Séminaire / Seminar GReCO |
| « Physics of neutron stars: formation and multi-messenger signals » |
|
Jérôme Novak |
| Neutron stars are born in core-collapse supernova events from an iron core of massive main-sequence stars, leading to an explosion of the outer layers. This produces a proto-neutron star, which is hot and still contains many electrons, which will eventually cool down through the emission of neutrinos to a cold, beta-equilibrated neutron star. On the other hand, gravitational waves from neutron stars can provide us with valuable information about their composition and structure. After giving a brief introduction to the subject, I will detail some of the complex microphysics involved in the description of neutron stars and present the numerical models we have developed in our group to simulate them. Finally, some results will be shown illustrating the importance of using realistic microphysics inputs, as well as the capacity of multi-messenger observations to give us hints about e.g. a possible phase transition in neutron star matter. |
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lundi 6 novembre 2023 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |