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Events During the Week of April 30th through May 7th, 2023

Monday, May 1st, 2023

No events scheduled

Tuesday, May 2nd, 2023

Search for dark matter produced in association with Higgs boson decaying to bottom quark pair
Time: 10:00 am - 12:00 pm
Place: 5310 Chamberlin
Speaker: Shivani Lomte, Physics Graduate Student
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Wednesday, May 3rd, 2023

Multi-Messenger Searches for High Energy Cosmic Ray Accelerators
Time: 11:00 am - 1:00 am
Place: 4274 Chamberlin
Speaker: David Guevel, Physics Graduate Student
Abstract: The sources of the highest energy cosmic rays are unknown. Within the Milky Way, cosmic rays, which are high energy protons and nuclei, are accelerated to a few PeV by accelerators which have yet to be identified. Even higher energy cosmic rays are thought to be accelerated by distant active galaxies. In both cases, cosmic rays themselves cannot be directly traced back to their sources because they are deflected by the magnetic fields they traverse. Multi-messenger observations can reveal the origin of the cosmic rays through the underlying physics that connects cosmic rays, gamma-rays, and neutrinos. I will present two ongoing works: (1) X-ray observations by Swift-XRT of the Cygnus Cocoon, a gamma-ray source which has been identified as a likely PeV cosmic ray source within the Milky Way, can be used to rule out alternative models of gamma-ray emission thus providing evidence the cosmic ray acceleration model. (2) IceCube neutrinos are an indicator of high energy cosmic ray production. A cross correlation of IceCube neutrinos with a galaxy catalog can constrain the sources that emit extragalactic cosmic rays.
Host: Ke Fang
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Thursday, May 4th, 2023

No events scheduled

Friday, May 5th, 2023

No events scheduled