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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-9347
DTSTART:20250905T150000Z
DTEND:20250905T170000Z
DTSTAMP:20260413T084053Z
LAST-MODIFIED:20250814T192757Z
LOCATION:5280 Chamberlin
SUMMARY:Understanding the production of astrophysical neutrinos in X-r
 ay dense and gamma-ray obscured environments\, Preliminary Exam\, Arif
 a Khatee Zathul\, Physics PhD Graduate Student
DESCRIPTION:The IceCube Neutrino Observatory has detected the first so
 urces contributing to the diffuse flux of astrophysical neutrinos disc
 overed in 2013. In this talk\, I will present evidence that these neut
 rinos originate in the innermost regions of active galactic nuclei\, w
 here 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 neutrin
 o production episodes. This is supported by constraints placed by IceC
 ube's diffuse neutrino flux measurement using the Enhanced Starting Tr
 ack Event Selection (ESTES)\, Medium Energy Starting Events (MESE)\, a
 nd CombinedFit datasets.
URL:https://www.physics.wisc.edu/events/?id=9347
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