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Events During the Week of February 14th through February 21st, 2021

Monday, February 15th, 2021

NPAC (Nuclear/Particle/Astro/Cosmo) Forum
The High Energy Light Isotope Experiment (HELIX) and Galactic Cosmic Rays
Time: 11:00 am
Place: Zoom meeting
Speaker: Keith McBride, Ohio State University
Abstract: Join Zoom Meeting: https://uwmadison.zoom.us/j/92154756148?pwd=eGJsU2VLNmM0VkxEcDdNdEk5c0Jidz09
Meeting ID: 921 5475 6148
Passcode: 248945
Find your local number: https://uwmadison.zoom.us/u/abH6FEAoLY
Host: Justin Vandenbroucke
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Monday Science Seminar
Time: 12:00 pm
Place: https://uwmadison.zoom.us/j/96822123897?pwd=Z0ZESm1CNFRkUTVEMEIxM2RuN3h0UT09
Speaker: Dr. Leon Trapman, University of Wisconsin - Madison
Abstract: Sizing Up Protoplanetary Disks
Although we are certain that planets can be formed, there are still large gaps in our understanding of how they formed. Observations show that exoplanets are found in a large variety of planetary systems, from multiple terrestial planets packed inside the central ~1 AU to several gas giants spread over tens of AU from the central star. The diverse outcomes of planet formation are intimately linked to the protoplanetary in which these planets have formed and grown. To better understand planet formation we should therefore study protoplanetary disks.
Host: Melinda Soares-Furtado
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Plasma Physics (Physics/ECE/NE 922) Seminar
Poking the pedestal: Progress and Potential of Pellet ELM Pacing
Time: 12:00 pm
Place: Zoom Meeting
Speaker: Bob Wilcox, ORNL
Abstract: Chris Hegna is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
https://uwmadison.zoom.us/j/91835419103?pwd=YXhDdGlFeEZtc0c0MlZySUp0Q1FrUT09

Meeting ID: 918 3541 9103
Passcode: 578475
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Meeting ID: 918 3541 9103
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Meeting ID: 918 3541 9103
Passcode: 578475
Host: Chris Hegna
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Plasma Theory Seminar
tbd
Time: 4:00 pm
Place: Zoom Meeting
Speaker: J. S. Schmitt, Auburn University
Abstract: Chris Hegna is inviting you to a scheduled Zoom meeting.

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https://uwmadison.zoom.us/j/9548787359?pwd=VndwdGVMd2doQzVBWlgrZFc1Ni9pUT09

Meeting ID: 954 878 7359
Passcode: 4Ugg1v

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213.244.140.110 (Germany)
103.122.166.55 (Australia)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
69.174.57.160 (Canada)
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Meeting ID: 954 878 7359
Passcode: 596249
Host: Chris Hegna
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Tuesday, February 16th, 2021

Academic Calendar
Election Day
Time: 7:00 am
Place:
Abstract: Primary election for State Superintendent of Public Instruction and other local offices. Primary election State Superintendent of Public Instruction Local (if there are more than 2 candidates): County Executive, School Board, Alders, and Judges Go to MyVote.wi.gov to find your polling place, see what is on your ballot, and check your registration. If you are not registered at your current address, you can register at your polling place on Election Day. See vote.wisc.edu for information on registration and voter ID. (The final election for these contests will be April 6.) CONTACT: malischke@wisc.edu URL: https://myvote.wi.gov
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
MINERvA measurements of Neutrino Interactions in the GeV Regime
Time: 2:00 pm
Place: online
Speaker: Xianguo Lu, University of Oxford
Abstract: Abstract is in the attached file

