Accès ouvert déclaré
2024
preprint
Four years of wide-field search for nanosecond optical transients with the TAIGA-HiSCORE Cherenkov array
Alexander D Panov, И. И. Астапов, G. Beskin, P. A. Bezyazykov, А. В. Блинов, Е. А. Бонвеч, Artur N. Borodin, N. M. Budnev, А. В. Булан, P. Busygina D. V. Chernov, A. Chiavassa, Aleksei Nikolaevich Dyachok, А. Р. Гафаров, A. Yu. Garmash, V. Grebenyuk, E. O. Gress, Oleg A Gress, Т. И. Гресс, A. A. Grinyuk, O. G. Grishin, Ivanova La, A. D. Ivanova, Mikhail Alekseevich Ilyushin, Nikolai N Kalmykov, В. В. Киндин, S. N. Kiryuhin, Р. П. Кокоулин, К. Г. Компаниец, Elena E Korosteleva, В. А. Кожин, Е. А. Кравченко, L. A. Kuzmichev, Alexander P. Kryukov, Anatolii A. Lagutin, M. V. Lavrova, Yu. E. Lemeshev, Bayarto K. Lubsandorzhiev, Nima Lubsandorzhiev, Arslan Lukanov, С. Д. Малахов, Р. Р. Миргазов, Р. Д. Монхоев, E. A. Okyneva, Э. А. Осипова, А. Л. Пахоруков, А. Пан, Leonid Pankov, Anatoly A. Petrukhin, Д. А. Подгрудков, I. Poddubny, Е. Г. Попова, Evgeny Postnikov, В. В. Просин, А. А. Пушнин, Roman I. Raikin, A. Yu. Razumov, Evgenii V Rjabov, Grigory I Rubtsov, В. С. Самолига, A. Shaikovsky, Andrey Sidorenkov, А. А. Силаев, А. В. Скурихин, Ilyas Satyshev, Andrey Sokolov, Л. Г. Свешникова, В. А. Таболенко, A. B. Tanaev, M. Ternovoy, Leonid Tkachev, Nikita Ushakov, П. А. Волчугов, Н. В. Волков, Dmitriy Voronin, I. I. Yashin, Aleksey Zagorodnikov, D. P. Zhurov, V. N. Zirakashvili
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Le résumé fourni par la source
It has been previously demonstrated [Panov et al. Physics of Atomic Nuclei 84(2021)1037] that the TAIGA-HiSCORE Cherenkov array, originally built for cosmic ray physics and ultrahigh-energy gamma-ray astronomy studies using the extensive air shower method, can be used in conventional optical astronomy for wide-field searches for rare nanosecond optical transients of astrophysical origin. The FOV of the facility is on the scale of 1~ster, and it is capable of detecting very rare transients in the visible light range with fluxes greater than approximately 3000~quanta/m$^2$/10~ns (10~ns is the apparatus integration time) and pulse durations of 10\,ns. Among the potential sources of distant nanosecond optical transients are the evaporation of primary black holes, magnetic reconnection in the accretion disks of black holes, and signals from distant lasers of extraterrestrial civilizations. The paper describes the methods and results of the search for optical transients using the TAIGA-HiSCORE Cherenkov array from 2018 to 2022 (four winter seasons of data collection). No reliable astrophysical candidates for optical transients were found. We set an upper bound on the flux of the searched events as $\sim 1\times10^{-3}$\,events/ster/h.
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