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

被引:146
作者
Brockway, JW [1 ]
Carlson, ED [1 ]
Raffelt, GG [1 ]
机构
[1] MAX PLANCK INST PHYS & ASTROPHYS, WERNER HEISENBERG INST, D-80805 MUNICH, GERMANY
关键词
D O I
10.1016/0370-2693(96)00778-2
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Pseudoscalar particles phi usually couple electromagnetically by an interaction of the form 1/4g phi F (F) over tilde, 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 gamma-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) > 1x10(11) GeV, assuming the pseudoscalar is massless. This is an improvement over other astrophysical limits of a factor of about 2.5.
引用
收藏
页码:439 / 443
页数:5
相关论文
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