Astro Seminar: Alejandro Vigna Gomez

Speaker: Alejandro Vigna Gomez (NBI)

Title: Massive Star Systems: From Parsec to Kilometre

Abstract: Massive stars are central in shaping the cosmos—they give rise to neutron stars, black holes, and the high‑energy and gravitational‑wave transients associated with these remnants. In this talk, I will present recent advances in multi-scale numerical simulations that follow massive star systems, from their birth and assembly in parsec‑scale molecular clouds, through stellar and dynamical evolution at 1–1,000 astronomical units, to compact-object binaries with orbital separations a small fraction of the radius of the Sun hosting remnants of about 10 kilometres in radius. I will highlight astrophysical systems that inform our understanding of nature, including stellar mergers that produce strongly magnetised remnants and black hole binaries that function as laboratories for supernova physics, and I will outline prospects for learning about compact objects in the decade ahead.

Location: Auditorium A, Blegdamsvej 17

Date: January 19, 2026

Time: 14:15