2–4 Mar 2026
Harokopio University
Europe/Athens timezone

Accelerating multi-messenger modeling of blazars with neural networks

Not scheduled
25m
Harokopio University

Harokopio University

Thiseos 70, Kallithea 176 76

Speaker

Federico Testagrossa (DESY (Zeuthen))

Description

Modeling the spectral energy distributions (SEDs) of blazars with physically motivated models is computationally expensive, as it requires solving coupled differential equations numerically and scanning high-dimensional parameter spaces.
In this contribution I will present our recent application of machine learning to accelerate the evaluations of blazar SED. Our method relies on a neural network (NN) architecture based on Gated Recurrent Units (GRUs), trained on a large sample of lepto-hadronic blazar simulations computed with the publicly available codes $AM^3$ and $LeHaMoC$. The resulting NN offers a strongly reduced run time while maintaining high accuracy in SED prediction. This efficiency enables Bayesian inference to be performed efficiently, making the method suitable for real-time analysis of blazar data.

Primary author

Federico Testagrossa (DESY (Zeuthen))

Co-authors

Chengchao Yuan (University of Brussels) Despina Karavola (National and Kapodistrian University of Athens) Georgios Vasilopoulos (National and Kapodistrian University of Athens) Maria Petropoulou Stamatios Ilias Stathopoulos (DESY) Walter Winter (DESY)

Presentation materials

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