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arXiv 2110.13636astro-ph.HEhep-ph
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利用MAGIC和Fermi-LAT的Blazar观测寻找类轴子粒子

Searching for Axion-Like Particles with the Blazar Observations of MAGIC and Fermi-LAT

Hai-Jun Li, Xiao-Jun Bi, Peng-Fei Yin

摘要:

利用大型大气伽玛成像切伦科夫望远镜(MAGIC)和费米大天区望远镜(Fermi-LAT)高精度测量了耀变体Markarian 421(Mrk 421)和PG 1553+113的$γ$射线谱,研究了类轴子光子振荡效应.我们调查的约束ALP参数空间使用Mrk 421和PG 1553+113的15和5个阶段的观察,分别。我们发现,与所有15个阶段的组合分析提高了Mrk 421观测的限制。由Mrk 421观测设定的组合限制排除了ALP参数区域,其中对于$\sim 8\times 10^{-9}\, {\rm eV} \lesssim m_a \lesssim 2\times 10^{-7}\rm \, eV$的ALP质量为95% $\rm C.L.$,具有$g_{aγ} \gtrsim 2 \times 10^{-11} \, \rm GeV^{-1}$的ALP-光子耦合。我们还发现,ALP假设可以略微改善某些参数区域中对PG 1553+113结果的拟合,并且在这种情况下不设定限制。

英文摘要:

We explore the axion-like particle (ALP)-photon oscillation effect in the $γ$-ray spectra of the blazars Markarian 421 (Mrk 421) and PG 1553+113, which are measured by the Major Atmospheric Gamma Imaging Cherenkov Telescopes (MAGIC) and Fermi Large Area Telescope (Fermi-LAT) with high precision. We investigate the constraints on the ALP parameter space using the Mrk 421 and PG 1553+113 observations of 15 and 5 phases, respectively. We find that the combined analysis with all the 15 phases improves the limits from the Mrk 421 observations. The combined limit set by the Mrk 421 observations has excluded the ALP parameter region with the ALP-photon coupling of $g_{aγ} \gtrsim 2 \times 10^{-11} \, \rm GeV^{-1}$ for the ALP mass of $\sim 8\times 10^{-9}\, {\rm eV} \lesssim m_a \lesssim 2\times 10^{-7}\rm \, eV$ at 95% $\rm C.L.$ We also find that the ALP hypothesis can slightly improve the fit to the PG 1553+113 results in some parameter regions, and do not set the limit in this case.

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。

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