论文标题
九个局部快速无线电爆发的光子质量的总限制
Combined Limit on the Photon Mass with Nine Localized Fast Radio Bursts
论文作者
论文摘要
光子的非零质量假设可以产生光的频率分散，从而导致具有不同频率的光子的到达时间差异来自给定的瞬态源。外乳外快速无线电爆发（FRB），其低频排放，短时间持续时间和较长的传播距离是极好的天体物理探针，可限制光子$M_γ$的其余质量。但是，$M_γ$的限制的推导因血浆和非零光子质量效应的相似频率依赖性而变得复杂。如果可用的红移量少数测量值，则血浆和光子质量对色散度量（DM）的不同红移依赖性可能能够在测试光子质量时打破分散性堕落。目前，已经报道了9个具有红移测量值的FRB，这可以将此想法变为现实。考虑到血浆和可能的光子质量的DM贡献，我们使用九个FRB上的数据来得出$M_γ\ leq7.1 \ times10^{ - 51} \; {\ rm kg} $的组合限制，或等效地$M_γ\ leq \ leq \ leq \ leq \ leq \ leq \ leq \ leq \ leq \ leq \ leq \ leq times10^} {\ rm ev}/c^{2} $在68 \％的置信度下，这基本上与单个FRB所获得的先前限制相比，它与或代表7倍的倍数。此外，在我们的分析中，可以同时实现主机银河系的DM贡献的合理估计。定位FRB的快速进展将进一步收紧$M_γ$和$ \ rm dm_ {host} $的约束。
A nonzero-mass hypothesis for the photon can produces a frequency-dependent dispersion of light, which results in arrival-time differences of photons with different frequencies originating from a given transient source. Extragalactic fast radio bursts (FRBs), with their low frequency emissions, short time durations, and long propagation distances, are excellent astrophysical probes to constrain the rest mass of the photon $m_γ$. However, the derivation of a limit on $m_γ$ is complicated by the similar frequency dependences of dispersion expected from the plasma and nonzero photon mass effects. If a handful measurements of redshift for FRBs are available, the different redshift dependences of the plasma and photon mass contributions to the dispersion measure (DM) might be able to break dispersion degeneracy in testing the photon mass. For now, nine FRBs with redshift measurements have been reported, which can turn this idea into reality. Taking into account the DM contributions from both the plasma and a possible photon mass, we use the data on the nine FRBs to derive a combined limit of $m_γ\leq7.1\times10^{-51}\;{\rm kg}$, or equivalently $m_γ\leq4.0\times10^{-15}\; {\rm eV}/c^{2}$ at 68\% confidence level, which is essentially as good as or represents a factor of 7 improvement over previous limits obtained by the single FRBs. Additionally, a reasonable estimation for the DM contribution from the host galaxy, $\rm DM_{host}$, can be simultaneously achieved in our analysis. The rapid progress in localizing FRBs will further tighten the constraints on both $m_γ$ and $\rm DM_{host}$.
