Nucleosynthesis and Evolution of Neutron Stars

Equation-of-state constraints from helium in kilonovae

Jan 29, 2025, 10:10 AM

40m

Maskawa Hall (Kyoto University)

Invited talk Oral Presentation

Speaker

Oliver Just (GSI Darmstadt)

Description

Neutron-star mergers are excellent laboratories for stuying the properties of high-density matter. I will report our recent study modeling the imprint of helium absorption features in kilonova spectra, which revealed that the kilonova accompanying GW170817 likely did not harbor significant amounts of helium. I will discuss the implications of this finding for the lifetime of the neutron-star remnant and for the equation-of-state related properties of cold neutron stars.

Presentation materials

29_02_Just.pdf