Abstract
The observation of the time delay between the soft emission and the high-energy radiation from cosmological gamma ray bursts can be used as an important observational test of multidimensional physical theories. The main source of the time delay is the variation of the electromagnetic coupling, due to dimensional reduction, which induces an energy dependence of the speed of light. For photons with energies around 1 TeV, the time delay could range from a few seconds in the case of Kaluza—Klein models to a few days for models with large extra-dimensions. Based on these results we suggest that the detection of the 18-GeV photon ∼4500 s after the keV/MeV burst in GRB 940217 provides a strong evidence for the existence of extra-dimensions. The time delay of photons, if observed by the next generation of high energy detectors, like, for example, the SWIFT and GLAST satellite based detectors, or the VERITAS ground-based TeV gamma-ray instrument, could differentiate between the different models with extra-dimensions.
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References
Chen, C.-M., Harko, T., Kao, W.F. and Mak, M.K.: 2002, Nucl. Phys. B 636(1), 159.
Ellis, J., Farakos, K., Mavromatos, N.E., Mitsou, V. and Nanopoulos, D.V.: 2000, Astrophys. J. 535(1), 139.
Ellis, J., Mavromatos, N.E., Nanopoulos, D.V. and Sakharov, A.S.: 2003, A&A 10(11), 931.
Forgacs, P. and Horvath, Z.: 1979, Gen. Relativity Gravit., 11(3), 205.
Harko, T. and Cheng, K.S.: 2004, Astrophys. J. 611, 633.
Horava, P. and Witten, E.: 1996, Nuclear Physics B 475(1), 94.
Hurley, K. et al.: 1994, Nature 372(1), 652.
Stecker, F.W., de Jager, O.C. and Salamon, M.H.: 1992, Astrophys. J. 390(2), L49.
Wang, X.Y., Cheng, K.S., Dai, Z.G. and Lu, T.: 2004, Astrophys. J. 604(1), 306.
Weekes, T.C.: 2004a, TeV Gamma-ray Observations and the Origin of Cosmic Rays. Plenary Talk at the 28th International Cosmic Ray Conference (Tsukuba, Japan), astro-ph/0312179.
Weekes, T.C.: 2004b, The next generation of ground-based TeV gamma-ray instruments and the identification of high-energy gamma-ray sources. In: K.S. Cheng and G.E. Romero (eds.) Cosmic γ-ray sources, Kluwer Academic Publishers, Dordrecht, 345.
Witten, E.: 1996, Nucl. Phys. B, 460(2), 335.
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Harko, T., Cheng, K. (2005). Constraints on Extra-Dimensions and Variable Constants from Cosmological Gamma-Ray Bursts. In: Cheng, K., Romero, G. (eds) Multiwavelength Approach to Unidentified Gamma-Ray Sources. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3881-X_32
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DOI: https://doi.org/10.1007/1-4020-3881-X_32
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