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First constraints on point-like astrophysical sources using Baikal-GVD muon neutrino events

Fuente: arXiv

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Bibliographic Details
Main Authors:	GVD Collaboration, Allakhverdyan, V. A., Avrorin, A. D., Avrorin, A. V., Aynutdinov, V. M., Belolaptikov, I. A., Beňušová, Z., Bondarev, E. A., Borina, I. V., Budnev, N. M., Chadymov, V. A., Chepurnov, A. S., Dik, V. Y., Dmitrieva, A. N., Domogatsky, G. V., Doroshenko, A. A., Dvornický, R., Dyachok, A. N., Dzhilkibaev, Zh. -A. M., Eckerová, E., Elzhov, T. V., Fomin, V. N., Gafarov, A. R., Golubkov, K. V., Gordeev, A. R., Gress, T. I., Kebkal, K. G., Kebkal, V. K., Kharuk, I. V., Khokhlov, S. S., Khramov, E. V., Kolbin, M. M., Koligaev, S. O., Konischev, K. V., Korobchenko, A. V., Koshechkin, A. P., Kozhin, V. A., Kruglov, M. V., Kulepov, V. F., Kulikov, A. A., Lemeshev, Y. E., Lisitsin, M. V., Lovtsov, S. V., Mirgazov, R. R., Morgunov, E. S., Naumov, D. V., Nikolaev, A. S., Perevalova, I. A., Petrukhin, A. A., Petukhov, D. P., Pliskovsky, E. N., Rozanov, M. I., Ryabov, E. V., Safronov, G. B., Shaybonov, B. A., Sheshukov, A. S., Shishkin, V. Y., Shirokov, E. V., Šimkovic, F., Sirenko, A. E., Skurikhin, A. V., Solovjev, A. G., Sorokovikov, M. N., Štekl, I., Stromakov, A. P., Suvorova, O. V., Tabolenko, V. A., Tretyak, V. I., Trubnikov, G. V., Ulzutuev, B. B., Wang, Z., Yablokova, Y. V., Zaborov, D. N., Zavyalov, S. I., Zvezdov, D. Y.
Format:	Preprint
Published:	2026
Subjects:	High Energy Astrophysical Phenomena
Online Access:	Acceder al recurso
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author	GVD Collaboration Allakhverdyan, V. A. Avrorin, A. D. Avrorin, A. V. Aynutdinov, V. M. Belolaptikov, I. A. Beňušová, Z. Bondarev, E. A. Borina, I. V. Budnev, N. M. Chadymov, V. A. Chepurnov, A. S. Dik, V. Y. Dmitrieva, A. N. Domogatsky, G. V. Doroshenko, A. A. Dvornický, R. Dyachok, A. N. Dzhilkibaev, Zh. -A. M. Eckerová, E. Elzhov, T. V. Fomin, V. N. Gafarov, A. R. Golubkov, K. V. Gordeev, A. R. Gress, T. I. Kebkal, K. G. Kebkal, V. K. Kharuk, I. V. Khokhlov, S. S. Khramov, E. V. Kolbin, M. M. Koligaev, S. O. Konischev, K. V. Korobchenko, A. V. Koshechkin, A. P. Kozhin, V. A. Kruglov, M. V. Kulepov, V. F. Kulikov, A. A. Lemeshev, Y. E. Lisitsin, M. V. Lovtsov, S. V. Mirgazov, R. R. Morgunov, E. S. Naumov, D. V. Nikolaev, A. S. Perevalova, I. A. Petrukhin, A. A. Petukhov, D. P. Pliskovsky, E. N. Rozanov, M. I. Ryabov, E. V. Safronov, G. B. Shaybonov, B. A. Sheshukov, A. S. Shishkin, V. Y. Shirokov, E. V. Šimkovic, F. Sirenko, A. E. Skurikhin, A. V. Solovjev, A. G. Sorokovikov, M. N. Štekl, I. Stromakov, A. P. Suvorova, O. V. Tabolenko, V. A. Tretyak, V. I. Trubnikov, G. V. Ulzutuev, B. B. Wang, Z. Yablokova, Y. V. Zaborov, D. N. Zavyalov, S. I. Zvezdov, D. Y.
author_facet	GVD Collaboration Allakhverdyan, V. A. Avrorin, A. D. Avrorin, A. V. Aynutdinov, V. M. Belolaptikov, I. A. Beňušová, Z. Bondarev, E. A. Borina, I. V. Budnev, N. M. Chadymov, V. A. Chepurnov, A. S. Dik, V. Y. Dmitrieva, A. N. Domogatsky, G. V. Doroshenko, A. A. Dvornický, R. Dyachok, A. N. Dzhilkibaev, Zh. -A. M. Eckerová, E. Elzhov, T. V. Fomin, V. N. Gafarov, A. R. Golubkov, K. V. Gordeev, A. R. Gress, T. I. Kebkal, K. G. Kebkal, V. K. Kharuk, I. V. Khokhlov, S. S. Khramov, E. V. Kolbin, M. M. Koligaev, S. O. Konischev, K. V. Korobchenko, A. V. Koshechkin, A. P. Kozhin, V. A. Kruglov, M. V. Kulepov, V. F. Kulikov, A. A. Lemeshev, Y. E. Lisitsin, M. V. Lovtsov, S. V. Mirgazov, R. R. Morgunov, E. S. Naumov, D. V. Nikolaev, A. S. Perevalova, I. A. Petrukhin, A. A. Petukhov, D. P. Pliskovsky, E. N. Rozanov, M. I. Ryabov, E. V. Safronov, G. B. Shaybonov, B. A. Sheshukov, A. S. Shishkin, V. Y. Shirokov, E. V. Šimkovic, F. Sirenko, A. E. Skurikhin, A. V. Solovjev, A. G. Sorokovikov, M. N. Štekl, I. Stromakov, A. P. Suvorova, O. V. Tabolenko, V. A. Tretyak, V. I. Trubnikov, G. V. Ulzutuev, B. B. Wang, Z. Yablokova, Y. V. Zaborov, D. N. Zavyalov, S. I. Zvezdov, D. Y.
