SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 88: Gamma Astronomy IV

T 88.4: Talk

Wednesday, March 22, 2023, 18:15–18:30, POT/0151

3D Shower Reconstruction with the Cherenkov Telescope Array^* — •Stefan Fröse and Lukas Nickel for the CTA collaboration — TU Dortmund University, Dortmund, Germany

The Cherenkov Telescope Array (CTA) is the next-generation telescope array for high-energy gamma-ray astronomy. The Imaging Atmospheric Cherenkov Telescopes (IACTs) will be able to make precise measurements of the Cherenkov light induced by incident primary particles, such as photons or ions. To determine the direction and energy of these particles, the characteristics of the atmospheric shower have to be reconstructed.

One possible method is the reconstruction using a three-dimensional rotationally invariant Gaussian shower model, as introduced by the H.E.S.S. collaboration. This model is fitted directly to the images of the shower in the triggered cameras using a maximum likelihood approach. This talk will summarize the current implementation as part of the ctapipe analysis package and the initial results.

^* Supported by DFG (SFB 1491)