The Baikal-GVD neutrino telescope as an instrument for studying Baikal water luminescence
V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov,, R. Bannasch, Z. Barda\v{c}ov\'a, I. A. Belolaptikov, I. V. Borina, V. B., Brudanin, N. M. Budnev, V. Y. Dik, G. V. Domogatsky, A. A. Doroshenko, R., Dvornick\'y, A. N. Dyachok, Zh.-A. M. Dzhilkibaev
TL;DR
This paper reports on the Baikal-GVD neutrino telescope's observations of Baikal water luminescence, including annual activity increases and a unique propagating luminescent layer, providing insights into ambient light variations in the lake.
Contribution
It introduces the use of the Baikal-GVD neutrino telescope for detailed study of water luminescence and documents novel phenomena observed in Baikal Lake.
Findings
Annual increase in luminescence activity from 2018 to 2020
First observation of a propagating highly luminescent layer at 28 m/day
Detection of spatial and temporal variations in ambient light
Abstract
We present data on the Baikal water luminescence collected with the Baikal-GVD neutrino telescope. This three-dimensional array of photo-sensors allows the observation of time and spatial variations of the ambient light field. We report on annual increase of luminescence activity in years 2018-2020. We observed a unique event of a highly luminescent layer propagating upwards with a maximum speed of 28 m/day for the first time.
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