Search for Radio Emissions From Extrasolar Planets at 150 MHz

Details Search for Radio Emissions From Extrasolar Planets at 150 MHz Search for Radio Emissions From Extrasolar Planets at 150 MHz

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa53b1181w&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SA53B-1181

Physics

6296 Extra-Solar Planets, 6297 Instruments And Techniques, 7534 Radio Emissions, 7594 Instruments And Techniques

Scientific paper

Using the new 150 MHz receivers of the Giant Metrewave Radiotelescope (GMRT) in India, we have searched for radio emissions from a sub-set of known "hot Jupiters": UpsAnd, Tauboo, 70 Vir, HD162020, and HD179949. We have selected these targets based on the expected flux density and the level of background noise. Calibrations with GMRT at 150 MHz have confirmed the noise floor to be a few mJy over a 5 MHz bandwidth. The noise floor is well below the expected flux levels from the targets. No observation of these targets has been attempted previously at these frequencies with the sensitivity and aperture offered by GMRT. Radio maps of the targets were produced using the AIPS CLEANing and image making software, and will be presented. Dynamic spectra from the target regions will also be presented. In addition to the targets above, we have just (August 2005) completed new and deeper (longer integration times) radio observations of UpsAnd, HD179949 (evidence of star-planet magenic connection), HD188753Ab (newly discovered in tripple star system), HD209458b (transiting planet), and Gliese876 (red dwarf system containg "rocky" planet). Time permitting for analyses, we will present very preliminary, first-look, results.

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