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 allowed shear range.
Constraining new fundamental physics with multiwavelength astrometry
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
While the deflection of light is achromatic in General Relativity, it is not always so in several new-physics models (e.g. certain quantum-gravity and string-inspired models, models with nonminimal photon-gravity coupling or with massive photon etc.). We discuss how parameters of these models may be constrained by precise astrometry at different wavelenghts. From published observations of the gravitational lens MG J2016+112, we obtain world-best limits on chromatic gravitational deflection of light (and the unique limit on the photon mass relevant for distance scales >Mpc). We also outline prospects for further improvement of these limits.
citation-role summary
background 1
citation-polarity summary
fields
astro-ph.HE 1years
2024 1verdicts
CONDITIONAL 1roles
background 1polarities
unclear 1representative citing papers
citing papers explorer
-
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 allowed shear range.