Phase scintillation observation during coronal sounding experiments with NOZOMI spacecraft

T. Imamura, K. Noguchi, A. Nabatov, K. I. Oyama, Z. Yamamoto, M. Tokumaru

研究成果: Article同行評審

16 引文 斯高帕斯(Scopus)

摘要

Radio occultation observations of the solar corona at solar offset distances of 12.8-36.9 RS were performed from December of 2000 to January of 2001, using the Nozomi spacecraft (Planet-B) of Japan. Phase scintillation spectra up to the frequency of ∼10 Hz were obtained in two-way mode with S-band uplink and X-band downlink. The spectra cannot be represented by a single power law especially for small offset distances. That is, at low frequencies (large scales) the spectra show slopes indicative of Kolmogorov, a local flattening occurs from ∼0.5 Hz (scale ∼600 km) to ∼3 Hz (∼100 km), and a steepening occurs again at higher frequencies. This three-component nature of the spectrum was observed with a single method for the first time, although the spectral shape is variable and the three-component feature is not always evident.

原文English
頁(從 - 到)1165-1169
頁數5
期刊Astronomy and Astrophysics
439
發行號3
DOIs
出版狀態Published - 2005 9月

All Science Journal Classification (ASJC) codes

  • 天文和天體物理學
  • 空間與行星科學

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