GMRT observations of Jupiter's synchrotron radio emission at 610 MHz

Bhardwaj, Anil ; Ishwara-Chandra, C. H. ; Udaya Shankar, N. ; Misawa, Hiroaki ; Imai, Kota ; Miyoshi, Yoshizumi ; Tsuchiya, Fuminori ; Kondo, Tetsuro ; Morioka, Akira (2009) GMRT observations of Jupiter's synchrotron radio emission at 610 MHz ASP Conference Series, 407 . pp. 369-372. ISSN 1080-7926

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The non-thermal decimeteric radio emission from Jupiter is dominated by synchrotron emission originating from high-energy electrons trapped in Jupiter's inner radiation belt (<5 Jovian radii). We observed Jupiter during February 24 - March 3, 2003 with the GMRT to study its day-to-day variability. Each day's observations lasted for ~10 hours (the rotation period of Jupiter). These observations suggest a correlation between the Jupiter radio flux density and the solar radio flux density at 10.7 cm (which is a proxy for solar EUV flux). Short-term variability (flux density change by 20%) seen at 610 MHz in 6-day observation seems to be due to enhanced solar EUV activity. This is the first result reporting the short-term variability in Jupiter synchrotron radiation at 610 MHz. The results have implications for Jovian radiation belt dynamics and upper atmospheric processes.

Item Type:Article
Source:Copyright of this article belongs to Astronomical Society of the Pacific (ASP).
ID Code:74519
Deposited On:15 Dec 2011 11:45
Last Modified:15 Dec 2011 11:45

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