Two new fast single radio bursts FRB 180924 and FRB 190523 well localized to massive galaxies have opened a new window to probe and characterize how cosmic baryons are allocated between galaxies, their surroundings and intergalactic medium. We are motivated by testing Einstein’s weak equivalence principle with these two cosmic transients which have accurate redshifts. Using photons with different energies emitted by FRB 180924 and FRB 190523, we obtain the bounds $\Delta \gamma <2.16\times 10^{-10}$ and $\Delta \gamma <2.55\times 10^{-10}$ by considering the gravitational potential of the Milk Way. If using the gravitational potential of the Laniakea supercluster instead of the Milk Way one, we obtain the bounds $\Delta \gamma <1.06\times 10^{-14}$ and $\Delta \gamma <1.26\times 10^{-14}$. Moreover, we estimate the effects of the swampland constant $\lambda$ and Hubble constant $H_0$ on the gravitational delays from single FRBs with known redshifts.

很好地定位于大型星系的两个新的快速单无线电脉冲FRB 180924和FRB 190523打开了一个新窗口，以探查和表征宇宙重子如何在星系，其周围环境和星系间介质之间分配。我们通过用这两个具有精确红移的宇宙瞬态测试爱因斯坦的弱等价原理来激发我们的动力。使用FRB 180924和FRB 190523发射的具有不同能量的光子，我们可以得到边界$\Delta \gamma <2。16\times \mathrm{1个}{0}^{-10}$ 和 $\Delta \gamma <2。55\times \mathrm{1个}{0}^{-10}$考虑到银河系的引力潜力。如果使用Laniakea超级集群的引力而不是银河系的引力，我们将获得边界$\Delta \gamma <\mathrm{1个}。06\times \mathrm{1个}{0}^{-14}$ 和 $\Delta \gamma <\mathrm{1个}。26\times \mathrm{1个}{0}^{-14}$。此外，我们估算了沼泽地常数的影响$\lambda$ 和哈勃常数 $H_0$ 关于具有已知红移的单个FRB的引力延迟。