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Title: Estimating spin parameters ab initio

Speaker: Dr. Christophe Pichon (Institut d'astrophysique de Paris (IAP))

Date&Time: 2023-11-21, 14:30 PM

Location: 과학관 638호 (Science Hall, 638)

Language: English

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Abstract:

We build a model to predict from first principles the properties of major mergers. We predict these from the coalescence of peaks and saddle points in the vicinity of a given larger peak, as one increases the smoothing scale in the initial linear density field as a proxy for cosmic time. Our model allows us to recover that the typical spin brought by mergers: it is of the order of a few tens of per cent.