The Missing Mass Mystery
Summary
This episode addresses the "missing baryon problem," explaining how astronomers have located the elusive regular matter predicted by Big Bang theory. The hosts detail how two research teams used the thermal Sunyaev-Zeldovich effect to detect this diffuse plasma within the cosmic web's filaments. The discussion confirms that most baryonic matter exists as hot gas between galaxies, resolving a major discrepancy in our understanding of the universe's composition.
Topics discussed
Sponsors: LinkedIn Ads and Google Chrome
The Missing Baryon Problem and the Universe's Mass
Refresher on Dark Matter, Dark Energy, and Baryons
Evidence from Big Bang Nucleosynthesis and CMB
Sponsors: LinkedIn Hiring Pro and Google Chrome
Sponsor: PayPal and the Cosmic Web Structure
Locating Missing Baryons in Intergalactic Filaments
Detection via Thermal Sunyaev-Zeldovich Effect
Sponsors: LinkedIn, Chrome, and PayPal
Implications for Big Bang Physics and Star Formation
Listener Q&A: Vacuum Energy and Virtual Particles
Listener Q&A: Time Travel and Theories of Everything
Sponsors: Kuvasier Cognac and Bose Headphones
Sponsor: Notre Dame MBA Program
Listen ad-free on Castria