S. O. Koligaev

Design and Implementation of the Fast Data Processing System for the Baikal-GVD Neutrino Telescope

V. A. Allakhverdyan, A. D. Avrorin, А. В. Аврорин, V. M. Aynutdinov et autres

We present a fast data processing system for the Baikal-GVD neutrino telescope, designed for rapid identification of astrophysical neutrino events. Leveraging Baikal-GVD's modular cluster architecture, the system implements parallelized file processing where raw data files undergo concurrent analysis across dedicated virtual machines. …

Diffuse neutrino flux measurements with the Baikal-GVD neutrino telescope

Rastislav Dvornický, V. A. Allakhverdyan, А. D. Avrorin, A. V. Avrorin et autres

We present measurement of the diffuse astrophysical neutrino flux using Baikal-GVD cascade data collected between April 2018 to March 2024. The diffuse astrophysical neutrino flux is detected with a statistical significance of 5.1 sigma. Assuming a single power law model of the …

Instruments and Techniques for Long-term Monitoring of Optical Properties of Deep Waters of Lake Baikal

A. D. Avrorin, А. В. Аврорин, V. M. Aynutdinov, V. A. Allakhverdyan et autres

Abstract The development of the deep underwater neutrino telescope BAIKAL-GVD involves the creation of equipment for regular long-term monitoring of inherent optical properties (IOP) of the aquatic environment within the effective volume of the telescope. Regular monitoring of IOP provides not only …

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Measurement of the diffuse astrophysical neutrino flux over six seasons using cascade events from the Baikal-GVD expanding telescope

GVD Collaboration, V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin et autres

We present an updated measurement of the diffuse astrophysical neutrino flux using Baikal-GVD cascade data collected between April 2018 to March 2024. In this period, the detector grew from 15% to 55% of its baseline cubic kilometer configuration. The diffuse astrophysical neutrino …

Application of an Inertial Positioning System for Estimation of Coordinates and Orientation of Optical Modules of the Baikal-GVD Deep Underwater Neutrino Telescope

V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov et autres

Abstract The new generation neutrino telescope Baikal-GVD is under deployment in Lake Baikal. The telescope registers Cherenkov radiation resulting from the interaction of neutrinos with the water environment of the lake, using the spatial structure of optical modules – photodetectors. To determine …

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Real-time follow-up of multimessenger alerts at the Baikal-GVD telescope

V.A. Allakhverdyan, A D Avrorin, A V Avrorin, V.M Aynutdinov et autres

Abstract The Baikal-GVD neutrino telescope, located in Lake Baikal, Russia, is designed to detect high-energy neutrinos and perform real-time searches for astrophysical sources associated with multimessenger signals, such as gamma-ray bursts, gravitational waves, and neutrino alerts. Since 2021, the implementation of an …

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Probing the Galactic Neutrino Flux at Neutrino Energies above 200 TeV with the Baikal Gigaton Volume Detector

V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov et autres

Abstract Recent observations of the Galactic component of the high-energy neutrino flux, together with the detection of the diffuse Galactic gamma-ray emission up to sub-PeV energies, open new possibilities to study the acceleration and propagation of cosmic rays in the Milky Way. …

Overview of the Baikal-GVD neutrino telescope: 2024 status

V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov et autres

A review of the Baikal-GVD neutrino telescope status after the winter 2024 deployment campaign that results in 4 104 opticalmodules installed on 114 vertical strings is presented. The results of analysis of Baikal-GVD data collected in 2018-2023 show the presence of cosmic …

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Recent Results From the Baikal-GVD Neutrino Telescope

V. A. Allakhverdyan, A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov et autres

Neutrino is considered as a superior astronomical messenger thanks to not being deflected or absorbed by interstellar medium. Detection of neutrinos from distant high-energy cosmic accelerators has been a long-standing problem emerged in the last quarter of 20th century. Only in 2013 …

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Laser-Calibration System of the Baiklal-GVD Neutrino Telescope

A. D. Avrorin, A. V. Avrorin, V. M. Aynutdinov, V. A. Allakhverdyan et autres

Abstract The Baikal-GVD deep-sea Cherenkov detector, whose deployment in Lake Baikal has been ongoing since 2016, currently represents the largest neutrino telescope in the Northern Hemisphere. The principle of the telescope’s operation is based on the registration of Cherenkov radiation produced by …

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Reconstruction of double cascades in the Baikal-GVD neutrino telescope

E. Eckerová, V. M. Aynutdinov, V. A. Allakhverdyan, А. В. Аврорин et autres

Baikal Gigaton Volume Detector is a cubic kilometer scale water Cherenkov neutrino telescope aimed at registration of astrophysical neutrinos. Detection of the double cascade signature events is of particular interest. A description of the double cascade reconstruction technique is presented. The evaluation …

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Selection techniques of neutrino-induced cascades in the Baikal-GVD neutrino telescope

Zuzana Bardačová, V. M. Aynutdinov, V. A. Allakhverdyan, А. В. Аврорин et autres

One of the light signatures in the Baikal-GVD neutrino telescope consists of hadronic and elec- tromagnetic cascades produced by charged interactions of electron and tau neutrinos. In the case of neutral current interactions, all flavors yield cascades. The background in the neutrino …

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