Jupiter's Radio Spectrum from 0.074 up to 15 GHz

Details Jupiter's Radio Spectrum from 0.074 up to 15 GHz Jupiter's Radio Spectrum from 0.074 up to 15 GHz

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm12a0834d&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM12A-0834

Physics

2720 Energetic Particles, Trapped, 2756 Planetary Magnetospheres (5443, 5737, 6030), 5737 Magnetospheres (2756)

Scientific paper

We have conducted a brief campaign in September 1998 to determine Jupiter's radio spectrum from 74 MHz up to 15 GHz. Jupiter was clearly detected at 74 MHz, the lowest frequency at which this planet's synchrotron radiation has been observed without contamination by the intense decametric emissions (there is no decametric emission at frequencies over 40 MHz). Simultaneously with the 74/330 MHz observations at the VLA, the planet was observed with the following telescopes: CLFST (151 MHz), WSRT (350, 610, 840, and 1380 MHz), MOST (843 MHz), Parkes (1350 MHz), 140-foot Green Bank (1370, 1470 MHz), DSN-Goldstone (2295 MHz, 8480 MHz), Effelsberg (2695, 4850 MHz), and HartRAO (8580, 5000 MHz). In Jan. 1996 we observed Jupiter with the VLA at 2 and 20 cm; these data will be combined with the Sep. 1998 data to extend the spectrum up to 15 GHz. The Goldstone data were obtained by the NASA/JPL Jupiter Patrol, and the Goldstone-Apple Valley Radio Telescope project. Jupiter's spectrum appears to be quite flat from 74 MHz up to 1.4 GHz, beyond which the flux density drops markedly. Model calculations as published by de Pater and co-authors match the spectral shape quite well. At the meeting we will show Jupiuter's spectrum and the spectra of several calibrators used to finetune the final spectral calibration.

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