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ASTROVIBE - Astrophysical Studies of Time delays fROm Violation of Lorentz Invariance and Blazar Emission

→ Europe/Paris
LPNHE

LPNHE
Description

In recent years, research aimed at constraining a violation of Lorentz invariance, in search of potential effects of quantum gravity, has led to precise studies of the rapid variability of astrophysical sources (AGN, GRB) in function of their energy using data from Cherenkov observatories. These endeavors to produce constraints on the violation of Lorentz invariance are based on the assumption that no intrinsic delay at the source is expected.

The purpose of this workshop, by pooling knowledge from different communities (AGN, GRB, LIV), is to provide avenues for reflection on the following questions:

What are the predictions of AGN and GRB emission models regarding energy-dependent time delays? 

Can these predictions be tested using the same methods as LIV on current and future data? 

Is such a constraint on energy-dependent time delays useful for understanding the mechanisms at work within AGN and GRB? 

According to AGN and GRB models, what are the ways to distinguish between quantum gravity and astrophysical effects?

These avenues of reflection will enable the production of a budget request to the ANR to exploit the insights and potential answers that will emerge from this workshop.

 

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  • mar. 16 juillet
    • 09:00 → 10:30
      General Introduction and ANR project discussion
      • Welcome and presentation of the goal of the workshop
      • Give to the audience the targeted ANR project
      • Rules of the ANR project
      • Deadlines and discussion on the organization
      Présidents de session: HELENE SOL (LUTH), Julien BOLMONT (LPNHE - Paris), Dr Sami Caroff (LAPP)
    • 10:30 → 11:00
      Coffee break
    • 11:00 → 12:30
      Current search for LIV in Cherenkov data
      • Explain the current status of LIV search in various Cherenkov data
      • Give a presentation of the software LIVelihood and the method used for LIV analysis
      Présidents de session: Cyann Plard (LAPP), Daniel Kerszberg (LPNHE, CNRS/IN2P3), Dr Sami Caroff (LAPP), Ugo Pensec
    • 12:30 → 14:00
      lunch
    • 14:00 → 15:30
      Disentangling LIV from source intrinsic effect ?
      • Challenges coming from source intrinsic effect
      • Current idea and analysis performed to disentable LIV from source intrinsic effect
      Présidents de session: Julien BOLMONT (LPNHE - Paris), Dr Sami Caroff (LAPP)
    • 15:30 → 16:00
      Coffee break
    • 16:00 → 17:30
      AGN fast variability modelling
      • modeling of AGN variability
      • Current models and codes available
      • Intrinsic time delay expected for AGN variability modelling
      Présidents de session: HELENE SOL (LUTH), Julien BOLMONT (LPNHE - Paris)
  • mer. 17 juillet
    • 09:00 → 10:30
      AGN variability in the CTAO era
      • Give a feedback to the audience about the AGN program of CTAO
      • AGN short time scale variability in the CTAO era
      • possible issue for LIV (expected spectral variability ?)
      Présidents de session: Alberto Rosales De Leon (Observatoire de Paris), Guillaume Grolleron, Jean-Philippe Lenain (LPNHE, CNRS/IN2P3)
    • 10:30 → 11:00
      Coffee break
    • 11:00 → 12:30
      Gamma ray Burst modelisation and perspective in the SVOM era
      • GRB modelisation
      • intrinsic Time lag versus energy expected in modelisation ?
      • Perspective in the SVOM era
      Président de session: Prof. Frédéric DAIGNE (Institut d'Astrophysique de Paris - Sorbonne Université)
      • 11:00
        Gamma ray Burst modelisation and perspective in the SVOM era 20m
        Orateur: Prof. Frédéric DAIGNE (Institut d'Astrophysique de Paris - Sorbonne Université)
        20240717-AstroVibe-Daigne.pdf
    • 12:30 → 14:00
      lunch
    • 14:00 → 15:30
      Building the synergies between the AGN-GRB-LIV communities
      • Study of AGN and GRB variability with LIV codes
      • Going further for intrinsic effect modelization
      • Study in the CTAO era, push for synergies between communities
      • beyond AGN-GRB-LIV communities to reach?
      Présidents de session: Prof. Frédéric DAIGNE (Institut d'Astrophysique de Paris - Sorbonne Université), HELENE SOL (LUTH), Julien BOLMONT (LPNHE - Paris), Dr Sami Caroff (LAPP)
    • 15:30 → 16:00
      Coffee break
    • 16:00 → 17:30
      ANR brainstorming and next steps
      Présidents de session: Julien BOLMONT (LPNHE - Paris), Dr Sami Caroff (LAPP)
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