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PRODID:UW-Madison-Physics-Events
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UID:UW-Physics-Event-9306
DTSTART:20250820T153000Z
DTEND:20250820T173000Z
DTSTAMP:20260413T084044Z
LAST-MODIFIED:20250612T203558Z
LOCATION:B343 Sterling
SUMMARY:Searches for transient astrophysical neutrino sources in real 
 time with the IceCube Neutrino Observatory\, Thesis Defense\, Jessie T
 hwaites\, Physics PhD Graduate Student
DESCRIPTION:Multi-messenger astrophysics is a powerful tool for unders
 tanding the most energetic sources in the universe. Although IceCube h
 as discovered a flux of extragalactic neutrinos\, the sources of the v
 ast majority of those neutrinos remain a mystery. Several classes of a
 strophysical transients are proposed sources of neutrino emission. By 
 searching for neutrinos from these sources in realtime\, we can identi
 fy multi-messenger sources rapidly to inform follow-up by other telesc
 opes. In this thesis\, a broad range of transients are analyzed\, incl
 uding gravitational wave transients\, nearby supernovae\, bright gamma
 -ray bursts\, and novae. Compact object mergers\, detected by the LIGO
 -Virgo-KAGRA detectors\, may produce neutrinos alongside their gravita
 tional wave emission. The hundreds of times smaller localization area 
 of neutrino track events can inform follow-up by other observatories i
 n realtime from these sources\, increasing the probability of identify
 ing the multi-messenger source. Another exciting transient event which
  occurred in October 2022 was the brightest gamma-ray burst ever recor
 ded\, GRB 221009A. We search for neutrinos from this GRB in realtime a
 nd in an archival search leveraging the full energy capabilities of th
 e detector. We set the strongest constraints on neutrino emission from
  GRBs using this single burst\, due to its bright electromagnetic flux
  and the IceCube non-detection. Finally\, we search for sub-TeV neutri
 nos from nearby and bright novae in both archival data and in realtime
 . In archival data\, we search for neutrinos from the nova RS Ophiuchi
  in its 2021 outburst\, the only nova so far detected to TeV gamma-ray
  energies. This analysis can be applied to the upcoming eruption of no
 va T Coronae Borealis\, which is both closer and brighter in optical f
 lux than RS Oph\, meaning the expected neutrino emission is several ti
 mes higher than that of RS Oph. IceCube will be able to search for neu
 trino emission from this nova in realtime using two neutrino datasets 
 spanning GeV-PeV neutrino energies.
URL:https://www.physics.wisc.edu/events/?id=9306
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