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Magnetospheric Emission from Extrasolar Planets

Lazio, J. and Bastian, T. and Bryden, G. and Farrell, W. M. and Griessmeier, J.-M. and Hallinan, G. and Kasper, J. and Kuiper, T. and Lecacheux, A. and Majid, W. and Osten, R. and Shkolnik, E. and Stevens, I. and Winterhalter, D. and Zarka, P. (2009) Magnetospheric Emission from Extrasolar Planets. . (Unpublished)

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The magnetospheric emissions from extrasolar planets represent a science frontier for the next decade. All of the solar system giant planets and the Earth produce radio emissions as a result of interactions between their magnetic fields and the solar wind. In the case of the Earth, its magnetic field may contribute to its habitability by protecting its atmosphere from solar wind erosion and by preventing energetic particles from reaching its surface. Indirect evidence for at least some extrasolar giant planets also having magnetic fields includes the modulation of emission lines of their host stars phased with the planetary orbits, likely due to interactions between the stellar and planetary magnetic fields. If magnetic fields are a generic property of giant planets, then extrasolar giant planets should emit at radio wavelengths allowing for their direct detection. Existing observations place limits comparable to the flux densities expected from the strongest emissions. Additional sensitivity at low radio frequencies coupled with algorithmic improvements likely will enable a new means of detection and characterization of extrasolar planets within the next decade.

Item Type:Report or Paper (White Paper)
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URLURL TypeDescription Paper
Bastian, T.0000-0002-0713-0604
Hallinan, G.0000-0002-7083-4049
Shkolnik, E.0000-0002-7260-5821
Record Number:CaltechAUTHORS:20190404-155556339
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94478
Deposited By: Tony Diaz
Deposited On:04 Apr 2019 23:32
Last Modified:03 Oct 2019 21:04

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