CTA

Introduction | Getting started | Resources

Introduction

The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for gamma-ray astronomy at very-high energies. Gammapy has been chosen in June 1^st, 2021 to be the official Science Analysis Tool library for the CTA Observatory (see CTAO news).

This page provides a little bit of information and links to useful resources concerning simulation and analysis of CTA data with Gammapy. Most of the pages we link to here require a CTA user account to access the information.

Getting started

To learn how to use Gammapy for CTA analysis, use the Gammapy tutorials. We suggest you do the "Getting started with Gammapy" one first, and then continue with "CTA first data challenge (1DC) with Gammapy" and "CTA data analysis with Gammapy" and finally the "CTA 2D source fitting with Sherpa".

If you have questions, please post on the Gammapy CTA mailing list or contact the Gammapy coordination committee (see Gammapy contact page)

Please note that Gammapy is a very young project and is under heavy development. At the moment we are participating in the CTA first data challenge, fixing issues and adding new functionality for CTA.

Resources

• CTA first data challenge (CTA DC-1) page This page contains information about data, sky models, links to forums for discussion and checks, ... (private access with the old access system)
• cta-analyses - a private repository on Github that we use to share analysis scripts and notebooks that use CTA-internal data and IRFs. The main purpose is to make it easy to collaborate on issues and code. Eventually results should be shared on the official CTA pages of course! To get access, send an email to Bruno Khélifi or anyone else that you know that is involved in Gammapy and CTA.
• If you're doing simulations or analysis for CTA with Gammapy and would like to discuss your results or get help, please join the Gammapy mailing list, the regular Gammapy calls.