fields
ions
electromagnetism
Moon
moon
ion
lunar surface
boundary layers
Boundary layers
boundary layer
protons
Magnetic fields
magnetic field
hands

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology

これを引用

Electromagnetic Ion Cyclotron Waves Detected by Kaguya and Geotail in the Earth's Magnetotail. / Nakagawa, Tomoko; Nishino, Masaki N.; Tsunakawa, Hideo; Takahashi, Futoshi; Shibuya, Hidetoshi; Shimizu, Hisayoshi; Matsushima, Masaki; Saito, Yoshifumi.

:: Journal of Geophysical Research: Space Physics, 巻 123, 番号 2, 01.02.2018, p. 1146-1164.

研究成果: ジャーナルへの寄稿記事

Nakagawa, T, Nishino, MN, Tsunakawa, H, Takahashi, F, Shibuya, H, Shimizu, H, Matsushima, M & Saito, Y 2018, 'Electromagnetic Ion Cyclotron Waves Detected by Kaguya and Geotail in the Earth's Magnetotail', Journal of Geophysical Research: Space Physics, 巻. 123, 番号 2, pp. 1146-1164. https://doi.org/10.1002/2017JA024505
Nakagawa, Tomoko ; Nishino, Masaki N. ; Tsunakawa, Hideo ; Takahashi, Futoshi ; Shibuya, Hidetoshi ; Shimizu, Hisayoshi ; Matsushima, Masaki ; Saito, Yoshifumi. / Electromagnetic Ion Cyclotron Waves Detected by Kaguya and Geotail in the Earth's Magnetotail. :: Journal of Geophysical Research: Space Physics. 2018 ; 巻 123, 番号 2. pp. 1146-1164.
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abstract = "Narrowband electromagnetic ion cyclotron waves first discovered by the Apollo 15 and 16 Lunar Surface Magnetometers were surveyed in the magnetic field data obtained by the Kaguya satellite at an altitude of ∼100 km above the Moon in the tail lobe and plasma sheet boundary layer of the Earth's magnetosphere. The frequencies of the waves were typically 0.7 times the local proton cyclotron frequency, and 75{\%} of the waves were left hand polarized with respect to the background magnetic field. They had a significant compressional component and comprised several discrete packets. They were detected on the dayside, nightside, and above the terminator of the Moon, irrespective of the lunar magnetic anomaly, or the magnetic connection to the lunar surface. The waves with the same characteristics were detected by Geotail in the absence of the Moon in the magnetotail. The most likely energy source of the electromagnetic ion cyclotron waves is the ring beam ions in the plasma sheet boundary layer.",
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