Robust Limits on Lorentz Violation from Gamma-Ray Bursts
Astropart.Phys.25:402-411,2006; Astropart.Phys.29:158-159,2008 We constrain the possibility of a non-trivial refractive index in free space corresponding to an energy-dependent velocity of light: c(E) \simeq c_0 (1 - E/M), where M is a mass scale that might represent effect of quantum-gravitational...
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| creator | Ellis, John Mavromatos, Nick E Nanopoulos, Dimitri V Sakharov, Alexander S Sarkisyan, Edward K. G |
| description | Astropart.Phys.25:402-411,2006; Astropart.Phys.29:158-159,2008 We constrain the possibility of a non-trivial refractive index in free space
corresponding to an energy-dependent velocity of light: c(E) \simeq c_0 (1 -
E/M), where M is a mass scale that might represent effect of
quantum-gravitational space-time foam, using the arrival times of sharp
features observed in the intensities of radiation with different energies from
a large sample of gamma-ray bursters (GRBs) with known redshifts. We use
wavelet techniques to identify genuine features, which we confirm in
simulations with artificial added noise. Using the weighted averages of the
time-lags calculated using correlated features in all the GRB light curves, we
find a systematic tendency for more energetic photons to arrive earlier.
However, there is a very strong correlation between the parameters
characterizing an intrinsic time-lag at the source and a distance-dependent
propagation effect. Moreover, the significance of the earlier arrival times is
less evident for a subsample of more robust spectral structures. Allowing for
intrinsic stochastic time-lags in these features, we establish a statistically
robust lower limit: M > 0.9x10^{16} GeV on the scale of violation of Lorentz
invariance. |
| doi_str_mv | 10.48550/arxiv.astro-ph/0510172 |
| format | Article |
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corresponding to an energy-dependent velocity of light: c(E) \simeq c_0 (1 -
E/M), where M is a mass scale that might represent effect of
quantum-gravitational space-time foam, using the arrival times of sharp
features observed in the intensities of radiation with different energies from
a large sample of gamma-ray bursters (GRBs) with known redshifts. We use
wavelet techniques to identify genuine features, which we confirm in
simulations with artificial added noise. Using the weighted averages of the
time-lags calculated using correlated features in all the GRB light curves, we
find a systematic tendency for more energetic photons to arrive earlier.
However, there is a very strong correlation between the parameters
characterizing an intrinsic time-lag at the source and a distance-dependent
propagation effect. Moreover, the significance of the earlier arrival times is
less evident for a subsample of more robust spectral structures. Allowing for
intrinsic stochastic time-lags in these features, we establish a statistically
robust lower limit: M > 0.9x10^{16} GeV on the scale of violation of Lorentz
invariance.</description><identifier>DOI: 10.48550/arxiv.astro-ph/0510172</identifier><language>eng</language><subject>Physics - Astrophysics of Galaxies ; Physics - Cosmology and Nongalactic Astrophysics ; Physics - Earth and Planetary Astrophysics ; Physics - General Relativity and Quantum Cosmology ; Physics - High Energy Astrophysical Phenomena ; Physics - High Energy Physics - Phenomenology ; Physics - High Energy Physics - Theory ; Physics - Instrumentation and Methods for Astrophysics ; Physics - Solar and Stellar Astrophysics</subject><creationdate>2005-10</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,776,881</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/astro-ph/0510172$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.astro-ph/0510172$$DView paper in arXiv$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.1016/j.astropartphys.2006.04.001 10.1016/j.astropartphys.2007.12.003$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink></links><search><creatorcontrib>Ellis, John</creatorcontrib><creatorcontrib>Mavromatos, Nick E</creatorcontrib><creatorcontrib>Nanopoulos, Dimitri V</creatorcontrib><creatorcontrib>Sakharov, Alexander S</creatorcontrib><creatorcontrib>Sarkisyan, Edward K. G</creatorcontrib><title>Robust Limits on Lorentz Violation from Gamma-Ray Bursts</title><description>Astropart.Phys.25:402-411,2006; Astropart.Phys.29:158-159,2008 We constrain the possibility of a non-trivial refractive index in free space
corresponding to an energy-dependent velocity of light: c(E) \simeq c_0 (1 -
E/M), where M is a mass scale that might represent effect of
quantum-gravitational space-time foam, using the arrival times of sharp
features observed in the intensities of radiation with different energies from
a large sample of gamma-ray bursters (GRBs) with known redshifts. We use
wavelet techniques to identify genuine features, which we confirm in
simulations with artificial added noise. Using the weighted averages of the
time-lags calculated using correlated features in all the GRB light curves, we
find a systematic tendency for more energetic photons to arrive earlier.