Join Zoom Meeting https://uwmadison.zoom.us/j/97464571040?pwd=aUIvTkl2WVUzSVJLVW40cncvZUNrdz09 Meeting ID: 974 6457 1040 Passcode: 883756 One tap mobile +13126266799,,97464571040#,,,,*883756# US (Chicago) +19292056099,,97464571040#,,,,*883756# US (New York) Dial by your location +1 312 626 6799 US (Chicago) +1 929 205 6099 US (New York) +1 301 715 8592 US (Washington DC) +1 346 248 7799 US (Houston) +1 669 900 6833 US (San Jose) +1 253 215 8782 US (Tacoma) Meeting ID: 974 6457 1040 Passcode: 883756 Find your local number: https://uwmadison.zoom.us/u/acv8AVFTfA
Host: Tianlu Yuan
Presentation: xlu_20210216_Wisconsin_abstract.pdf
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Network in Neutrinos, Nuclear Astrophysics, and Symmetries (N3AS) Seminar
Hydrogen Mixing and the EDGES Anomaly
Time: 2:00 pm
Place: https://berkeley.zoom.us/j/91922781599
Speaker: Luke Johns, UC-Berkeley
Abstract: In 2018 the EDGES collaboration announced a detection of 21 cm hyperfine absorption at redshifts between about 15 and 20. The signal may indicate that the hydrogen gas at cosmic dawn was significantly colder than predicted. I'll describe a new scenario that might solve the mystery: hydrogen oscillates into a mirror state over the course of the cosmic dark ages, leaving the remnant gas cooled and the anomaly imprinted. This proposal differs markedly from other BSM scenarios in both the relevant microphysics and the implications for model building and cosmology.
Host: Baha Balantekin
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Neutrino astronomy with IceCube: an improved muon track reconstruction and a search for cross-correlations with AGN cores
Time: 3:00 pm
Place: Zoom meeting
Speaker: Federica Bradascio, DESY and Humboldt University of Berlin
Abstract: Join Zoom Meeting: https://uwmadison.zoom.us/j/93307839123?pwd=M2d6dzIySGlJRjB5ZkRMQUtxMDR2QT09
Meeting ID: 933 0783 9123
Passcode: 701353
Find your local number: https://uwmadison.zoom.us/u/ad0sP8cQ6R
Host: Justin Vandenbroucke
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Wednesday, February 17th, 2021

Department Meeting
Department Meeting - CANCELLED
Time: 12:15 pm
Place: cancelled due to lack of urgent business
Speaker: Sridhara Dasu, Department Chair
cancelled due to lack of urgent business.
Host: Sridhara Dasu
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Thursday, February 18th, 2021

Graduate Program Event
Prospective Ph.D. Student VIRTUAL Visit Day
Time: 12:00 am
Place: Virtual
Speaker: PhD Program Faculty & Graduate Students, UW-Madison, Department of Physics
Abstract: All admitted Ph.D. students for Fall 2021 will be invited for prospective student virtual visit days. Graduate students and faculty will receive more information as the dates approach.
Host: Michelle Holland, Graduate Program Coordinator
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Cosmology Journal Club
Time: 12:00 pm
Place:
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

Or click:
https://uwmadison.zoom.us/j/93592708053?pwd=VWVNMDJXV2N1blV0emg4ZUg3ZGRiUT09
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Astronomy Colloquium
"Looking at the Universe through gravitational lenses"
Time: 3:30 pm
Place: Zoom meeting(see Abstract ) Coffee and tea 3:30pm, Talk 3:45pm
Speaker: Lindsay King, University of Texas-Dallas
Abstract: Massive objects distort space-time, acting as gravitational lenses and distorting light bundles traveling to us from distant sources. Distinctive lensing signatures, including multiple or slightly stretched images of distant galaxies, are seen on the electromagnetic (EM) sky. Most of the matter in the Universe is dark; importantly, these lensing signatures allow us to map and weigh matter in massive objects, irrespective of whether it is luminous or dark. We start with an overview of the principles of lensing, some of the signatures seen on the EM sky on different scales in the Universe, and some of the conclusions that resulted.

One example that we will discuss is our investigation of the dark and luminous matter in a rare and extremely energetic collision between two giant clusters of galaxies, using lensing and other astrophysical data.

