Robust constraints on Lorentz Invariance Violation from H.E.S.S., MAGIC and VERITAS data combination

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  • uploaded June 26, 2021

Discussion timeslot (ZOOM-Meeting): 20. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/96969970711
ZOOM-Meeting ID: 96969970711
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/57-New-Physics-CRD-CRI-DM-GAD-GAI-NU-MM-SH/90
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-07/8

Abstract:
'Gamma-Ray bursts, flaring active galactic nuclei and pulsars are distant and energetic astrophysical sources, detected up to tens of TeV with Imaging Atmospheric Cherenkov Telescopes (IACTs). Due to their high variability, they are the most suitable sources for energy-dependent time-delay searches related to Lorentz Invariance Violation (LIV) predicted by some Quantum Gravity (QG) models. However, these studies require large datasets. A working group between the three major IACTs ground experiments - H.E.S.S., MAGIC and VERITAS - has been formed to address this issue and combine for the first time all the relevant data collected by the three experiments in a joint analysis.rnThis presentation will review the new standard combination method. The likelihood technique used to deal with data from different source types and instruments will be presented, as well as the way systematic uncertainties are taken into account. The method has been developed and tested using simulations based on published source observations from the three experiments. From these simulations, the performance of the method will be assessed and new light will be shed on time delays dependencies with redshift.'

Authors: Christelle Levy | Julien Bolmont | Sami Caroff | Markus Gaug | Alasdair Gent | Agnieszka Jacholkowska | Daniel Kerszberg | Tony Lin | Manel Martinez | Leyre Nogués | Nepomuk Otte | Cédric Perennes | Michele Ronco | Tomislav Terzić
Collaboration: H.E.S.S.MAGIC, VERITAS,

Indico-ID: 164
Proceeding URL: https://pos.sissa.it/395/695

Tags:
Presenter: Christelle Levy

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