GMRT Observations of Jupiter's Synchrotron Radio Emission at 610 MHz

Details GMRT Observations of Jupiter's Synchrotron Radio Emission at 610 MHz GMRT Observations of Jupiter's Synchrotron Radio Emission at 610 MHz

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..407..369b&link_type=abstract

The Low-Frequency Radio Universe ASP Conference Series, Vol. 407, proceedings of the conference held 8-12 December 2008, at Nati

Astronomy and Astrophysics

Astrophysics

Scientific paper

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.

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