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SUMMARY:[JC] The 511 keV Gamma-Ray Echo from Particle Decays in Supernovae
DTSTART:20260430T060000Z
DTEND:20260430T070000Z
DTSTAMP:20260430T125500Z
UID:indico-event-1280@indico.ibs.re.kr
DESCRIPTION:Speakers: Chui-Fan Kong\n\nIn this talk\, I will discuss the r
 ecent paper (arXiv:2511.14857)\, “511 keV Gamma-Ray Echo from Particle 
 Decays in Supernovae.” The work sets projected constraints on the axion
 –photon coupling using the 511 keV signal produced in the supernova enve
 lope.\nI will first introduce the physical picture\, including axion produ
 ction and decay\, positron production\, and positronium formation. I will 
 then show how the constraints are derived from the ALP-induced 511 keV sig
 nal\, along with the treatment of backgrounds.\n\nhttps://indico.ibs.re.kr
 /event/1280/
LOCATION:CTPU seminar room (IBS)
URL:https://indico.ibs.re.kr/event/1280/
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