arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0707.2695astro-phhep-ph
收藏

类轴子粒子、宇宙磁场与Gamma-Ray天体物理

Axion-Like Particles, Cosmic Magnetic Fields and Gamma-Ray Astrophysics

Alessandro De Angelis, Oriana Mansutti, Marco Roncadelli

摘要:

类轴子粒子(Axion-Like Particles,ALP)是由标准模型的许多扩展所预言的,它在磁场中传播的光束中产生特征性的变暗和偏振效应。在这封信中,我们证明,光子ALP混合在宇宙磁场产生一个可观察到的扭曲的能量谱的遥远的伽马射线源(如活动星系核)的ALP参数范围内允许的所有可用的限制。由此产生的效应预计将出现在100 MeV - 100 GeV的能带中,因此它可以与即将到来的GLAST任务一起研究。

英文摘要:

Axion-Like Particles (ALPs) are predicted by many extensions of the Standard Model and give rise to characteristic dimming and polarization effects in a light beam travelling in a magnetic field. In this Letter, we demonstrate that photon-ALP mixing in cosmic magnetic fields produces an observable distortion in the energy spectra of distant gamma-ray sources (like AGN) for ranges of the ALP parameters allowed by all available constraints. The resulting effect is expected to show up in the energy band 100 MeV - 100 GeV, and so it can be serched with the upcoming GLAST mission.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