Revised constraints on the photon mass from well-localized fast radio bursts

Understand

We constrain the photon mass from well-localized fast radio bursts (FRBs) using Bayes inference method.

• The probability distributions of dispersion measures (DM) of host galaxy and intergalactic medium are properly taken into account.
• The photon mass is tightly constrained from 17 well-localized FRBs in the redshift range $0<z<0.66$.
• Assuming that there is no redshift evolution of host DM, the $1\sigma$ and $2\sigma$ upper limits of photon mass are constrained to be $m_\gamma<4.8\times 10^{-51}$ kg and $m_\gamma<7.1\times 10^{-51}$ kg, respectively.