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| 基于耀变体1ES1218+304观测对类轴子的约束 |
| Constraints on Axion-Like Particles Based on Observations of the Blazar 1ES1218+304 |
| 投稿时间：2025-01-07 修订日期：2025-02-28 |
| DOI： |
| 中文关键词: 类轴子 能谱 伽马射线 1ES1218+304 |
| 英文关键词:axion-like particles energy spectrum gamma-ray 1ES1218+304 |
| 基金项目:无 |
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| 中文摘要: |
| 类轴子和光子在磁场中会相互转化，导致测量到的能谱不规则。本文利用Fermi-LAT和IACTs（高能宇宙射线望远镜）对耀变体1ES1218+304在2008年08月04日至2020年09月20日的高能伽马射线观测数据，结合高能物理CLs统计方法，对类轴子的参数进行了约束分析。研究结果表明，当类轴子质量接近10^-8 eV时，其耦合常数的约束为8.6?10^-12 GeV^-1。这一结果为类轴子的探索提供了新的参数排除区间，并对现有研究成果进行了补充。 |
| 英文摘要: |
| Axion-like particles (ALPs) can convert into photons in the presence of a magnetic field, leading to irregularities in the measured energy spectrum. In this study, we use high-energy gamma-ray observation data of the blazar 1ES1218+304 from 2008-08-04 to 2020-09-20, obtained with Fermi-LAT and IACTs (Imaging Atmospheric Cherenkov Telescopes). Applying the CLs method in high-energy physics, we perform a constraint analysis on the ALP parameters. The results indicate that when the ALP mass is close to 10^-8 eV , its coupling constant is constrained to be 8.6?10^-12 GeV^-1 . This result provides new exclusion limits for the exploration of ALP and complements existing research findings. |
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