contents	Baikal-GVD is a new-generation neutrino telescope under final construction stages in Lake Baikal, Russia. With an instrumented volume already at 0.7 km$^3$, Baikal-GVD is currently the largest neutrino telescope in the Northern hemisphere. A sub-degree angular resolution, made possible thanks to high purity of Baikal water, further enhances Baikal-GVD sensitivity to cosmic neutrino sources. In this work, we employ track-like events collected from the partially completed detector between April 2019 and March 2024 to search for muon neutrino fluxes from 92 astrophysical objects of interest. For this, a $χ^2$-based track reconstruction method is used along with a cut-based analysis. The analysis uses upward-going muons only, providing coverage for declinations between -90$^\circ$ and +38$^\circ$. No significant excess has been found, so upper limits are reported. The obtained limits are competitive with those set by ANTARES and KM3NeT. We briefly comment on a possible low-significance indication of an excess from the direction of Westerlund 1. This work sets a major milestone on the way to full-scale scientific exploitation of Baikal-GVD data.
format	Preprint
id	arxiv_https___arxiv_org_abs_2603_21261
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	First constraints on point-like astrophysical sources using Baikal-GVD muon neutrino events GVD Collaboration Allakhverdyan, V. A. Avrorin, A. D. Avrorin, A. V. Aynutdinov, V. M. Belolaptikov, I. A. Beňušová, Z. Bondarev, E. A. Borina, I. V. Budnev, N. M. Chadymov, V. A. Chepurnov, A. S. Dik, V. Y. Dmitrieva, A. N. Domogatsky, G. V. Doroshenko, A. A. Dvornický, R. Dyachok, A. N. Dzhilkibaev, Zh. -A. M. Eckerová, E. Elzhov, T. V. Fomin, V. N. Gafarov, A. R. Golubkov, K. V. Gordeev, A. R. Gress, T. I. Kebkal, K. G. Kebkal, V. K. Kharuk, I. V. Khokhlov, S. S. Khramov, E. V. Kolbin, M. M. Koligaev, S. O. Konischev, K. V. Korobchenko, A. V. Koshechkin, A. P. Kozhin, V. A. Kruglov, M. V. Kulepov, V. F. Kulikov, A. A. Lemeshev, Y. E. Lisitsin, M. V. Lovtsov, S. V. Mirgazov, R. R. Morgunov, E. S. Naumov, D. V. Nikolaev, A. S. Perevalova, I. A. Petrukhin, A. A. Petukhov, D. P. Pliskovsky, E. N. Rozanov, M. I. Ryabov, E. V. Safronov, G. B. Shaybonov, B. A. Sheshukov, A. S. Shishkin, V. Y. Shirokov, E. V. Šimkovic, F. Sirenko, A. E. Skurikhin, A. V. Solovjev, A. G. Sorokovikov, M. N. Štekl, I. Stromakov, A. P. Suvorova, O. V. Tabolenko, V. A. Tretyak, V. I. Trubnikov, G. V. Ulzutuev, B. B. Wang, Z. Yablokova, Y. V. Zaborov, D. N. Zavyalov, S. I. Zvezdov, D. Y. High Energy Astrophysical Phenomena Baikal-GVD is a new-generation neutrino telescope under final construction stages in Lake Baikal, Russia. With an instrumented volume already at 0.7 km$^3$, Baikal-GVD is currently the largest neutrino telescope in the Northern hemisphere. A sub-degree angular resolution, made possible thanks to high purity of Baikal water, further enhances Baikal-GVD sensitivity to cosmic neutrino sources. In this work, we employ track-like events collected from the partially completed detector between April 2019 and March 2024 to search for muon neutrino fluxes from 92 astrophysical objects of interest. For this, a $χ^2$-based track reconstruction method is used along with a cut-based analysis. The analysis uses upward-going muons only, providing coverage for declinations between -90$^\circ$ and +38$^\circ$. No significant excess has been found, so upper limits are reported. The obtained limits are competitive with those set by ANTARES and KM3NeT. We briefly comment on a possible low-significance indication of an excess from the direction of Westerlund 1. This work sets a major milestone on the way to full-scale scientific exploitation of Baikal-GVD data.
title	First constraints on point-like astrophysical sources using Baikal-GVD muon neutrino events
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2603.21261