HAWC J2227+610 and its association with G106.3+2.7, a new potential Galactic PeVatron

Abstract

We present the detection of VHE gamma-ray emission above 100 TeV from HAWC J2227+610 with the HAWC observatory. Combining our observations with previously published results by VERITAS, we interpret the gamma-ray emission from HAWC J2227+610 as emission from protons with a lower limit in their cutoff energy of 800 TeV. The most likely source of the protons is the associated supernova remnant G106.3+2.7, making it a good candidate for a Galactic PeVatron. However, a purely leptonic origin of the observed emission cannot be excluded at this time.

arXiv commentAccepted for publication by ApJL

References in corpus (30)

• Astropy: A Community Python Package for Astronomy
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• The CO-to-H2 Conversion Factor
• The Milky Way in Molecular Clouds: A New Complete CO Survey
• Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
• Fermi Large Area Telescope Fourth Source Catalog
• Detection of the Characteristic Pion-Decay Signature in Supernova Remnants
• ANTARES: the first undersea neutrino telescope
• Acceleration of petaelectronvolt protons in the Galactic Centre
• Observation of the Crab Nebula with the HAWC Gamma-Ray Observatory
• The 2HWC HAWC Observatory Gamma Ray Catalog
• TeV Gamma-Ray Sources from a Survey of the Galactic Plane with Milagro
• The 1st Fermi Lat Supernova Remnant Catalog
• Multiple Galactic Sources with Emission Above 56 TeV Detected by HAWC
• Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List
• Probing the Galactic Origin of the IceCube Excess with Gamma-Rays
• Measurement of the Crab Nebula Spectrum Past 100 TeV with HAWC
• PSR J2229+6114: Discovery of an Energetic Young Pulsar in the Error Box of the EGRET Source 3EG J2227+6122
• Sensitivity of the KM3NeT/ARCA neutrino telescope to point-like neutrino sources
• Pulsar Spin-Velocity Alignment: Kinematic Ages, Birth Periods and Braking Indices
• Search for extended sources in the Galactic Plane using 6 years of Fermi-Large Area Telescope Pass 8 data above 10 GeV
• New long-term braking index measurements for glitching pulsars using a glitch-template method
• First all-flavour Neutrino Point-like Source Search with the ANTARES Neutrino Telescope
• Search for steady point-like sources in the astrophysical muon neutrino flux with 8 years of IceCube data
• Molecular Clouds as a Probe of Cosmic-Ray Acceleration in a Supernova Remnant
• The SNR G106.3+2.7 and its Pulsar Wind Nebula: relics of triggered star formation in a complex environment
• Detection of Extended VHE Gamma Ray Emission from G106.3+2.7 with VERITAS
• Fermi LAT detection of pulsed gamma-rays from the Vela-like pulsars PSR J1048-5832 and PSR J2229+6114
• VER J2227+608: A Hadronic PeVatron Pulsar Wind Nebula?
• Cosmic rays in galactic and extragalactic magnetic fields

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• The Hunt for Pevatrons: The Case of Supernova Remnants
• The High-Altitude Water Cherenkov (HAWC) Observatory in México: The Primary Detector
• Evidence of 200 TeV photons from HAWC J1825-134
• ASTRI Mini-Array Core Science at the Observatorio del Teide
• Constraints on the models of the origin of high-energy astrophysical neutrinos
• Evidence that Ultra-High-Energy Gamma Rays are a Universal Feature Near Powerful Pulsars
• Observation of photons above 300 TeV associated with a high-energy neutrino from the Cygnus region
• MAGIC observations provide compelling evidence of the hadronic multi-TeV emission from the putative PeVatron SNR G106.3+2.7
• Evidence for PeV Proton Acceleration from Fermi-LAT Observations of SNR G106.3+2.7
• Where are Milky Way's Hadronic PeVatrons?
• Hadronic vs leptonic models for $\gamma$-ray emission from VER J2227+608
• X-Ray Emission from the PeVatron-candidate Supernova Remnant G106.3+2.7
• Revealing a peculiar supernova remnant G106.3+2.7 as a petaelectronvolt proton accelerator with X-ray observations
• Magnetically Arrested Disks in Quiescent Black-Hole Binaries: Formation Scenario, Observable Signatures, and Potential PeVatrons
• A deep learning method for the trajectory reconstruction of cosmic rays with the DAMPE mission
• Detectability of southern gamma-ray sources beyond 100 TeV with ALPAQUITA, the prototype experiment of ALPACA
• Ultra-High-Energy Gamma-Ray Astronomy
• The LHAASO PeVatron bright sky: what we learned
• Search for Extended Sources of Neutrino Emission in the Galactic Plane with IceCube
• On the hard $\gamma$-ray spectrum of the potential PeVatron supernova remnant G106.3+2.7
• Detection of a new molecular cloud in the LHAASO J2108+5157 region supporting a hadronic PeVatron scenario
• Galactic and Extragalactic Sources of Very High Energy Gamma-rays
• Reacceleration of Galactic Cosmic Rays Beyond the Knee at the Termination Shock of a Cosmic-Ray-Driven Galactic Wind
• Searches for Neutrinos from LHAASO ultra-high-energy γ-ray sources using the IceCube Neutrino Observatory
• Constraints on Hadronic Contribution to LHAASO Sources with Neutrino Observations
• A Possible Hadronic Origin of TeV Photon Emission from SNR G106.3+2.7
• Measurement of the Gamma-Ray Energy Spectrum beyond 100 TeV from the HESS J1843$-$033 Region
• Escape of cosmic rays from perpendicular shocks in the circumstellar magnetic field
• Search for joint multimessenger signals from potential galactic cosmic-ray accelerators with HAWC and IceCube
• Discovery of an Extended $\gamma$-ray Emission around the Supernova Remnant Candidate associated with PSR J0837$-$2454
• Top Hadrons in Lorentz-Violating Field Theory
• Search for the Galactic accelerators of Cosmic-Rays up to the Knee with the Pevatron Test Statistic
• Revisiting the propagation of highly-energetic gamma rays in the Galaxy
• Testing the Molecular Cloud Paradigm for Ultra-High-Energy Gamma Ray Emission from the Direction of SNR G106.3+2.7
• PeVatron Candidate SNR G106.3+2.7 in a Low-density Cavity: a Multiwavelength Test
• Can a single supernova remnant account for the gamma-ray emission of G106.3+2.7?
• IRAM 30 m CO-line Observation toward PeVatron Candidate G106.3+2.7: Direct Interaction between the Shock and the Molecular Cloud Remains Uncertain
• Escape of cosmic rays from perpendicular shocks in the interstellar magnetic field