Recent observations of the very low frequency interplanetary radio emission |
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| Institution: | 1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023 China;2. School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026 China;3. State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190 China;1. College of Engineering and Design, Lishui University, Lishui 323000, China;2. Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China;3. Institute of Space Physics, Luoyang Normal University, Luoyang 471934, China |
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| Abstract: | Observations of radio emissions in the frequency range of 2 to 3 kHz have been made in the distant heliosphere by the Voyager 1 and 2 plasma wave instruments. Based primarily on wideband observations made periodically throughout the cruise phases of the missions the radio emission, first observed in 1982, appears to have been present almost continuously since 1983. The spectrum is complex, usually showing two peaks, one near 2 and another near 3 kHz. Occasionally, only one of the peaks is observed. A possible source for the radio emissions is the terminal shock in the outer heliosphere. |
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