Cherenkov Astronomy Data School, Paris, 2024

Table of contents

1. Overview
2. Introduction to high-energy astrophysics
3. Introduction to TeV gamma-ray detection
4. Introduction to TeV data analysis
5. Gammapy hands-on sessions
6. User session
7. Legal notice

1. Overview

One-week school on gamma-ray astronomy organized at the Observatoire de Paris, designed for PhD students/postdocs/researchers eager to learn about gamma-ray astronomy data and the specific challenges of ground-based Cherenkov observations and of high-energy data analysis. The science analysis tool Gammapy, chosen by/for the international Cherenkov Telescope Array Observatory CTAO, will be presented. Lectures and hands-on sessions (beginners and experienced users) will take place on two sites of the Observatoire de Paris, in Paris and Meudon.

The indico page is https://indico.obspm.fr/event/2480/overview.

2. Introduction to high-energy astrophysics

Radiative processes

Made by S. Gabici (APC, Paris) - Monday 14th, 14h/15h30, Salle Denisse at the Observatoire de Paris

Link to the presentation

Galactic sources (TBC)

Made by S. Gabici (APC, Paris) - Monday 14th, 16h/17h30, Salle Denisse at the Observatoire de Paris

Link to the presentation

Extragalactic sources (TBC)

Made by M. Cerruti (APC, Paris) - Tuesday 14th, 9h30/11h00, Salle du Conseil at the Observatoire de Paris [Link to the presentation]

3. Detection and reconstruction of extensive air showers

Made by Federica Bradascio (IJCLab, Orsay) - Tuesday 14th, 11h15/12h45, Salle du Conseil at the Observatoire de Paris

Link to the presentation

4. Introduction to TeV data analysis

From detection to high-level reconstruction - A statistical view on gamma-ray sources - 1

Made by Jonathan Biteau (IJCLab, Orsay) - Tuesday 14th, 14h00/15h30h, Salle Denisse at the Observatoire de Paris

From detection to high-level reconstruction - A statistical view on gamma-ray sources - 2

Made by Jonathan Biteau (IJCLab, Orsay) - Tuesday 14th, 15h55/17h25h, Salle Danjon at the Observatoire de Paris

NPAC Master course

Link to the presentation

5. Gammapy hands-on sessions

Location: Salle CIAS, Meudon

The hands-on session will be organised for two different groups:

• the beginner users : material page
• the advanced users : material page

6. User session

Location: Salle Danjon at the Observatoire de Paris

Questions and discussion on specific projects:

• Stellar arachnology at the highest energies: Identifying potential targets to CTAO, by Livia Silva Rocha

Spider pulsars are binary systems where a low-mass companion orbits a millisecond pulsar in a short-period orbit (less than one day). These systems are categorized as black widows (m_c << 0.1 M_\odot) or redbacks (m_c ~ 0.1 - 0.5 M_\odot), depending on the companion’s mass. The presence of long eclipses in these systems indicates intrabinary material, along with an intrabinary shock, which offers a promising environment for particle acceleration and gamma-ray emission at TeV energies. This work employs the Gammapy package to analyze available data on spider systems, primarily from Fermi-LAT, and plan to integrate a radiative model developed with the UMBRELA code to extract the spectral model of each binary. Simulated observations of the full sample of spider systems using the CTAO under its Alpha Configuration, based on the computed spectral models, will then help identify the most promising sources for detection with the next generation of Imaging Atmospheric Cherenkov Telescopes (IACTs). This presentation will cover preliminary results, its challenges, and the next steps in the analysis.

Presentation

7. Legal notice

All contributors of these pages has agreed with the term of the BSD-3-Clause license of this repository.

In addition, all material will be archived into the universal Software Heritage archive. The SWHID identification number is swh:1:dir:1765812ea4eb1772b6e7d3cfd8ba614e41c05f34.