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Events on Thursday, October 22nd, 2020

Cosmology Journal Club
Time: 12:00 pm - 1:00 pm
Abstract: Cosmology Journal Club is back! We will be having virtual meetings this semester.

Each week, we start with a couple scheduled 15 minute talks about one's research, or an arXiv paper. The last 30 minutes will typically be open to the group for anyone to discuss an arXiv paper.

All are welcome and all fields of cosmology are appropriate.

Contact Ross Cawthon, cawthon@wisc, for more information.

Zoom info
Meeting ID: 93592708053, passcode: cmbadger

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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Evidence for the Higgs boson decays to dimuons
Time: 3:00 pm - 4:00 pm
Place: Zoom :
Speaker: Stephane Cooperstein, UCSD
Host: Sridhara Dasu
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Astronomy Colloquium
Scaling Laws for Large Scale Magnetic Fields in Stars and in the Laboratory
Time: 3:30 pm - 5:00 pm
Place: Zoom meeting(see Abstract ) Coffee and tea 3:30 pm, Talk 3:45 PM
Speaker: Ethan Visniac, John Hopkins University
Abstract: The turbulent generation of large scale magnetic fields is driven by the transport of magnetic helicity, which is robustly conserved in conducting fluids. Some simple scaling laws emerge from this. These can be extended by considering the relationship between shear and rotation in turbulent convection. This work can be directly applied to stellar magnetic fields for fully convective stars. Surprisingly, the same scaling laws seem to apply generally, even in the presence of stellar tachoclines. I will also discuss the prospects for applying these insights to laboratory experiments.

Zoom Meeting information:

Meeting ID: 817 5005 5728
Passcode: 000018
Host: Professor Alex Lazarian
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