Jupiter and jovian exoplanets in Palatini <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>f</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mover accent="true"><mml:mi>R</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:mo stretchy="false">)</mml:mo></mml:math> gravity

Abstract

Some parts of the substellar evolution, such as fragmentation of a gaseous cloud and a Jupiter-like planet's cooling, are demonstrated to be impacted by Palatini $f(\overline{R})$ gravity. Using simple models describing those processes we show that the opacity mass limit as well as cooling time of jovian planets differ in modified gravity.

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