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Jakub Juryšek - "Observation of the galactic PeVatron candidate LHAASO J2108+5157 with the Large-Sized telescope for the Cherenkov Telescope Array"
Zachary Curtis-Ginsberg - "Calibrating a Camera: Electronics work for the prototype Schwarzschild-Couder Telescope"
Agostina Filócomo - "In search of evidence of flares in T Tauri stars as gamma-ray emitters""
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| Abstract: The Cherenkov Telescope Array (CTA) Observatory will be the next generation ground-based very-high-energy gamma-ray observatory, sensitive from 20 GeV up to 300 TeV. The Large-Sized Telescope prototype (LST-1), currently in the commissioning phase, was inaugurated in October 2018 on La Palma (Spain). It is the first of four LST telescopes for CTA, to be built on La Palma. In 2021, LST-1 performed observations of one of the Galactic PeVatron candidates, LHAASO J2108+5157, recently discovered by the LHAASO collaboration. In my contribution, I present results of our analysis of the LST-1 data, putting strong constraints on the emission of the source in the multi-TeV band. I also present results of multi-wavelength modeling, testing different scenarios for the parent particles producing the high energy emission and put constraints on their spectra. |
Zachary Curtis-Ginsberg - "Calibrating a Camera: Electronics work for the prototype Schwarzschild-Couder Telescope"
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| Abstract: The dual-mirrored Schwarzschild-Couder Telescope is a proposed medium-sized telescope candidate for the Cherenkov Telescope Array’s southern site (in Paranal, Chile). The Schwarzschild-Couder design has an energy range of 100 GeV to 10 TeV and a field of view of 8°. A prototype Schwarzschild-Couder Telescope (pSCT) has been built next to VERITAS at the Fred Lawrence Whipple Observatory and was inaugurated in January 2019. The initial camera had 1,600 pixels instrumented (out of the full 11,328) spanning a 2.7° field of view. Based on observations in 2020, the partially instrumented camera detected gamma-ray emission from the Crab Nebula at a significance of 8.6σ. The pSCT camera is undergoing an upgrade, both to improve its performance and to instrument the full 11,328 pixel camera. I will present the process and status of the camera upgrade. |
Agostina Filócomo - "In search of evidence of flares in T Tauri stars as gamma-ray emitters"
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| Abstract: NGC 2071 is a star-forming region positionally correlated with three unidentified gamma-ray sources detected by the Fermi satellite telescope. According to a preliminary model, T Tauri stars could produce gamma-ray emission under specific conditions. We performed a spectral and temporal analysis of the Fermi data to determine whether the detected emission was caused by flares occurring in T Tauri stars. We found that the gamma-ray source can only be detected in the first two years of observations at energies above 100 GeV. In addition, a variability analysis reveals that the expected frequency of events is compatible with flare activity with a minimum X-ray energy of 5 × 1037 erg. These observational results impose, for the first time, a substantial constraint on the energetic of flares in T Tauri stars that could explain the origin of unknown gamma-ray sources in star-forming regions. |
Tuesday, June 4 Part 1
Ariel Perera - "Searching for Undetected Gamma Ray Bursts in Fermi GBM Data"
Pádraig Mc Dermott - "Gamma ray detection with EIRSAT-1: Ireland’s first satellite!"
Marianna Dafčíková - "The First GRBAlpha and VZLUSAT-2 catalogue: gamma-ray transients and detector sensitivity"
Manuele Maistrello - "The dispersion of the 𝐸𝑝,𝑖− 𝐿𝑖𝑠𝑜 correlation of long gamma-ray bursts is partially due to assembling different sources"
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