The EUSO-SPB2 Cherenkov Telescope - performance and preliminary results

Gazda, Eliza

doi:10.22323/1.444.1029

Cited by 4 publications

(7 citation statements)

References 11 publications

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“…The signal of the MUSIC-chips is digitized on a 10 ns cadence. More information on the camera can be found in [7].…”

Section: The Detectormentioning

confidence: 99%

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Overview of the EUSO-SPB2 Target of Opportunity program using the Cherenkov Telescope

Heibges¹

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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During the Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) mission, we planned Target of Opportunity (ToO) operations to follow up on possible sources of ≳ 10 PeV neutrinos. The original plan before flight was to point the onboard Cherenkov Telescope (CT) to catch the source's path on the sky just below Earth's horizon. By using the Earth as a tau-neutrino to tau-lepton converter, the CT would then be able to look for optical extensive air shower signals induced by tau-lepton decays in the atmosphere. The CT had a field of view of 6.4 • vertical × 12.8 • horizontal. Possible neutrino source candidates include gamma ray bursts, tidal disruption events and other bursting or flaring sources. In addition, follow-ups of binary neutron star mergers would have been possible after the start of the O4 observation run from LIGO-Virgo-KAGRA. The resulting exposure is modeled using the NuSpaceSim framework in ToO mode. With the launch of the EUSO-SPB2 payload on the 13th May 2023, this summarizes the ToO program status and preliminary data, as available.

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“…The signal of the MUSIC-chips is digitized on a 10 ns cadence. More information on the camera can be found in [7].…”

Section: The Detectormentioning

confidence: 99%

“…Electrical noise -There are also different types of background electronic sources, such as accidental triggers and cross talk. For more information on these background sources, see [7].…”

Section: Overview Of the Euso-spb2 Target Of Opportunity Programmentioning

confidence: 99%

Overview of the EUSO-SPB2 Target of Opportunity program using the Cherenkov Telescope

Heibges¹

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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“…This demonstrates its potential for future space missions such as POEMMA. A detailed discussion of the instrument's flight performance and a preliminary summary of the data collection are given in [19]. We manually scanned some of the more than 31,000 events triggered by the bifocal trigger to identify their possible origins.…”

Section: Pos(icrc2023)397 Euso-spb2 Overviewmentioning

confidence: 99%

Overview and First Results of EUSO-SPB2

Eser,

Olinto,

Wiencke

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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Observing ultra-high energy cosmic rays (UHECR) and very high energy (VHE) neutrinos from space is a promising way to measure their extremely low fluxes by significantly increasing the observed volume. The Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2), the next, most advanced pathfinder for such a mission, was launched May 13th 2023 from Wanaka New Zealand. The pioneering EUSO-SPB2 payload flew a Fluorescence Telescope (FT) with a PMT camera pointed in nadir to record fluorescence light from cosmic ray extensive air shower (EAS) with energies above 1 EeV, and a Cherenkov telescope (CT) with a silicon photomultiplier focal surface for observing Cherenkov emission of cosmic ray EAS with energies above 1 PeV with an above-the-limb geometry and of PeV-scale EAS initiated by neutrinosourced tau decay. As the CT is a novel instrument, optical background measurements for space neutrino observation are an important goal of the mission. Any data collected during the mission will influence and improve the development of a space-based multi-messenger observatory such as the Probe of Extreme Multi-Messenger Astrophysics (POEMMA). We present an overview of the EUSO-SPB2 mission and its science goals and summarize results as available, from the 2023 flight.

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“…The field of view (FOV) of the CT extends Δ𝛼 = 6.4 • in altitude and Δ𝜙 = 12.8 • in azimuth. Additional details describing the EUSO-SPB2 CT can be found in these proceedings [5,6]. To fulfil criteria 1 and 2, the pointing of the CT is such that the upper part of the field of view corresponds to the limb of Earth.…”

Section: Introductionmentioning

confidence: 99%

Neutrino Target-of-Opportunity Sky Coverage and Scheduler for EUSO-SPB2

Posligua,

Heibges,

Wistrand

et al. 2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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Very-high-energy neutrinos can be observed by detecting air shower signals. Detection of transient target of opportunity (ToO) neutrino sources is part of a broader multimessenger program. The Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) Mission, launched on May 12, 2023, was equipped with an optical Cherenkov Telescope (CT) designed to detect up-going air showers sourced by Earth-skimming neutrinos that interact near the Earth's limb. Presented here is an overview of the sky coverage and ToO scheduler software for EUSO-SPB2. By using the balloon trajectory coordinates and setting constraints on the positions of the Sun and Moon to ensure dark skies, we can determine if and when a source direction is slightly below the Earth's limb. From a source catalog, CT scheduling and pointing is performed to optimize the search for high energy neutrinos coming from astrophysical sources. Some sample results for EUSO-SPB2 are shown.

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The EUSO-SPB2 Cherenkov Telescope - performance and preliminary results

Cited by 4 publications

References 11 publications

Overview of the EUSO-SPB2 Target of Opportunity program using the Cherenkov Telescope

Overview of the EUSO-SPB2 Target of Opportunity program using the Cherenkov Telescope

Overview and First Results of EUSO-SPB2

Neutrino Target-of-Opportunity Sky Coverage and Scheduler for EUSO-SPB2

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