HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Conference papers

The search for radio emission from giant exoplanets

Abstract : The intensity of Jupiter's auroral radio emission quickly gave rise to the question whether a comparable coherent emission from the magnetosphere of an extrasolar planet could be detectable. A simple estimation shows that exoplanetary auroral radio emission would have to be at least 1000 times more intense than Jupiter's emission to be detectable with current radio telescopes. Theoretical models suggest that, at least in certain cases, the radio emission of giant exoplanets may indeed reach such an intensity. At the same time, in order to generate such an emission, an exoplanet would need to have a sufficiently strong intrinsic planetary magnetic field. Extrasolar planets are indeed expected to have a magnetic field, but to date, their magnetic field has never been detected. As discussed elsewhere [Griessmeier et al., 2015], the most promising technique to unambiguously observe exoplanetary magnetic fields is to search for the planetary auroral radio emission. The detection of such an emission would thus constitute the first unambiguous detection of an exoplanetary magnetic field. We review recent theoretical studies and discuss their results for the two main parameters, namely the maximum emission frequency and the intensity of the radio emission. The predicted values indicate that detection should be possible using modern low-frequency radio telescopes. We also review past observation attempts, and compare their sensitivity to the predicted emission.
Document type :
Conference papers
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03568969
Contributor : Nathalie Pothier Connect in order to contact the contributor
Submitted on : Saturday, February 12, 2022 - 6:18:06 PM
Last modification on : Tuesday, May 10, 2022 - 3:24:58 PM
Long-term archiving on: : Friday, May 13, 2022 - 6:30:11 PM

File

430_8263-4_griessmeier_285-300...
Files produced by the author(s)

Identifiers

Collections

Citation

Jean-Mathias Grießmeier. The search for radio emission from giant exoplanets. Planetary Radio Emissions VIII, 2017, Vienne, Austria. pp.285-299, ⟨10.1553/PRE8s285⟩. ⟨insu-03568969⟩

Share

Metrics

Record views

6

Files downloads

5