PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Gamma-ray Astronomy (GA)
Observation the UHE Gamma-ray emission from the J1959+2850 with LHAASO
Y. Yu
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Pre-published on: January 09, 2024
Published on:
We report the discovery of an extended $\gamma-$ray source around the high spin-down power Fermi-LAT pulsar - 4FGL J1958+2846 with Large High-Altitude Air Shower Observatory (LHAASO), which is also resolved from previous public source LHAASO J1956+2845. The significance is 16.5 standard deviations above 25 TeV. The best-fit location is R.A. = 299.68$^\circ \pm$ 0.05$^\circ$ and decl. = 28.84$^\circ \pm$ 0.04$^\circ$, and the extension is $\sim$ 0.30$^\circ$.
DOI: https://doi.org/10.22323/1.444.0621
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