Severe Limits on Variations of the Speed of Light with Frequency
| dc.creator | Schaefer, Bradley E. | |
| dc.date | 1998-10-29 | |
| dc.date.accessioned | 2026-07-07T12:01:08Z | |
| dc.date.available | 2026-07-07T12:01:08Z | |
| dc.description | Explosive astrophysical events at high red shift can be used to place severe limits on the fractional variation in the speed of light ($Δc/c$), the photon mass ($m_γ$), and the energy scale of quantum gravity ($E_{QG}$). I find $Δc/c < 6.3 \times 10^{-21}$ based on the simultaneous arrival of a flare in GRB 930229 with a rise time of $220 \pm 30 μs$ for photons of 30 keV and 200 keV. The limit on $m_γ$ is $4.2 \times 10^{-44} g$ for GRB 980703 from radio to gamma ray observations. The limit on $E_{QG}$ is $8.3 \times 10^{16}$ GeV for GRB 930131 from 30 keV to 80 MeV photons. | |
| dc.description | 7 pages, Submitted to PRL | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9810479 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9810479 | |
| dc.identifier | Phys.Rev.Lett.82:4964-4966,1999 | |
| dc.identifier | doi:10.1103/PhysRevLett.82.4964 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207004 | |
| dc.subject | Astrophysics | |
| dc.title | Severe Limits on Variations of the Speed of Light with Frequency | |
| dc.type | text |