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SUMMARY:Off-axis GRBs and Where to Find Them
DTSTART;VALUE=DATE-TIME:20261028T164500Z
DTEND;VALUE=DATE-TIME:20261028T165500Z
DTSTAMP;VALUE=DATE-TIME:20261025T203347Z
UID:indico-contribution-3629@nyx.physics.mcgill.ca
DESCRIPTION:Speakers: Genevieve Schroeder ()\nLong-duration gamma-ray burs
 ts (GRBs) are the most luminous explosions in the Universe\, visible out t
 o cosmological redshifts. Almost every spectroscopically confirmed superno
 va (SN) associated with a long GRB has been hydrogen and helium poor with 
 broad lines (Ic-bl)\, indicating a stripped massive star progenitor with f
 ast winds that produced a highly-collimated jet viewed on-axis. A critical
  prediction of this progenitor model is that there should be a large numbe
 r of off-axis jets accompanying SNe Ic-bl - however\, this has yet to be o
 bservationally confirmed. Additionally\, if a GRB is observed moderately o
 ff-axis\, it may result in a spectrally softer X-ray flash (XRFs)\, detect
 able with X-ray observatories such as Einstein Probe and SVOM. Radio obser
 vations of XRFs and SNe Ic-bl can reveal late rising afterglows as the jet
  spreads into the field of view\, providing one of the best pieces of evid
 ence for the off-axis GRB scenario. Here\, I will present recent results f
 ollowing up several candidate off-axis GRBs\, including an XRF and a sampl
 e of radio loud SNe Ic-bl. Additionally\, I will lay the path forward to d
 etecting off-axis GRBs in the era of large transient surveys.\n\nhttps://n
 yx.physics.mcgill.ca/event/587/contributions/3629/
LOCATION:Online 
URL:https://nyx.physics.mcgill.ca/event/587/contributions/3629/
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