International Conference of Physicists.SPb, October 20-24, 2025, Saint Petersburg
Astronomy and Astrophysics

Observations of the Boomerang Nebula with the TAIGA-HISCORE facility

V. S. Samoliga<sup>ab

a</sup> Irkutsk State University
^b Novosibirsk State University

Abstract: An analysis of TAIGA-HiSCORE data to evaluate the signal from the region of the Boomerang Nebula has been conducted. A comparison of the results obtained without and with gamma-hadron separation has been performed. The significance distribution follows a normal law, indicating the predominance of background events. The obtained results confirm the necessity of improving gamma-hadron separation methods, in particular, through the commissioning of new components of the TAIGA complex (scintillation and water Cherenkov detectors). This will enhance the sensitivity to gamma-ray sources with energies above 100 TeV.

Keywords: cosmic rays, extensive air showers, gamma-ray astronomy, background estimation, signal significance.

Received: 05.05.2025
Revised: 18.07.2025
Accepted: 19.07.2025

DOI: 10.61011/JTF.2025.12.61794.238-25

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