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Séminaire du Jeudi 10 mars 2016

A new planet in the Solar System : Recent outcomes

Hervé Beust (IPAG)
Thursday March 10th - 11am
IPAG Seminar Room - IPAG

A few weeks ago, Batygin & Brown (2016) claimed that according to their work, the presence of an additional, outer planet in the Solar Sustem was required to explain the apsidial confinement of the outermost minor bodies in the Kuiper belt discovered recently. Journalists immediately reported this as a discovery of a new planet, which is of course exaggerated. I present this issue, starting with an historical point of view. Then, I detail in a didactic manner the model of Batygin & Brown and its consequences. I also present the more recent outcomes, such a further constraints about the possible current localization of the planet on its orbit (Fienga et al. 2016) , and prospects about its possible future detection (Cowan et al. 2016). I also show that Batygin & Brown’s analysis hides a technical technical analysis error that actually affects part of their conclusions, without changing them. Actually, their model turns out to work even better than they claim !


Sous la tutelle de:

tutelles

Sous la tutelle de:

CNRS Université Grenoble Alpes