| Full text | |
| Author(s): |
Lang, Rodrigo Guedes
;
Martinez-Huerta, Humberto
;
de Souza, Vitor
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 99, n. 4, p. 9-pg., 2019-02-28. |
| Abstract | |
Lorentz invariance (LI) has a central role in science and its violation (LIV) at some high-energy scale has been related to possible solutions for several of the most intriguing puzzles in nature such as dark matter, dark energy, cosmic rays generation in extreme astrophysical objects and quantum gravity. We report on a search for LIV signal based on the propagation of gamma rays from astrophysical sources to Earth. An innovative data analysis is presented which allowed us to extract unprecedented information from the most updated data set composed of 111 energy spectra of 38 different sources measured by current gamma-ray observatories. No LIV signal was found, and we show that the data are best described by LI assumption. We derived limits for the LIV energy scale at least 3 times better than the ones currently available in the literature for subluminal signatures of LIV in high-energy gamma rays. (AU) | |
| FAPESP's process: | 17/03680-3 - Lorentz invariance breaking test with astroparticles |
| Grantee: | Humberto Martínez Huerta |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 16/24943-0 - New physics in astroparticle physics: dark matter and Lorentz invariance |
| Grantee: | Rodrigo Guedes Lang |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 15/15897-1 - Cherenkov Telescope Array - CTA |
| Grantee: | Luiz Vitor de Souza Filho |
| Support Opportunities: | Research Projects - Thematic Grants |