However, there is a very strong correlation between the parameters
characterizing an intrinsic time-lag at the source and a distance-dependent
propagation effect. Moreover, the significance of the earlier arrival times is
less evident for a subsample of more robust spectral structures. Allowing for
intrinsic stochastic time-lags in these features, we establish a statistically
robust lower limit: M > 0.9x10^{16} GeV on the scale of violation of Lorentz
invariance.</description><subject>Physics - Astrophysics of Galaxies</subject><subject>Physics - Cosmology and Nongalactic Astrophysics</subject><subject>Physics - Earth and Planetary Astrophysics</subject><subject>Physics - General Relativity and Quantum Cosmology</subject><subject>Physics - High Energy Astrophysical Phenomena</subject><subject>Physics - High Energy Physics - Phenomenology</subject><subject>Physics - High Energy Physics - Theory</subject><subject>Physics - Instrumentation and Methods for Astrophysics</subject><subject>Physics - Solar and Stellar Astrophysics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNpjYJA3NNAzsTA1NdBPLKrILNNLLC4pytctyNA3MDU0MDQ34mSwCMpPKi0uUfDJzM0sKVbIz1PwyS9KzSupUgjLzM9JLMkEiqQV5ecquCfm5ibqBiVWKjiVFhWXFPMwsKYl5hSn8kJpbgZVN9cQZw9dsE3xBUWZuYlFlfFgG-MLMuKhNhoTqw4Ayi88QQ</recordid><startdate>20051006</startdate><enddate>20051006</enddate><creator>Ellis, John</creator><creator>Mavromatos, Nick E</creator><creator>Nanopoulos, Dimitri V</creator><creator>Sakharov, Alexander S</creator><creator>Sarkisyan, Edward K. G</creator><scope>GOX</scope></search><sort><creationdate>20051006</creationdate><title>Robust Limits on Lorentz Violation from Gamma-Ray Bursts</title><author>Ellis, John ; Mavromatos, Nick E ; Nanopoulos, Dimitri V ; Sakharov, Alexander S ; Sarkisyan, Edward K. G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-arxiv_primary_astro_ph_05101723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Physics - Astrophysics of Galaxies</topic><topic>Physics - Cosmology and Nongalactic Astrophysics</topic><topic>Physics - Earth and Planetary Astrophysics</topic><topic>Physics - General Relativity and Quantum Cosmology</topic><topic>Physics - High Energy Astrophysical Phenomena</topic><topic>Physics - High Energy Physics - Phenomenology</topic><topic>Physics - High Energy Physics - Theory</topic><topic>Physics - Instrumentation and Methods for Astrophysics</topic><topic>Physics - Solar and Stellar Astrophysics</topic><toplevel>online_resources</toplevel><creatorcontrib>Ellis, John</creatorcontrib><creatorcontrib>Mavromatos, Nick E</creatorcontrib><creatorcontrib>Nanopoulos, Dimitri V</creatorcontrib><creatorcontrib>Sakharov, Alexander S</creatorcontrib><creatorcontrib>Sarkisyan, Edward K. G</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Ellis, John</au><au>Mavromatos, Nick E</au><au>Nanopoulos, Dimitri V</au><au>Sakharov, Alexander S</au><au>Sarkisyan, Edward K. G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Robust Limits on Lorentz Violation from Gamma-Ray Bursts</atitle><date>2005-10-06</date><risdate>2005</risdate><abstract>Astropart.Phys.25:402-411,2006; Astropart.Phys.29:158-159,2008 We constrain the possibility of a non-trivial refractive index in free space
corresponding to an energy-dependent velocity of light: c(E) \simeq c_0 (1 -
E/M), where M is a mass scale that might represent effect of
quantum-gravitational space-time foam, using the arrival times of sharp
features observed in the intensities of radiation with different energies from
a large sample of gamma-ray bursters (GRBs) with known redshifts. We use
wavelet techniques to identify genuine features, which we confirm in
simulations with artificial added noise. Using the weighted averages of the
time-lags calculated using correlated features in all the GRB light curves, we
find a systematic tendency for more energetic photons to arrive earlier.
However, there is a very strong correlation between the parameters
characterizing an intrinsic time-lag at the source and a distance-dependent
propagation effect. Moreover, the significance of the earlier arrival times is
less evident for a subsample of more robust spectral structures. Allowing for
intrinsic stochastic time-lags in these features, we establish a statistically
robust lower limit: M > 0.9x10^{16} GeV on the scale of violation of Lorentz
invariance.</abstract><doi>10.48550/arxiv.astro-ph/0510172</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - General Relativity and Quantum Cosmology Physics - High Energy Astrophysical Phenomena Physics - High Energy Physics - Phenomenology Physics - High Energy Physics - Theory Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics |
| title | Robust Limits on Lorentz Violation from Gamma-Ray Bursts |
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