Gamma Rays from SN 1987A due to Pseudoscalar Conversion.
Gamma Rays from SN 1987A due to Pseudoscalar Conversion.
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由于赝标量转换而产生的 SN 1987A 伽马射线。
DOI：
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发表时间：
1996
影响因子：
8.6
通讯作者：
R. Toldrà
中科院分区：
文献类型：
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作者：
J. Grífols;E. Massó;R. Toldrà
一个与两个光子耦合的光赝标量将由超新星的核心大量发射。其中一部分会被星系磁场转化为伽马射线。太阳极大期任务卫星上的伽玛射线谱仪对SN1987A γ射线通量的测量已经暗示了耦合$g < 3乘以10^{-12}$ GeV$^{-1}$的一个界。改进后的一代星载探测器，如EGRET或GLAST项目，可以探测到来自附近超新星的伪标量到光子信号，允许值为$g$。
A light pseudoscalar coupled to two photons would be copiously emitted by the core of a supernova. Part of this flux would be converted to $gamma-$rays by the galactic magnetic field. Measurements on the SN1987A $gamma-$ray flux by the Gamma-Ray Spectrometer on the Solar Maximum Mission satellite already imply a bound on the coupling $g < 3 imes 10^{-12}$ GeV$^{-1}$. The improved generation of satellite-borne detectors, like EGRET or the project GLAST, could be able to detect a pseudoscalar-to-photon signal from a nearby supernova, for allowed values of $g$.