A new approach to study energy-dependent arrival delays on photons from astrophysical sources

Manel Martínez; Manel Errando

doi:10.1016/j.astropartphys.2009.01.005

A new approach to study energy-dependent arrival delays on photons from astrophysical sources

Manel Martínez
, Manel Errando

Department of Physics

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

Correlations between the arrival time and the energy of photons emitted in outbursts of astrophysical objects are predicted in quantum and classical gravity scenarios and can appear as well as a result of complex acceleration mechanisms responsible for the photon emission at the source. This paper presents a robust method to study such correlations that overcomes some limitations encountered in previous analysis, and is based on a likelihood function built from the physical picture assumed for the emission, propagation and detection of the photons. The results of the application of this method to a flare of Markarian 501 observed by the MAGIC telescope are presented. The method is also applied to a simulated dataset based on the flare of PKS 2155-304 recorded by the H.E.S.S. observatory to proof its applicability to complex photon arrival time distributions.

Original language	English
Pages (from-to)	226-232
Number of pages	7
Journal	Astroparticle Physics
Volume	31
Issue number	3
DOIs	https://doi.org/10.1016/j.astropartphys.2009.01.005
State	Published - Apr 2009

Keywords

Active galactic nuclei
H.E.S.S.
Lorentz invariance
MAGIC
Quantum gravity
Very high energy gamma rays

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10.1016/j.astropartphys.2009.01.005

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title = "A new approach to study energy-dependent arrival delays on photons from astrophysical sources",

abstract = "Correlations between the arrival time and the energy of photons emitted in outbursts of astrophysical objects are predicted in quantum and classical gravity scenarios and can appear as well as a result of complex acceleration mechanisms responsible for the photon emission at the source. This paper presents a robust method to study such correlations that overcomes some limitations encountered in previous analysis, and is based on a likelihood function built from the physical picture assumed for the emission, propagation and detection of the photons. The results of the application of this method to a flare of Markarian 501 observed by the MAGIC telescope are presented. The method is also applied to a simulated dataset based on the flare of PKS 2155-304 recorded by the H.E.S.S. observatory to proof its applicability to complex photon arrival time distributions.",

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AU - Martínez, Manel

AU - Errando, Manel

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AB - Correlations between the arrival time and the energy of photons emitted in outbursts of astrophysical objects are predicted in quantum and classical gravity scenarios and can appear as well as a result of complex acceleration mechanisms responsible for the photon emission at the source. This paper presents a robust method to study such correlations that overcomes some limitations encountered in previous analysis, and is based on a likelihood function built from the physical picture assumed for the emission, propagation and detection of the photons. The results of the application of this method to a flare of Markarian 501 observed by the MAGIC telescope are presented. The method is also applied to a simulated dataset based on the flare of PKS 2155-304 recorded by the H.E.S.S. observatory to proof its applicability to complex photon arrival time distributions.

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KW - H.E.S.S.

KW - Lorentz invariance

KW - MAGIC

KW - Quantum gravity

KW - Very high energy gamma rays

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A new approach to study energy-dependent arrival delays on photons from astrophysical sources

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Keywords

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