GRB 051221A and Tests of Lorentz Symmetry
| Autor: | Yonatan Oren, Tsvi Piran, María Rodríguez Martínez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Physics
Photon Astrophysics::High Energy Astrophysical Phenomena Astrophysics (astro-ph) FOS: Physical sciences Astronomy and Astrophysics Lorentz covariance Light curve Astrophysics Upper and lower bounds Momentum High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Dispersion relation Quantum electrodynamics Quantum gravity Gamma-ray burst |
| Popis: | Various approaches to quantum gravity suggest the possibility of violation of Lorentz symmetry at very high energies. In these cases we expect a modification at low energies of the dispersion relation of photons that contains extra powers of the momentum suppressed by a high energy scale. These terms break boost invariance and can be tested even at relatively low energies. We use the light curves of the very bright short Gamma-Ray Burst GRB 051221A and compare the arrival times of photons at different energies with the expected time delay due to a modified dispersion relation. As no time delay was observed, we set a lower bound of 0.0066 E_{pl} \sim 0.66 10^{17} GeV on the scale of Lorentz invariance violation. 9 pages, 2 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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