Speaker
Description
Blazars are among the most powerful objects in the Universe and are prime candidates for producing ultra-high-energy cosmic rays and astrophysical neutrinos. In today’s multi-messenger era, combining data from different cosmic messengers with advanced modeling tools is key to unlocking the secrets of these extreme sources.
In this contribution, we present a novel, user-friendly multi-messenger modeling approach built on the open-source package Gammapy. Our framework brings together observations from optical to very-high-energy gamma rays operating directly on instrumental counts. The possibility to then directly fit theoretical models to these data inside Gammapy enables us to minimize biases and assumptions.
Focusing on blazars as key multi-messenger targets, we showcase how our framework enhances the ability to constraint emission models and present its extension to (lepto-)hadronic models and neutrino data. Hadronic models are computationally expansive and therefore cannot be easily fit on the fly. We present our current solutions for hadronic fits and discuss possible future implementations.
