Speaker
Description
We report the discovery of an extended γ-ray source named LHAASO J0534+3535 with a significance of about 8 standard deviations for energy from TeVs to tens of TeVs. In addition to the γ-ray source detected by LHAASO, there is only one old supernova remnant candidate, G172.8+1.5, and two 4FGL GeV sources identified within a 4-degree radius of LHAASO J0534+3535. G172.8+1.5 is located in one of the largest star-forming regions in the outer Galaxy, characterized by HI gas that extends to velocities beyond those allowed by Galactic rotation, spanning an area of 4.4 degrees by 3.4 degrees at a distance of 1.8 kpc. LHAASO J0534+3535 is detected in the center of the supernova remnant G172.8+1.5, with an extension of approximately 0.5 degrees, located 0.6 degrees away from the two nearby FGL GeV sources. The multi-wavelength energy spectrum and its upper limits are analyzed using LHAASO and Fermi-LAT data, and are fitted using both hadronic and leptonic models. The results of the data analysis for J0534+3535, as well as its potential correlation with G172.8+1.5 and the two nearby 4FGL sources, will be presented.
| Collaboration(s) | LHAASO |
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