Detection of Extended VHE Gamma Ray Emission from G106.3+2.7 with VERITAS

Abstract

We report the detection of very-high-energy (VHE) gamma-ray emission from supernova remnant (SNR) G106.3+2.7. Observations performed in 2008 with the VERITAS atmospheric Cherenkov gamma-ray telescope resolve extended emission overlapping the elongated radio SNR. The 7.3 sigma (pre-trials) detection has a full angular extent of roughly 0.6deg by 0.4deg. Most notably, the centroid of the VHE emission is centered near the peak of the coincident 12CO (J = 1-0) emission, 0.4deg away from the pulsar PSR J2229+6114, situated at the northern end of the SNR. Evidently the current-epoch particles from the pulsar wind nebula are not participating in the gamma-ray production. The VHE energy spectrum measured with VERITAS is well characterized by a power law dN/dE = N_0(E/3 TeV)^{-G} with a differential index of G = 2.29 +/- 0.33stat +/- 0.30sys and a flux of N_0 = (1.15 +/- 0.27stat +/- 0.35sys)x 10^{-13} cm^{-2} s^{-1} TeV^{-1}. The integral flux above 1 TeV corresponds to ~5 percent of the steady Crab Nebula emission above the same energy. We describe the observations and analysis of the object and briefly discuss the implications of the detection in a multiwavelength context.

5 pages, 2 figures

References in corpus (9)

• Bright AGN Source List from the First Three Months of the Fermi Large Area Telescope All-Sky Survey
• Background Modelling in Very-High-Energy gamma-ray Astronomy
• The First VERITAS Telescope
• TeV Gamma-Ray Sources from a Survey of the Galactic Plane with Milagro
• Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List
• First detection of a VHE gamma-ray spectral maximum from a Cosmic source: H.E.S.S. discovery of the Vela X nebula
• VERITAS Observations of the gamma-Ray Binary LS I +61 303
• Exploring a SNR/Molecular Cloud Association Within HESS J1745-303
• Gamma-Ray Emission from PWNe Interacting with Molecular Clouds

Cited by in corpus (45)

• The First Fermi-LAT Catalog of Sources Above 10 GeV
• 3HWC: The Third HAWC Catalog of Very-High-Energy Gamma-ray Sources
• Cavity of Molecular Gas Associated with Supernova Remnant 3C 397
• The soft gamma-ray pulsar population: an high-energy overview
• Potential PeVatron supernova remnant G106.3+2.7 seen in the highest-energy gamma rays
• Fermi-LAT Search for Pulsar Wind Nebulae around gamma-ray Pulsars
• Detection of Intra-day Variability Timescales of Four High Energy Peaked Blazars with XMM-Newton
• The Hunt for Pevatrons: The Case of Supernova Remnants
• HAWC J2227+610 and its association with G106.3+2.7, a new potential Galactic PeVatron
• ASTRI Mini-Array Core Science at the Observatorio del Teide
• VER J2227+608: A Hadronic PeVatron Pulsar Wind Nebula?
• Understanding hadronic gamma-ray emission from supernova remnants
• IceCube Search for High-Energy Neutrino Emission from TeV Pulsar Wind Nebulae
• Laboratory Bounds on Electron Lorentz Violation
• Discovery of VHE $\gamma$-ray emission from the SNR G54.1+0.3
• 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
• 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
• The experimental challenge of detecting solar axion-like particles to test cosmological ALP-photon oscillation hypothesis
• Ultra-High-Energy Gamma-Ray Astronomy
• Expectation on Observation of Supernova Remnants with the LHAASO Project
• Neutrino Observations of LHAASO Sources: Present Constraints and Future Prospects
• Galactic and Extragalactic Sources of Very High Energy Gamma-rays
• LMC N132D: A mature supernova remnant with a power-law gamma-ray spectrum extending beyond 8 TeV
• Constraints on Hadronic Contribution to LHAASO Sources with Neutrino Observations
• Probing LHAASO Galactic PeVatrons through gamma-ray and neutrino correspondence
• Study of maximum electron energy of sub-PeV pulsar wind nebulae by multiwavelength modelling
• LHAASO J2226+6057 as a pulsar wind nebula
• Prospects for the detection of high-energy (E>25 GeV) Fermi pulsars with the Cherenkov Telescope Array
• A Possible Hadronic Origin of TeV Photon Emission from SNR G106.3+2.7
• Detection of the hard X-ray non-thermal emission from Kepler's supernova remnant
• Exploring the high energy frontiers of the Milky Way with ground-based gamma-ray astronomy: PeVatrons and the quest for the origin of Galactic cosmic-rays
• Highlight Talk: Recent Results from VERITAS
• Discovery of an Extended $\gamma$-ray Emission around the Supernova Remnant Candidate associated with PSR J0837$-$2454
• Testing the Molecular Cloud Paradigm for Ultra-High-Energy Gamma Ray Emission from the Direction of SNR G106.3+2.7
• Search for the Galactic accelerators of Cosmic-Rays up to the Knee with the Pevatron Test Statistic
• Quantitative constraint on the contribution of resolved gamma-ray sources to the sub-PeV Galactic diffuse gamma-ray flux measured by the Tibet ASγ experiment
• Constraining the production of cosmic rays by pulsars
• Searching for TeV emission from LHAASO J0341+5258 with VERITAS and HAWC
• Uncovering neutrinos from cosmic ray factories: the Multi Point Source method
• 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
• The current recorded signals of ultrahigh-energy $\gamma$-rays may come from EeVatrons in the galaxy