Events at Physics |
Events During the Week of August 31st through September 7th, 2025
Monday, September 1st, 2025
- Academic Calendar
- Labor Day
- Abstract: *Note: actual end time may vary.* CONTACT: admin@secfac.wisc.edu
Tuesday, September 2nd, 2025
- No events scheduled
Wednesday, September 3rd, 2025
- Academic Calendar
- Fall semester instruction begins
- Abstract: *Note: actual end time may vary.* CONTACT: admin@secfac.wisc.edu
- Department Meeting
- Time: 12:15 pm - 1:15 pm
- Place: B343 Sterling
- Speaker: Kevin Black, UW-Madison
- Host: Kevin Black
Thursday, September 4th, 2025
- No events scheduled
Friday, September 5th, 2025
- Preliminary Exam
- Understanding the production of astrophysical neutrinos in X-ray dense and gamma-ray obscured environments
- Time: 10:00 am - 12:00 pm
- Place: 5280 Chamberlin
- Speaker: Arifa Khatee Zathul, Physics PhD Graduate Student
- Abstract: The IceCube Neutrino Observatory has detected the first sources contributing to the diffuse flux of astrophysical neutrinos discovered in 2013. In this talk, I will present evidence that these neutrinos originate in the innermost regions of active galactic nuclei, where the X-ray corona surrounding the supermassive black hole acts as the target for photohadronic interactions. Using multiwavelength data, I will also argue that sources are gamma-ray obscured during neutrino production episodes. This is supported by constraints placed by IceCube's diffuse neutrino flux measurement using the Enhanced Starting Track Event Selection (ESTES), Medium Energy Starting Events (MESE), and CombinedFit datasets.
- Host: Francis Halzen
- Physics Department Colloquium
- State of the Department
- Time: 3:30 pm - 4:30 pm
- Place: Chamberlin 2241
- Speaker: Kevin Black, University of Wisconsin-Madison
- Host: Mark Saffman