| Canonical Name: | SNR G106.3+02.7 |
| TeVCat Name: | TeV J2227+608 |
| Other Names: | VER J2227+608
HAWC 2227+610 |
| Source Type: | Shell |
| R.A.: | 22 27 59 (hh mm ss) |
| Dec.: | +60 52 37 (dd mm ss) |
| Gal Long: | 106.35 (deg) |
| Gal Lat: | 2.71 (deg) |
| Distance: | 0.8 kpc |
| Flux: | 0.05 (Crab Units) |
| Energy Threshold: | 1000 GeV |
| Spectral Index: | 2.29 |
| Extended: | Yes |
| Size (X): | 0.27 (deg) |
| Size (Y): | 0.18 (deg) |
| Discovery Date: | 2009-07 |
| Discovered By: | VERITAS |
| Green's Catalog: | Link |
| TeVCat SubCat: | Default Catalog |
Source Notes:
Source position and its uncertainty:
From
Acciari et al. (2009):
- R.A. (J2000): 22h 27m 59s +/- 0.07 deg (stat)
- Dec. (J2000): 60d 52' 37" +/- 0.04 deg (stat)
- there is an additional combined systematic uncertainty of 0.07deg
Source Extent:
From
Acciari et al. (2009):
- semi-major axis: 0.27 +/- 0.05 deg
- semi-minor axis: 0.18 +/- 0.03 deg
- angle: 22 deg east of north
Spectral Index:
From
Acciari et al. (2009):
- 2.29 +/- 0.33(stat) +/- 0.30(syst)
Source Association:
From
Cao et al. (2021):
- SNR G106.3+02.7 / VER J2227+608 / HAWC 2227+610 may be associated with
LHAASO J2226+6057
From
Fujita et al. (2021):
- "We report a discovery of diffuse X-ray emission around the
supernova remnant (SNR) G106.3+2.7, which is associated with VER
J2227+608 and HAWC J2227+610 and is known as a candidate for a PeV
cosmic ray accelerator (PeVatron)."
- "We analyze observational data of Suzaku around the SNR and the
adjacent pulsar PSR J2229+6114."
- "We find diffuse X-ray emission that is represented by either
thermal or non-thermal one."
- "The intensity of the diffuse emission increases toward PSR
J2229+6114 in the same way as radio emission, and it is in contrast
with gamma-ray emission concentrated on a molecular cloud. The X-ray
photon index does not change with the distance from the pulsar and it
indicates that radiative cooling is ineffective and particle diffusion
is not extremely slow. The X-ray and radio emissions seem to be of
leptonic origin and the parent electrons may originate from the pulsar
or its wind nebula. The gamma-ray emission appears to be of hadronic
origin because of its spacial distribution. The parent protons may be
tightly confined in the cloud separately from the diffusing
electrons."
From
Xin et al. (2019):
- "We report the detection of GeV gamma-ray emission from the
very-high-energy (VHE) gamma-ray source VER J2227+608 associated with
the “tail” region of SNR G106.3+2.7. The GeV gamma-ray emission is
extended and spatially coincident with molecular clouds traced by CO
emission. The broadband GeV to TeV emission of VER J2227+608 can be
well fitted by a single power-law function with an index of 1.90 +/- 0.04,
without obvious indication of spectral cutoff toward high energies"
- The authors propose that a hadronic model could describe the gamma-ray emission
and: "suggest that VER J2227+608 may be powered by the PWN instead of
shocks of the SNR."
From
Acciari et al. (2009):
- Could be associated with PSR J2229+6114 (
Boomerang)
Seen by: VERITAS, MAGIC
-
PeVatron candidate SNR G106.3+2.7 in a low-density cavity: a multiwavelength test
Bao, Yiwei et al., MNRAS 528 p5487-5494 (2024) [LINK]
-
MAGIC observations provide compelling evidence of the hadronic multi-TeV emission from the putative PeVatron SNR G106.3+2.7
MAGIC Collaboration et al., arXiv e-prints parXiv:2211.15321 (2022) [LINK]
-
Evidence for PeV Proton Acceleration from Fermi-LAT Observations of SNR G 106.3 +2.7
Fang, Ke et al., Phys. Rev. Lett. 129 p071101 (2022) [LINK]
-
X-ray Emission from the PeVatron-Candidate Supernova Remnant G106.3+2.7
Fujita, Yutaka et al., arXiv e-prints parXiv:2101.10329 (2021) [LINK]
-
On the hard gamma-ray spectrum of the supernova remnant G106.3+2.7
Bao, Yiwei and Chen, Yang, arXiv e-prints parXiv:2103.01814 (2021) [LINK]
-
Potential PeVatron supernova remnant G106.3+2.7 seen in the highest-energy gamma rays
Amenomori, M. et al., Nature Astronomy p (2021) [LINK]
-
Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 gamma-ray Galactic sources
Cao, Z., Aharonian, F.A., An, Q., et al., Nature 594 p33-36 (2021) [LINK]
-
A Possible Hadronic Origin of TeV Photon Emission from SNR G106.3+2.7
Yang, Chuyuan et al., arXiv e-prints parXiv:2106.02629 (2021) [LINK]
-
The Hunt for Pevatrons: The Case of Supernova Remnants
Cristofari, P., arXiv e-prints parXiv:2110.07956 (2021) [LINK]
-
HAWC J2227+610: a potential PeVatron candidate for the CTA in the northern hemisphere
Verna, G. et al., arXiv e-prints parXiv:2110.07939 (2021) [LINK]
-
The current recorded signals of ultrahigh-energy gamma-rays may come from EeVatrons in the galaxy
Zhu, Wei et al., arXiv e-prints parXiv:2109.09319 (2021) [LINK]
-
HAWC J2227+610 and its association with G106.3+2.7, a new potential Galactic PeVatron
Albert, A. et al., arXiv e-prints parXiv:2005.13699 (2020) [LINK]
-
Hadronic vs leptonic models for gamma-ray emission from VER J2227+608
Liu, Siming et al., arXiv e-prints parXiv:2006.14946 (2020) [LINK]
-
VER J2227+608: A Hadronic PeVatron Pulsar Wind Nebula?
Xin, Yuliang et al., arXiv e-prints parXiv:1907.04972 (2019) [LINK]
-
VERITAS Observations of Supernova Remnants and Pulsar Wind Nebulae in the Fermi Era
Humensky, T.B. and for the VERITAS Collaboration, ArXiv e-prints p (2009) [LINK]
-
Detection of Extended VHE Gamma Ray Emission from G106.3+2.7 with Veritas
Acciari, V.A. et al., ApJ 703 pL6-L9 (2009) [LINK]
Want a reference added? Send a bibtex entry to
the TeVCat Team
