Acceleration phenomena observed by interplanetary scintillation at 0.1-0.3 AU

M. Kojima, H. Misawa, H. Watanabe, Y. Yamauchi

Research output: Contribution to journalArticlepeer-review


Interplanetary scintillation has observed high-latitude streams which show low speeds (≤400 km/s) within 0.3 AU and high speeds (≥700 km/s) beyond 0.3 AU. The foot points of these streams were located in the HeI coronal holes or at their boundaries. Since the IPS measurement is biased by one or several mechanisms, we investigated whether this acceleration phenomena could be caused by bias effects or not. Speed increase of more than 100 km/s is left without being explained by the bias effects.

Original languageEnglish
Pages (from-to)229-237
Number of pages9
JournalAstrophysics and Space Science
Issue number1
Publication statusPublished - 1996
Externally publishedYes


  • Interplanetary scintillation
  • Solar wind acceleration
  • Turbulence level
  • Within 0.3 AU

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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