Predicting Radio Emission of Exoplanets in Enhanced Stellar Wind Environments
Abstract
The Radiometric Bode's Law is a scaling law that predicts the power of a planet's radio emission based on the incident stellar wind power, which works for the magnetized solar system planets. This scaling law has since been used to predict the radio emission from exoplanets such as Proxima Centauri b without addressing several space weather factors that greatly alter the assumptions used in the calculation, which may result in an incorrect prediction of the actual emission power. Utilizing 3D MHD modeling coupled with inner magnetosphere and ionosphere, we provide a means of more accurately estimating the efficiency at which the incident stellar wind power penetrates into the ionosphere and is available for the production of planetary radio emission. This more representative efficiency can be taken into account when using the Radiometric Bode's Law for exoplanetary systems whose space weather environment strongly differ from that of our solar system.
- Publication:
-
Solar Heliospheric and INterplanetary Environment (SHINE 2018)
- Pub Date:
- July 2018
- Bibcode:
- 2018shin.confE...5S