塞弗星系日冕宇宙射线能量预算的上限

IF 2.2 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
Yoshiyuki Inoue, Shinsuke Takasao, Dmitry Khangulyan
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引用次数: 0

摘要

冰立方合作组织报告说,可能从附近的塞弗特星系探测到了高能中微子。虽然中心热日冕被认为是产生中微子的主要场所,但确切的日冕宇宙射线能量预算一直受到松散的约束。在这项研究中,我们考虑了增生动力学和射电静止塞弗星系的观测特性,对塞弗星系的日冕宇宙射线能量预算提出了一个新的严格上限。值得注意的是,即使在宇宙射线失去所有能量的量热条件下,我们的限制也表明NGC 1068的日冕中微子通量比观测到的水平要微弱大约一个数量级。这种差异表明,有必要对来自参宿星系的冰立方信号进行进一步的理论和观测研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Upper limit on the coronal cosmic ray energy budget in Seyfert galaxies
The IceCube Collaboration has reported possible detections of high-energy neutrinos from nearby Seyfert galaxies. While central hot coronae are proposed as the primary neutrino production site, the exact coronal cosmic ray energy budget has been loosely constrained. In this study, we propose a new stringent upper bound on the coronal cosmic ray energy budget of Seyfert galaxies, considering both accretion dynamics and observed properties of radio-quiet Seyfert galaxies. Notably, even under the calorimetric condition where cosmic rays lose all their energy, our limit indicates that the coronal neutrino flux of NGC 1068 is about an order of magnitude fainter than the observed levels. This discrepancy suggests the need for further theoretical and observational investigations on the IceCube signals from Seyfert galaxies.
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来源期刊
Publications of the Astronomical Society of Japan
Publications of the Astronomical Society of Japan 地学天文-天文与天体物理
CiteScore
4.10
自引率
13.00%
发文量
98
审稿时长
4-8 weeks
期刊介绍: Publications of the Astronomical Society of Japan (PASJ) publishes the results of original research in all aspects of astronomy, astrophysics, and fields closely related to them.
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