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Astro & GW Colloquium

The Formation of the First Stars in the Universe

Speaker: Dr Paul Clark (Cardiff University)
Date: Wednesday 13 March 2019
Time: 14:00
Venue: Queens Buildings N/3.28

The formation of the first stars in the Universe was very different from the star formation we see today, with cosmology, dark matter, chemistry and the physics of hydrogen all playing their own unique roles. In this talk — which will be pitched firmly at the colloquium level — we will cover the ‘How, Why and When’ of the first stars, giving a tour of the curious quirks of physics that enabled these stars to form. We will then discuss how the first stars set stage for the formation of the first galaxies look at their role in the early stages of reionisation. Along the way we will cover the controversies over the mass of the first stars, whether they can ever be observed, and how they might be good candidates for high-redshift gravitational waves.