Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data

Abstract

Aims. LST-1, the prototype of the Large-Sized Telescope for the upcoming Cherenkov Telescope Array Observatory, is concluding its commissioning in Observatorio del Roque de los Muchachos on the island of La Palma. The proximity of LST-1 (Large-Sized Telescope 1) to the two MAGIC (Major Atmospheric Gamma Imaging Cherenkov) telescopes permits observations of the same gamma-ray events with both systems. Methods. We describe the joint LST-1+MAGIC analysis pipeline and use simultaneous Crab Nebula observations and Monte Carlo simulations to assess the performance of the three-telescope system. The addition of the LST-1 telescope allows the recovery of events in which one of the MAGIC images is too dim to survive analysis quality cuts. Results. Thanks to the resulting increase in the collection area and stronger background rejection, we find a significant improvement in sensitivity, allowing the detection of 30% weaker fluxes in the energy range between 200 GeV and 3 TeV. The spectrum of the Crab Nebula, reconstructed in the energy range ~60 GeV to ~10 TeV, is in agreement with previous measurements.

Accepted for publication in Astronomy & Astrophysics

References in corpus (19)

• Observations of the Crab Nebula with H.E.S.S
• The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula
• The major upgrade of the MAGIC telescopes, Part I: The hardware improvements and the commissioning of the system
• Simulation of Imaging Atmospheric Cherenkov Telescopes with CORSIKA and sim_telarray
• Performance of the MAGIC stereo system obtained with Crab Nebula data
• The Crab Nebula as a standard candle in very high-energy astrophysics
• Measurement of the Crab Nebula spectrum over three decades in energy with the MAGIC telescopes
• Performance of the MAGIC telescopes under moonlight
• Comparison of techniques to reconstruct VHE gamma-ray showers from multiple stereoscopic Cherenkov images
• A New Analysis Method for Reconstructing the Arrival Direction of TeV Gamma-rays Using a Single Imaging Atmospheric Cherenkov Telescope
• Towards open and reproducible multi-instrument analysis in gamma-ray astronomy
• Search for an extended VHE gamma-ray emission from Mrk 421 and Mrk 501 with the MAGIC Telescope
• Observations of the Crab Nebula and Pulsar with the Large-Sized Telescope Prototype of the Cherenkov Telescope Array
• Analysis techniques and performance of the Domino Ring Sampler version 4 based readout for the MAGIC telescopes
• Using Muon Rings for the Calibration of the Cherenkov Telescope Array: A Systematic Review of the Method and its Potential Accuracy
• Nature of the low-energy, γ-like background for the Cherenkov Telescope Array
• Effect of the uncertainty in the hadronic interaction models on the estimation of the sensitivity of the Cherenkov Telescope Array
• Intercalibration of Cherenkov Telescopes in Telescope Arrays
• A study on Performance Boost of a 17~m class Cherenkov telescope with a SiPM-based camera

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