Formation of the first stars, galaxies, and black holes

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• Prof. Naoki Yoshida (University of Tokyo)
• Thursday 05 October 2023, 16:00-17:00
• Hoyle Lecture Theatre, Institute of Astronomy.

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Recent observations using brand-new facilities such as James Webb Space Telescope discovered infant galaxies that were in place when the age of the universe was just a few hundred million years. Even “mature” galaxies were found at the early epochs, suggesting possibly unknown processes that drive star and galaxy formation. I review recent progress in the theoretical study on the first generation of stars. I present the results from state-of-the-art computer simulations of early structure formation, and identify several key issues and open questions. The simulations start from realistic cosmological initial conditions that incorporate super-sonic gas motions left over from the recombination epoch. Tiny magnetic fields generated by the gas motions are also incorporated. I discuss formation of massive stars, black holes, and gravitational wave sources. Finally, I discuss prospects for future observations using next generation telescopes.

This talk is part of the Institute of Astronomy Colloquia series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Hoyle Lecture Theatre, Institute of Astronomy
• Institute of Astronomy Colloquia
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Priscilla

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