Nuclear physics experiments for dense matter
Jeudi 16 avril 2020 11:00
- Duree : 1 heure
Lieu : Seminar Room 7/8 - ILL 1, 71 avenue des Martyrs, Grenoble
Orateur : Francesca GULMINELLI (University of Caen and LPC-Caen FRANCE)
Our understanding of the structure and properties of dense matter in the universe has been recently boosted by the first gravitational wave detection by the LIGO-VIRGO collaboration from two merging neutron stars, and the different multi-messenger electromagnetic counterparts. New multi-messenger detections on different astrophysical sources of dense matter, such as binaries, isolated neutron stars and core-collapse supernova are expected to unveil in the next future excited open questions such as the existence of deconfined matter in the core of neutron stars, and the origin of the r-process nucleosynthesis.
In this context, nuclear physics laboratory experiments can play a crucial role to clarify the connection between the observable astrophysical signals and the underlying microphysics. After a short review of the recent observations from the viewpoint of the nuclear physicist, I will concentrate on the connections between gravitational waves and neutrino observations on one side and dense matter modelling on the other side, as well as the constraints that such signals give to the nuclear equation of state.
The present status of the nuclear equation of state will be also reviewed. I will show that the collective effort of the nuclear physics community with both important advances on ab-initio calculations and new selective experiments on isovector properties, allows today to predict astrophysical observables from neutron stars, neutron star mergers, and core collapse supernova with reliable error bars. Different strategies to further progress on the quantitative understanding of the dense matter properties with nuclear experiments will be proposed.
Contact : tellier@ill.fr
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