Abstract
The discovery of X-ray afterglows of GRBs, and the identification of host galaxies of GRBs, confirm the cosmological origin of GRBs. However, the discovery of the delayed MeV–GeV photons in GRB940217 imposes serious challenges for the standard emission model of GRB. Although the delayed MeV–GeV photons might be explained by some radiation emission mechanisms, the mystery of detecting an 18GeV photon still remains unsolved. We suggest that the detection of the 18GeV photon ∼4500s after the keV/MeV burst in GRB 940217 provides a strong evidence for the existence of extra-dimensions and/or quantum gravity effects. The delay scale of the 18GeV photon leads to an estimation of the fundamental energy scale, associated with the linear energy dependence of the speed of light, of the order of 2.1×1015GeV, which is consistent with the results obtained by another independent analysis on the data of OSSE and BATSE.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
