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Colin Carlile, researcher at Lund Observatory. Photo.

Colin Carlile

Guest researcher

Colin Carlile, researcher at Lund Observatory. Photo.

Pybkgmodel - a background modelling toolbox for the CTA

Author

  • M. Strzys
  • C. Carlile
  • D. Dravins
  • I. Vovk

Summary, in English

Despite the advancement in background rejection techniques, observation of the very-high-energy gamma-ray sky by imaging atmospheric Cherenkov telescopes (IACTs) are subject to an irreducible background from gamma-like hadron- or electron-induced air showers. The determination of this residual background is crucial for accurate spectral and spatial measurements. The Cherenkov Telescope Array (CTA) will become the next generation of IACTs. To unveil its full potential, the improved reconstruction performance of CTA needs to be coupled with a reliable background estimate across the entire field of view. This may become especially important in the case of the planned surveys of large areas of the sky. In this contribution we will present pybkgmodel, an open-source python software package developed for CTA. It aims at providing in a consistent way the various background modelling methods, based on the experience from current IACTs such as H.E.S.S, MAGIC, and VERITAS. It is designed as a toolbox allowing a user to easily choose the optimal reconstruction approach for various target regions or a combination of several algorithms. We will introduce the design of the package as well as demonstrate its functionality using data for the CTA Large-Sized Telescope prototype (LST-1). © Copyright owned by the author(s) under the terms of the Creative Commons.

Department/s

  • Astrophysics

Publishing year

2024

Language

English

Publication/Series

Proceedings of Science

Volume

444

Document type

Conference paper

Publisher

Sissa Medialab srl

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • Cerenkov counters
  • Cosmic ray detectors
  • Cosmic ray measurement
  • Hadrons
  • Space telescopes
  • Air showers
  • Background modelling
  • Background rejection
  • Cherenkov telescope arrays
  • High energy gamma rays
  • Imaging atmospheric Cherenkov telescopes
  • Rejection techniques
  • Spatial measurements
  • Spectral measurement
  • Very high energies
  • Cosmology

Conference name

38th International Cosmic Ray Conference, ICRC 2023

Conference date

2023-07-26 - 2023-08-03

Conference place

Nagoya, Japan

Status

Published

ISBN/ISSN/Other

  • ISSN: 1824-8039