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Proposal Identification No.:

A2471

Date Received:

2009-Feb-01 11:35:57

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Continuum Galactic 40 Hours 4 hrs

Exploring the Giant Planet - Brown Dwarf Interface

We propose to use the Arecibo telescope with its C-band receiver and the WAPP spectrometer, to conduct a survey of giant extrasolar planets and the coolest brown dwarfs in search of bursts of radio emissions from these ob jects. In designing the search, we have been guided by the lack of radio detections of exoplanets in the previous low frequency surveys and by the surprising discoveries of rapid, broadband outbursts of highly circularly polarized, coherent radio emission from cool brown dwarfs in the 5-8 GHz frequency range, as outlined above. Possible detections of radio emission from the most massive planets and the coolest brown dwarfs would add to our understanding of the much debated transition from the lowest-mass stellar ob jects to planets. Detection of an exoplanetary radio emission would represent the first genuinely direct observation of any emission from an extrasolar planet and produce very useful constraints on planetary magnetic fields and hence on the interior structure of the planets themselves. They would also permit direct measurements of planetary rotation rates.

Name Alex Wolszczan

Institution Penn State University

E-mail alex@astro.psu.edu

Phone 814 863 1756

Student no

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to operator)

Instrument Setup
C Atmospheric Observation Instruments:

1


Sp ecial Equipment or setup: We plan to use the WAPP backend. Upgrade to the Mock spectrometer would be very desirable.

RFI Considerations Frequency Ranges Planned
4300-5300

2