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首页> 外文会议>Proceedings of the 32nd International Cosmic Ray Conference >Correlation Studies Between Ultra-high Energy Cosmic Rays and Fermi Gamma-ray Sources
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Correlation Studies Between Ultra-high Energy Cosmic Rays and Fermi Gamma-ray Sources

机译：超高能宇宙射线与费米伽马射线源之间的相关性研究

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摘要

We study possible correlations between ultrahigh energy cosmic rays (UHECRs) observed by Auger, AGASAand Yakutsk, and nearby active galactic nuclei (AGNs) and Fermi gamma-ray sources. The deflection effects by anew Galactic magnetic field (GMF) model are considered. A correlation between the Auger cosmic-ray events andnearby AGNs with a significance level of 4 sigma is found for the Auger UHECR data sets with or without deflectioncorrection. Marginal correlations between the Auger events and Fermi gamma-ray sources, and between Auger/AGASAevents and gamma-ray AGNs are found when the deflections calculated by the GMF model are considered. However, nocorrelation is found between the Yakutsk data and gamma-ray sources. Four gamma-ray loud AGNs, NGC 4945, ESO323-G77, NGC 6951, and Cen A, within 100 Mpc have UHECR events within 3 degrees from their positions, whichcould potentially be cosmic ray accelerators. A large number of unidentified gamma-ray sources could also be UHECRsource candidates.
机译：我们研究了由Auger，AGASA和Yakutsk观测到的超高能宇宙射线（UHECR）与附近的活动银河核（AGNs）和费米伽马射线源之间的可能相关性。考虑了新的银河磁场（GMF）模型的偏转效应。对于有或没有偏转校正的俄歇UHECR数据集，都发现了俄歇宇宙射线事件与具有4 sigma显着性水平的附近AGN之间的相关性。当考虑由GMF模型计算的挠度时，会发现俄歇事件与费米伽马射线源之间以及俄歇/ AGASA事件与伽马射线AGN之间的边际相关性。但是，在雅库茨克数据和伽马射线源之间没有发现相关性。 100 Mpc内的四个伽玛射线响度较高的AGN，NGC 4945，ESO323-G77，NGC 6951和Cen A的UHECR事件距离其位置在3度以内，这可能是宇宙射线加速器。大量未知的伽马射线源也可能是UHECRsource的候选者。

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