SN 1987A gamma-ray limits on the conversion of pseudoscalars

@inproceedings{CarlsonOlin1996SN1G,
  title={SN 1987A gamma-ray limits on the conversion of pseudoscalars},
  author={Eric D. CarlsonOlin},
  year={1996}
}
Abstract Pseudoscalar particles θ usually couple electromagnetically by an interaction of the form 1 4 gθF F , allowing them to convert to photons in the presence of magnetic fields. Notably, new low-mass pseudoscalars emitted from supernova (SN) 1987A would have been converted to γ-rays in the intervening magnetic field of the galaxy. Therefore, measurements by the Solar Maximum Mission (SMM) Gamma-Ray Spectrometer (GRS) can limit the inverse coupling constant to g −1 > 1 × 10 11 GeV, assuming… CONTINUE READING
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