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arXiv 1701.03097astro-ph.HEastro-ph.COhep-exhep-ph
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FRB 121102为光子质量提供了新的视角

FRB 121102 Casts New Light on the Photon Mass

Luca Bonetti, John Ellis, Nikolaos E. Mavromatos, Alexander S. Sakharov, Edward K. Sarkisyan-Grinbaum, Alessandro D. A. M. Spallicci

摘要:

一旦知道了快速射电暴的红移,光子质量$m_γ$原则上可以通过测量快速射电暴的色散测度(DM)来约束。重复FRB 121102的DM是$< 1$已知的,一个宿主星系现在已经以高置信度被识别出来,它的红移$z$现在已经以高精度被确定:$z = 0.19273(8)$。考虑到星系际介质和银河系等离子体对DM的贡献,我们利用FRB 121102的数据导出了约束$m_γ\lesssim 2.2 \times 10^{-14}$ eV c $^{-2}$($3.9 \times 10^{-50}$ kg)。由于等离子体和光子质量对DM的贡献具有不同的红移依赖性,因此原则上可以通过测量更多的FRB红移来区分它们,从而提高对$m_γ$的灵敏度。

英文摘要:

The photon mass, $m_γ$, can in principle be constrained using measurements of the dispersion measures (DMs) of fast radio bursts (FRBs), once the FRB redshifts are known. The DM of the repeating FRB 121102 is known to $< 1$\%, a host galaxy has now been identified with high confidence,and its redshift, $z$, has now been determined with high accuracy: $z = 0.19273(8)$. Taking into account the plasma contributions to the DM from the Intergalactic medium (IGM) and the Milky Way, we use the data on FRB 121102 to derive the constraint $m_γ\lesssim 2.2 \times 10^{-14}$ eV c$^{-2}$ ($3.9 \times 10^{-50}$ kg). Since the plasma and photon mass contributions to DMs have different redshift dependences, they could in principle be distinguished by measurements of more FRB redshifts, enabling the sensitivity to $m_γ$ to be improved.

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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