Theoretical work has shown that gravitational waves (GW) are also gravitationally lensed. We briefly describe the expected impact of lensing on the GW sky that will be seen with the future LISA space-based detector, and our current research on this topic.
Web Link:
https://uwmadison.zoom.us/j/88513896776?pwd=Y1JtRE1KZllxWkFTamJBSGtGdm9yQT09
Host: Tae Sun Kim UW Astronomy Department
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Friday, February 19th, 2021

Graduate Program Event
PhD Prospective Student VIRTUAL Visit Day
Time: 12:00 am
Place: Virtual
Speaker: PhD Program Faculty & Graduate Students, UW-Madison, Department of Physics
Abstract: All admitted Ph.D. students for Fall 2021 will be invited for prospective student virtual visit days. Graduate students and faculty will receive more information as the dates approach.
Host: Michelle Holland, Graduate Program Coordinator
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Theory Seminar (High Energy/Cosmology)
Resolving spacetime singularities in flux compactifications and KKLT
Time: 2:00 pm
Place: For zoom link, sign up at: https://groups.google.com/a/g-groups.wisc.edu/d/forum/theoryseminars/join
Speaker: Jakob Moritz, Cornell University
Abstract: I explain how string theory resolves ubiquitous singularities in type IIB flux compactifications (and eventually KKLT de Sitter vacua) via effects that are non-perturbative in the \alpha' expansion of string theory. I will show that these can be understood in detail by mapping them to well known gauge instanton effects in pure 4d N=2 Yang-Mills theory. A perhaps surprising consequence is that the naively 'elementary' D7 brane of type IIB string theory is properly thought of as a bound state of two mutually non-local cosmic defects in six dimensions upon compactification on a curved 4-manifold. Finally, I will argue that the resolution described indicates that KKLT de Sitter vacua can be controlled by a small flux superpotential although the K\"ahler potential may in general receive large corrections which are difficult to compute.
Host: Lars Aalsma
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Searching for UHE- photons at the Pierre Auger Observatory: a two variable approach exploiting the air-shower Universality
Time: 2:00 pm
Place: Zoom meeting
Speaker: Pierpaolo Savina, Università del Salento, Italy and Université Paris-Saclay, France
Abstract: Join Zoom Meeting: https://wipac-science.zoom.us/j/93424945316?pwd=UXFvNHhMYjVmZk9jY2ZZN0k5V09BUT09
Meeting ID: 934 2494 5316
Passcode: 762367
Find your local number: https://wipac-science.zoom.us/u/acioM9TM6I
Host: Lu Lu
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Department Coffee Hour
Department Coffee Hour (Virtual)
Time: 3:30 pm
Place: Virtual (see abstract for connection info)
Abstract: Topic: Department Coffee Hour
Time: Jan 29, 2021 03:30 PM Central Time (US and Canada)
Every week on Fri, until May 14, 2021, 16 occurrence(s)
Jan 29, 2021 03:30 PM
Feb 5, 2021 03:30 PM
Feb 12, 2021 03:30 PM
Feb 19, 2021 03:30 PM
Feb 26, 2021 03:30 PM
Mar 5, 2021 03:30 PM
Mar 12, 2021 03:30 PM
Mar 19, 2021 03:30 PM
Mar 26, 2021 03:30 PM
Apr 2, 2021 03:30 PM
Apr 9, 2021 03:30 PM
Apr 16, 2021 03:30 PM
Apr 23, 2021 03:30 PM
Apr 30, 2021 03:30 PM
May 7, 2021 03:30 PM
May 14, 2021 03:30 PM
Please download and import the following iCalendar (.ics) files to your calendar system.
Weekly: https://uwmadison.zoom.us/meeting/tJMkf-yqpjojHdRt7HGeqviWNpBBgTH6ardi/ics?icsToken=98tyKuCvpzMvGNyUuR6HRowEHYqgZ-rxiH5EgqdviEjNJCVCdArBGPJgELVLOI7R

Join Zoom Meeting
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Meeting ID: 979 8528 1970
Passcode: 309601
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Meeting ID: 979 8528 1970
Passcode: 309601
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213.244.140.110 (Germany)
103.122.166.55 (Australia)
149.137.40.110 (Singapore)
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Meeting ID: 979 8528 1970
Passcode: 309601


Host: Climate and Diversity Committee
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