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Limits to quantum gravity effects on energy dependence of the speed of light from observations of TeV flares in active galaxies

Abstract:

We have used data from a TeV γ-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 1016 GeV. The limits derived here indicate this energy scale to be in excess of 6 × 1016 GeV for at least one approach to quantum gravity in the context ...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevLett.83.2108

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Particle Physics
Breslin, AC More by this author
Buckley, J More by this author
Catanese, M More by this author
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Journal:
PHYSICAL REVIEW LETTERS
Volume:
83
Issue:
11
Pages:
2108-2111
Publication date:
1999-09-13
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:3afeb773-ad16-48ca-8a81-57d90bef21c4
Source identifiers:
26764
Local pid:
pubs:26764

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