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Constraints on the Photon Mass with Fast Radio Bursts
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abstract
Fast radio bursts (FRBs) are radio bursts characterized by millisecond durations, high Galactic latitude positions, and high dispersion measures. Very recently, the cosmological origin of FRB 150418 has been confirmed by \cite{kea16}, and FRBs are now strong competitors as cosmological probes. The simple sharp feature of the FRB signal is ideal for them to probe some of the fundamental laws of physics. Here we show that by analyzing the delay time between different frequencies, the FRB data can place stringent upper limits on the rest mass of the photon. For FRB 150418 at $z=0.492$, one can potentially reach $m_{\gamma} \leq 5.2 \times 10^{-47}$ g, which is $10^{20}$ times smaller than the rest mass of electron, and is about $10^3$ times smaller than that obtained using other astrophysical sources with the same method.
Forward citations
Cited by 3 Pith papers
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Bounding the photon mass with gravitationally lensed fast radio bursts
Using the time delay and flux ratio of the lensed FRB candidate FRB 20190308C, the authors derive an upper bound on the photon mass of 5.3e-42 kg for a lens shear of 0.01, and between 2.4e-42 and 2.1e-41 kg over the a...
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Constraints on Primordial Black Hole Dressed by Dark Matter Halo from Microlensing Effect of Fast Radio Bursts
A new conversion formula turns monochromatic bare-PBH microlensing bounds into extended-mass dressed-PBH bounds, and a 10^5-FRB forecast places f_PBH near 10^-4.
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Constraining the Baryon Fraction in Extragalactic Diffuse Ionized Gas with 124 Localized Fast Radio Bursts
Analyzing 92 localized FRBs with a Jacobian-corrected IGM dispersion PDF plus CMB, BAO, and supernova data gives f_IGM = 0.864 ± 0.041 (YMW16, ΛCDM); the abstract's '124 bursts, f_d > 90%' headline is not supported by...
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