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A fresh look on the limit on ultralight axion-like particles from SN1987A
Payez, Alexandre
2014In 10th Patras Workshop on Axions, WIMPs and WISPs
 

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Keywords :
axion-like particle; supernova; gamma-ray; galactic magnetic field
Abstract :
[en] We revisit the limit on very light axion-like particles (ALPs) from the absence of gamma rays coincidental with the neutrino burst from SN1987A. We use updated supernova simulations, modern models for the magnetic field inside the Galaxy, and a Primakoff cross section which takes into account proton-degeneracy and mass-reduction effects. We finally give an updated exclusion plot for the electromagnetic coupling of sub-eV ALPs, comparing our new bound with other limits as well as with future ALP searches.
Disciplines :
Physics
Space science, astronomy & astrophysics
Author, co-author :
Payez, Alexandre ;  Deutsches Elektronen-Synchrotron (DESY) > Theory group
Language :
English
Title :
A fresh look on the limit on ultralight axion-like particles from SN1987A
Publication date :
2014
Event name :
10th Patras Workshop on Axions, WIMPs and WISPs
Event organizer :
CERN
Event place :
Geneva, Switzerland
Event date :
June 29 2014 - July 4 2014
Audience :
International
Main work title :
10th Patras Workshop on Axions, WIMPs and WISPs
Publisher :
Verlag Deutsches Elektronen-Synchrotron, Hamburg, Germany
ISBN/EAN :
978-3-935702-90-4
Collection name :
DESY-PROC-2014-03
Pages :
4
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