Auroral zone X-ray pulsations associated with VLF pulsations: B15-3N balloon experiment
-
- Yamagishi Hisao
- National Institute of Polar Research
-
- Ono Takayuki
- National Institute of Polar Research
-
- Fukunishi Hiroshi
- National Institute of Polar Research
-
- Yamagami Takamasa
- The Institute of Space and Astronautical Science
-
- Nishimura Jun
- The Institute of Space and Astronautical Science
-
- Kodama Masahiro
- Department of Physics, Yamanashi Medical College
-
- Hirasima Yo
- Department of Physics, Rikkyo University
-
- Murakami Hiroyuki
- Department of Physics, Rikkyo University
-
- Holtet Jan A.
- Institute of Physics, University of Oslo
-
- Ullaland Stein
- Department of Physics, University of Bergen
-
- Pellinen Risto J.
- Finnish Meteorological Institute
この論文をさがす
抄録
A stratospheric balloon, carrying a Nal (T1) scintillation counter for measuring 20-100keV bremsstrahlung X-rays was launched from Stamsund (L=5.6) in Norway during the recovery phase of a magnetic substorm. The scintillation counter recorded many examples of X-ray microbursts and pulsations at a ceiling altitude of 7mb (33km). The ground-based VLF receiver at Andφya (L=6.1), located at 160km northeast of Stamsund, and at Syowa Station, Antarctica (L=6.1) observed polar chorus emissions and quasi-periodic (QP) emissions during the balloon flight. In the study of cross correlations between the X-ray and the VLF emissions, it has been found that the X-ray microbursts precede VLF chorus at Andφya by about 1.7s, while the VLF chorus at Syowa occurred almost simultaneously with the X-ray microbursts. This is qualitatively explained by the nature of counterstreaming type wave-particle interaction and the echoing of whistler mode wave packets in the magnetosphere. X-ray pulsations and rising-tone type QP emissions with periods of 20-30s showed a good coherency. This similarity suggests that both phenomena are closely related to each other through the cyclotron wave-particle interaction in the magnetosphere.
収録刊行物
-
- Memoirs of National Institute of Polar Research. Special issue
-
Memoirs of National Institute of Polar Research. Special issue 31 124-136, 1984-07
国立極地研究所
- Tweet
詳細情報
-
- CRID
- 1571135651795863424
-
- NII論文ID
- 110000009861
-
- NII書誌ID
- AA00733561
-
- ISSN
- 03860744
-
- 本文言語コード
- en
-
- データソース種別
-
- CiNii Articles