Quantum-Spacetime Scenarios and Soft Spectral Lags of the Remarkable GRB130427A
Joint Authors
Amelino-Camelia, Giovanni
Fiore, Fabrizio
Puccetti, Simonetta
Guetta, Dafne
Source
Advances in High Energy Physics
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-01-20
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
We process the Fermi LAT data on GRB130427A using the Fermi Science Tools, and we summarize some of the key facts that render this observation truly remarkable.
We then perform a search of spectral lags, of the type that has been of interest for its relevance in quantum-spacetime research.
We do find some evidence of systematic soft spectral lags: when confining the analysis to photons of energies greater than 5 GeV there is an early hard development of minibursts within the burst.
The effect is well characterized by a linear dependence, within such a miniburst, of the detection time on energy.
We also observe that some support for these features is noticeable also in earlier Fermi-LAT GRBs.
Some aspects of the comparison of these features for GRBs at different redshifts could be described within a quantum-spacetime picture, but taking into account results previously obtained by other studies we favour the interpretation as intrinsic properties of GRBs.
Even if our spectral lags do turn out to have astrophysical origin their understanding will be important for quantum-spacetime research, since any attempt to reveal minute quantum-spacetime-induced spectral lags evidently requires a good understanding of intrinsic mechanisms at the sources that can produce spectral lags.
American Psychological Association (APA)
Amelino-Camelia, Giovanni& Fiore, Fabrizio& Guetta, Dafne& Puccetti, Simonetta. 2014. Quantum-Spacetime Scenarios and Soft Spectral Lags of the Remarkable GRB130427A. Advances in High Energy Physics،Vol. 2014, no. 2014, pp.1-16.
https://search.emarefa.net/detail/BIM-483897
Modern Language Association (MLA)
Amelino-Camelia, Giovanni…[et al.]. Quantum-Spacetime Scenarios and Soft Spectral Lags of the Remarkable GRB130427A. Advances in High Energy Physics No. 2014 (2014), pp.1-16.
https://search.emarefa.net/detail/BIM-483897
American Medical Association (AMA)
Amelino-Camelia, Giovanni& Fiore, Fabrizio& Guetta, Dafne& Puccetti, Simonetta. Quantum-Spacetime Scenarios and Soft Spectral Lags of the Remarkable GRB130427A. Advances in High Energy Physics. 2014. Vol. 2014, no. 2014, pp.1-16.
https://search.emarefa.net/detail/BIM-483897
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-483897