Cited by 269Noncommutative and Quantum Gravity TheoriesAstrophysics and Cosmic PhenomenaBlack Holes and Theoretical Physics

Limits to Quantum Gravity Effects on Energy Dependence of the Speed of Light from Observations of TeV Flares in Active Galaxies

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Biller, S. D., Breslin, A. C., Buckley, J., Catanese, M., Carson, M., Carter-Lewis, D. A., Cawley, M. F., Fegan, D. J. +16 more·1999·Physical Review Letters

Abstract

We have used data from a TeV $\ensuremath{\gamma}$-ray flare associated with the active galaxy Markarian 421 to place bounds on the possible energy dependence of the speed of light in the context of an effective quantum gravitational energy scale. Recent theoretical work suggests that such an energy scale could be less than the Planck mass and perhaps as low as ${10}^{16}$ GeV. The limits derived here indicate this energy scale to be in excess of $6\ifmmode\times\else\texttimes\fi{}{10}^{16}$ GeV for at least one approach to quantum gravity in the context of D-brane string theory. To the best of our knowledge, this constitutes the first convincing limit on such phenomena in this energy regime.

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  • Combining the Markarian 421 flare observations, assuming the flare was emitted from the same event at the source, yields the limit |f(3)| < 128.

    “If we assume that the flare was emitted from the same event at the source, the time of arrival delay between 1TeV and 2TeV photons must be less than 280 s. Combining all these factors yields the limit |f(3)| < 128.”

    From Modern Tests of Lorentz Invariance (2005) · cites this paper as [53]

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  1. [3][3] Gambini, Rodolfo and Pullin, George, preprint gr-qc/9809038 - · arXiv
  2. [13][13] Biller, S. D., PhD thesis, University of California, 1992 Figure 1: TeV γ -ray flare from Markarian 421 observed on 15 May 1996 by the Whipple γ -ray observatory. The rate of excess γ -ray selected events is binned in intervals of 280 seconds. (taken from reference [11]) <!-- image --> Figure 2: Total number of γ -ray selected events occurring in each 280 second interval near the peak of the 15 May 1996 flare from Markarian 421. The top plot consists of events with γ -ray energies less than 1 TeV, whereas the bottom plot is for energies greater than 2 TeV. <!-- image -->

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Authors
Biller, S. D., Breslin, A. C., Buckley, J., Catanese, M., Carson, M., Carter-Lewis, D. A., Cawley, M. F., Fegan, D. J., Finley, J. P., Gaidos, J. A., Hillas, A. M., Krennrich, F., Lamb, R. C., Lessard, R., Masterson, C., McEnery, J. E., McKernan, B., Moriarty, P., Quinn, J., Rose, H. J., Samuelson, F., Sembroski, G., Skelton, P., & Weekes, T. C.
Affiliations
  • University of Oxford (GB)
  • University College Dublin (IE)
  • Washington University in St. Louis (US)
  • Iowa State University (US)
  • National University of Ireland, Maynooth (IE)
  • Purdue University West Lafayette (US)
  • University of Leeds (GB)
  • California Institute of Technology (US)
  • University of Utah (US)
  • Galway-Mayo Institute of Technology (IE)
  • Smithsonian Institution (US)
Venue
Physical Review Letters
Published
1999-09-13
Volume
83
Issue
11
Pages
2108-2111
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2097552733
Cited by
269
References
11
Citations by year
2026: 1 · 2025: 3 · 2024: 5 · 2023: 4 · 2022: 4 · 2021: 6 · 2020: 5 · 2019: 5 · 2018: 17 · 2017: 5 · 2016: 5 · 2015: 6 · 2014: 3 · 2013: 5 · 2012: 12
FWCI
14.79
Type
journal article
Language
en
Open access
Locations
  • Physical Review Letters (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • ARAN (University of Galway Research Repository) (Ollscoil na Gaillimhe – University of Galway) (submittedVersion, cc-by-nc-nd)
  • Arrow@dit (Dublin Institute of Technology) (submittedVersion)
  • ARAN (University of Galway Research Repository) (Ollscoil na Gaillimhe – University of Galway) (submittedVersion, cc-by-nc)
  • arXiv (Cornell University)
  • Research Repository UCD (University College Dublin) (cc-by-nc)
Topics
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Astrophysics and Cosmic Phenomena
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
Keywords
quantum gravity, energy-dependent speed of light, TeV gamma-ray flares, Markarian 421, active galactic nuclei, high-energy gamma rays

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