Baikal-GVD Real-Time Data Processing and Follow-Up Analysis of GCN   Notices

V.M. Aynutdinov; V.A. Allakhverdyan; A.D. Avrorin; A.V. Avrorin; Z.; Barda\v{c}ov\'a; I.A. Belolaptikov; E.A. Bondarev; I.V. Borina; N.M. Budnev,; V.A. Chadymov; A.S. Chepurnov; V.Y. Dik; G.V. Domogatsky; A.A. Doroshenko; R.; Dvornick\'y; A.N. Dyachok; Zh.-A.M. Dzhilkibaev; E. Eckerov\'a; T.V. Elzhov,; L. Fajt; V.N. Fomin; A.R. Gafarov; K.V.Golubkov; N.S. Gorshkov; T. I. Gress,; K.G. Kebkal; I.V. Kharuk; E.V. Khramov; M.M. Kolbin; S.O. Koligaev; K.V.; Konischev; A.V. Korobchenko; A.P. Koshechkin; V.A. Kozhin; M.V. Kruglov; V.F.; Kulepov; Y.E. Lemeshev; M.B. Milenin; R.R. Mirgazov; D.V. Naumov; A.S.; Nikolaev; D.P. Petukhov; E.N. Pliskovsky; M.I. Rozanov; E.V. Ryabov; G.B.; Safronov; D. Seitova; B.A. Shaybonov; M.D. Shelepov; S.D. Shilkin; E.V.; Shirokov; F. \v{S}imkovic; A.E. Sirenko; A.V. Skurikhin; A.G. Solovjev; M.N.; Sorokovikov; I. \v{S}tekl; A.P. Stromakov; O.V. Suvorova; V.A. Tabolenko,; B.B. Ulzutuev; Y.V. Yablokova; D.N. Zaborov; S.I. Zavyalov; D.Y. Zvezdov

arXiv:2308.13829·astro-ph.HE·August 29, 2023

Baikal-GVD Real-Time Data Processing and Follow-Up Analysis of GCN Notices

V.M. Aynutdinov, V.A. Allakhverdyan, A.D. Avrorin, A.V. Avrorin, Z., Barda\v{c}ov\'a, I.A. Belolaptikov, E.A. Bondarev, I.V. Borina, N.M. Budnev,, V.A. Chadymov, A.S. Chepurnov, V.Y. Dik, G.V. Domogatsky, A.A. Doroshenko, R., Dvornick\'y, A.N. Dyachok, Zh.-A.M. Dzhilkibaev

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TL;DR

This paper describes the Baikal-GVD real-time neutrino alert system launched in 2021, capable of rapid response to external alerts, and presents a follow-up analysis of a potential neutrino-blazar association.

Contribution

It introduces the Baikal-GVD real-time data processing system and reports on its first follow-up analysis of a possible neutrino source association.

Findings

01

Detection of a 43 TeV cascade event coinciding with an IceCube alert.

02

Successful implementation of a rapid alert response within 3-10 minutes.

03

Potential association between Baikal-GVD event and blazar PKS 0735+178.

Abstract

The Baikal-GVD alert system was launched at the beginning of 2021. There are alerts for muon neutrinos (long upward-going track-like events) and all-flavour neutrinos (high-energy cascades). The system is able to get a preliminary response to external alerts with a temporal delay of about 3-10 minutes. The Baikal-GVD data processing and the results of the follow-up procedure are described. We report on the analysis of the coincidence in time and direction between the Baikal-GVD cascade GVD20211208CA with an estimated energy of 43 TeV and the announced alert IceCube211208A possibly associated with a flaring state of the blazar PKS 0735+178.

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