When
3:30 p.m., Oct. 13, 2009
Where
Kuiper Space Sciences Building 308
Dr. Neal Turner from the Jet Propulsion Laboratory is the scheduled speaker.
Abstract:
The regular satellites of Jupiter and Saturn were formed in disks of gas and dust orbiting the young planets. The keys to understanding the formation environment are the transport of mass and angular momentum within the disks. Turbulence driven by the magneto-rotational instability provides transport if the gas is sufficiently ionized to couple to embedded magnetic fields. For the two leading pictures of the circum Jovian disk, the minimum-mass and gas-starved models, I will describe the likely ionization state and the distribution of the turbulence, compare with the properties of the larger protosolar disk, and discuss the consequences for satellite formation.
Abstract:
The regular satellites of Jupiter and Saturn were formed in disks of gas and dust orbiting the young planets. The keys to understanding the formation environment are the transport of mass and angular momentum within the disks. Turbulence driven by the magneto-rotational instability provides transport if the gas is sufficiently ionized to couple to embedded magnetic fields. For the two leading pictures of the circum Jovian disk, the minimum-mass and gas-starved models, I will describe the likely ionization state and the distribution of the turbulence, compare with the properties of the larger protosolar disk, and discuss the consequences for satellite formation.
General
LPL Colloquium
Undergraduate
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