论文标题
探索各向异性Lorentz不变性违反了伽马射线爆发的光谱滞后过渡
Exploring Anisotropic Lorentz Invariance Violation from the Spectral-Lag Transitions of Gamma-Ray Bursts
论文作者
论文摘要
观察到的伽马射线爆发（GRB）的光谱滞后已被广泛用于探索可能违反洛伦兹不变性的行为。但是，这些研究通常是通过集中在单个最高能量光子的艰难时间滞后来进行的，并忽略了源的内在时间滞后。通过分析显示阳性到阴性过渡的GRB的多光谱频谱行为，已经提出了一种测试非生物洛伦兹侵略效应的新方法。该方法既给出了对固有能量依赖性时间滞后的合理描述，又给出了对洛伦兹侵略效应的相对强大的约束。在这项工作中，我们从32 GRB的光谱延迟过渡特征中对Lorentz侵略光子分散进行了系统的搜索。通过拟合这32个GRB的频谱延迟数据，我们对各种各向同性和各向异性Lorentz竞争系数进行限制，具有质量尺寸$ d = 6 $和$ 8 $。尽管我们的分散限制与现有界限没有竞争力，但它们有望补充完整的系数空间。
The observed spectral lags of gamma-ray bursts (GRBs) have been widely used to explore possible violations of Lorentz invariance. However, these studies were generally performed by concentrating on the rough time lag of a single highest-energy photon and ignoring the intrinsic time lag at the source. A new way to test nonbirefringent Lorentz-violating effects has been proposed by analyzing the multi-photon spectral-lag behavior of a GRB that displays a positive-to-negative transition. This method gives both a plausible description of the intrinsic energy-dependent time lag and comparatively robust constraints on Lorentz-violating effects. In this work, we conduct a systematic search for Lorentz-violating photon dispersion from the spectral-lag transition features of 32 GRBs. By fitting the spectral-lag data of these 32 GRBs, we place constraints on a variety of isotropic and anisotropic Lorentz-violating coefficients with mass dimension $d=6$ and $8$. While our dispersion constraints are not competitive with existing bounds, they have the promise to complement the full coefficient space.
