Search for TeV Gamma-Ray Emission from Point-like Sources in the Inner Galactic Plane with a Partial Configuration of the HAWC Observatory

Abstract

A survey of the inner Galaxy region of Galactic longitude l in [+15, +50] degree and latitude b in [-4,+4] degree is performed using one-third of the High Altitude Water Cherenkov (HAWC) Observatory operated during its construction phase. To address the ambiguities arising from unresolved sources in the data, we use a maximum likelihood technique to identify point source candidates. Ten sources and candidate sources are identified in this analysis. Eight of these are associated with known TeV sources but not all have differential fluxes compatible with previous measurements. Three sources are detected with significances $>5\sigma$ after accounting for statistical trials, and are associated with known TeV sources.

Submitted to ApJ, 34 pages, 6 figures. Contact authors: Hao Zhou and C. Michelle Hui

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Cited by in corpus (25)

• Observation of the Crab Nebula with the HAWC Gamma-Ray Observatory
• The 2HWC HAWC Observatory Gamma Ray Catalog
• Constraints on Galactic Neutrino Emission with Seven Years of IceCube Data
• Heavy right-handed neutrino dark matter and PeV neutrinos at IceCube
• Pulsar TeV Halos Explain the TeV Excess Observed by Milagro
• Multiwavelength follow-up of a rare IceCube neutrino multiplet
• Prospects for Detecting Galactic Sources of Cosmic Neutrinos with IceCube: An Update
• Design and expected performance of a novel hybrid detector for very-high-energy gamma astrophysics
• A survey of active galaxies at TeV photon energies with the HAWC gamma-ray observatory
• The contribution of Galactic TeV pulsar wind nebulae to Fermi-LAT diffuse emission
• The TeV gamma-ray luminosity of the Milky-Way and the contribution of H.E.S.S. unresolved sources to VHE diffuse emission
• Dense molecular gas at 12 mm towards Galactic TeV gamma-ray sources
• Supernova remnants in the very-high-energy gamma-ray domain: the role of the Cherenkov telescope array
• Constraints on Hadronic Contribution to LHAASO Sources with Neutrino Observations
• Identifying Galactic Sources of High-Energy Neutrinos
• MAGIC and Fermi-LAT gamma-ray results on unassociated HAWC sources
• Radio and X-ray properties of the source G29.37+0.1 linked to HESS J1844-030
• Studying the nature of the unidentified gamma-ray source HESS J1841-055 with the MAGIC telescopes
• The Making of Catalogues of Very-High-Energy γ-ray Sources
• Probing the cosmic ray mass composition in the knee region through TeV secondary particle fluxes from solar surroundings
• Cherenkov telescope array extragalactic survey discovery potential and the impact of axion-like particles and secondary gamma rays
• First year results of the High Altitude Water Cherenkov observatory
• Detecting the brightest HAWC sources with IceCube in the upcoming years
• Observations of one young and three middle-aged $\gamma$-ray pulsars with the Gran Telescopio Canarias
• Searching for the optical counterparts of two young gamma-ray pulsars