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arXiv 2108.04609astro-ph.HE
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成分灵敏度(对于具有SWGO的Cosmic Ray各向异性)

Composition Sensitivity (for the Cosmic Ray Anisotropy with SWGO)

A. M. Taylor, G. Giacinti, P. Desiati, J. C. Diaz Velez, A. Chiavassa, G. Di Sciascio, J. C. Arteaga Velazquez, S. Kunwar

摘要:

一些宇宙射线观测站已经测量到,在初级能量为100 TeV以上的宇宙射线到达方向分布中,偶极分量的相位和振幅都发生了变化。我们专注于探测宇宙线的偶极子和多极的演变,在能量区域的多TeV超越PeV与未来的大面积伽玛射线天文台,如南方宽场伽玛射线天文台(SWGO)。区分不同质量群的能力对于理解这种进化的起源至关重要。通过考虑这样的天文台的宇宙线探测的能量和质量分辨率,我们估计其分离能力分解成质量群的全粒子各向异性。特别是,我们探索的可行性,探测偶极演化与刚性SWGO。通过这种方式,我们展示了这种仪器提供的巨大潜力,为更深入地了解宇宙射线各向异性的起源。

英文摘要:

A number of cosmic-ray observatories have measured a change in both phase and amplitude of the dipole component in the distribution of cosmic-ray arrival directions above a primary energy of 100 TeV. We focus on probing the cosmic-ray dipole and multipole evolution in the energy region of mutli TeV to beyond PeV with a future large-area gamma-ray observatory, such as the Southern Wide-field Gamma-ray Observatory (SWGO). The ability to discriminate between different mass groups is essential to understand the origin of this evolution. Through a consideration of the energy and mass resolution for cosmic-ray detection by such an observatory, we estimate its separation power for decomposing the full-particle anisotropy into mass groups. In particular, we explore the feasibility of probing the dipole evolution with rigidity with SWGO. In this way, we demonstrate the great potential that this instrument offers for providing a deeper understanding of the origin of the cosmic-ray anisotropy.

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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