JILA Auditorium

Dragonfly: In Situ Exploration of Titan's Prebiotic Chemistry and Habitability

When
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Abstract:
	Saturn's largest moon, Titan, is an ocean world with a dense
atmosphere, abundant complex organic material on its icy surface, and a
liquid-water ocean in its interior.  The joint NASA-ESA Cassini- Huygens
mission revealed Titan to be surprisingly Earth-like, with active
geological processes and opportunities for organic material to have mixed
with liquid water on the surface in the past.  These attributes make Titan
a singular destination to seek answers to fundamental questions about what

Formation of a Hot Corona and Quasi-periodic Oscillations in General Relativistic MHD Simulations of Luminous Black Hole Accretion Disks

When
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Abstract:
	The gravitational pull of a black hole attracts gas and forms a
physical laboratory whose extreme conditions cannot be replicated on Earth.
The infalling gas forms an accretion disk where the interplay between
hydromagnetic processes and the warping of space-time releases
gravitational energy in the form of radiation, relativistic jets, and
winds. It is likely that most gas falls into black holes when the accretion
rate approaches the Eddington limit, at which point radiation pressure
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