The influence of eclipses in the stellar radio emission

Publisher： Cambridge University Press

E-ISSN： 1743-9221|12|S328|305-307

ISSN： 1743-9213

Source： Proceedings of the International Astronomical Union, Vol.12, Iss.S328, 2017-09, pp. : 305-307

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Abstract

Here we simulate the shape of a planetary transit observed at radio wavelengths. The simulations use a light curve of the K4 star HAT-P-11 and its hot Jupiter companion as proxy. From the HAT-P-11 optical light curve, a prominent spot was identified (1.10 R P and 0.6 I C ). On the radio regime, the limb brighting of 30% was simulated by a quadratic function, and the active region was assumed to have the same size of the optical spot. Considering that the planet size is 6.35% of the the stellar radius, for the quiet star regions the transit depth is smaller than 0.5%, however, this value can increase to ~2% when covering an active region with 5.0 times the quiet star brightness temperature.

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