arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2403.07063astro-ph.HEastro-ph.SRhep-ph
收藏

利用太阳光子对天体物理伽马射线的吸收探测洛伦兹不变性破缺

Probing Lorentz Invariance Violation with Absorption of Astrophysical Gamma-rays by Solar Photons

Justin D. Finke, Parshad Patel

AI总结:

本研究计算了天体物理γ射线与太阳光子作用产生正负电子对的吸收光深,纳入亚光速洛伦兹不变性破缺(LIV)的阈值修正,首次发现其可改变光深,提出可利用近太阳20TeV以上γ射线源观测探测LIV。

摘要:

我们详细计算了天体物理γ射线光子与太阳光子相互作用产生电子正电子对的吸收光深。对于与太阳角距离很小的γ射线源,这一效应最为显著,光深可高达τ_γγ~10⁻²。我们还计算了包含亚光速洛伦兹不变性破缺(LIV)导致的吸收截面阈值修正后的这一效应。我们首次证明,与无LIV的情况相比,亚光速LIV可导致τ_γγ升高或降低。我们表明,至少在原理上,可通过HAWC或LHAASO对能量≳20 TeV的近太阳γ射线源的观测,利用该效应探测LIV,不过由于效应幅度很小,测量将极具挑战性。

英文摘要:

We compute in detail the absorption optical depth for astrophysical $γ$-ray photons interacting with solar photons to produce electron positron pairs. This effect is greatest for $γ$-ray sources at small angular distances from the Sun, reaching optical depths as high as $τ_{γγ}\sim 10^{-2}$. We also calculate this effect including modifications to the absorption cross section threshold from subluminal Lorentz invariance violation (LIV). We show for the first time that subluminal LIV can lead to increases or decreases in $τ_{γγ}$ compared to the non-LIV case. We show that, at least in principle, LIV can be probed with this effect with observations of $γ$-ray sources near the Sun at $\gtrsim20$ TeV by HAWC or LHAASO, although a measurement will be extremely difficult due to the small size of the effect.

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。

↑