Year: 2025
Type: conference-paper
Abstract: The LHAASO~J2018+3651 region is one of the brightest sources in the sky at TeV energies. Photons with energies up to ∼0.27 PeV from this region have been detected with the Large High Altitude Air Shower Observatory (LHAASO) and here we present a detailed study of this region using more data from LHAASO. This analysis resolves the region into six sources: LHAASO~J2018+3641, LHAASO~J2019+3649, LHAASO~J2021+3657, LHAASO~J2016+3712, LHAASO~J2013+3610 and LHAASO~J2028+3655. An investigation of the morphology and spectrum for LHAASO~J2018+3641, LHAASO~J2019+3649 and LHAASO~J2021+3657 are the focus and we find that the spectrum above TeV deviates significantly from a single power-law, and is best described by a power-law with exponential cutoff. The three sources may be associated with PSR~J2021+3651 and its X-ray pulsar wind nebula. Additionally, LHAASO~J2016+3712 is tentatively associated with the evolved supernova remnant CTB 87.
DOI: 10.22323/1.501.0733
Authors: Huicai Li, Chao Hou, Bing Theodore Zhang, Xiao Zhang, Yang Chen, Ping Zhou, Jun Fang
Institutions: Nanjing Normal University, Nanjing University, Yunnan University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Award: G807347268
OpenAlex ID: W4414509874
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