Warning: following the coronavirus emergency, all the talks will be given remotely online. The link to connect to the seminar will be available in due time.
Energy dependent morphology of the pulsar wind nebula HESS J1825-137 in the GeV domain
Giacomo Principe (INAF-IRA)
Tuesday 07/04/2020 @ 14:00, Google Hangouts Meet
In the talk I will review the importance of pulsar wind nebulae (PWN) as Galactic particle accelerators up to the knee (Pevatron candidates) focusing on the PWN HESS J1825-137, which is is the biggest PWN seen in gamma-rays and it is one of the four sources detected by HAWC above 100 TeV. HESS J1825-137 is the archetypal example of energy-dependent morphology within PWN. In a deep analysis with more than ten years of Fermi-LAT data, we measure continued energy dependence into the GeV regime. Combining GeV and TeV data yields new insights into the evolutionary history of the system. We use a multi-zone model to reproduce simultaneously the spectral and morphological properties of the nebula aiming at investigating the particle transport inside the source.
Link to the recorded talk: youtu.be/imNhCI-yLAs