| Canonical Name: | ARGO J2031+4157 |
| TeVCat Name: | TeV J2031+425 |
| Other Names: | Cygnus Cocoon
MGRO J2031+41
TeV J2032+4130 |
| Source Type: | Superbubble |
| R.A.: | 20 31 12 (hh mm ss) |
| Dec.: | +42 30 00 (dd mm ss) |
| Gal Long: | 80.95 (deg) |
| Gal Lat: | 1.80 (deg) |
| Distance: | 1.4 kpc |
| Flux: | 0.8 (Crab Units) |
| Energy Threshold: | 1000 GeV |
| Spectral Index: | 2.6 |
| Extended: | Yes |
| Size (X): | 1.80 (deg) |
| Size (Y): | 1.80 (deg) |
| Discovery Date: | 2014-08 |
| Discovered By: | ARGO-YBJ |
| TeVCat SubCat: | Default Catalog |
Source Notes:
This source was
originally proposed as being associated with
TeV J2032+4130 and
MGRO J2031+41.
Source Position:
From
Bartoli et al. (2014):
- R.A. (J2000): 307.8 +/- 0.8 deg (= 20h 31m 12s +/- 192s)
- Dec. (J2000): 42.5 +/- 0.6 deg (= 42d 30' 00")
From
Bartoli et al. (2013):
- R.A. (J2000): 307.95 (= 20h 31m 48s)
- Dec. (J2000): 41.95 (= 41d 57' 00")
Source Extension:
From
Bartoli et al. (2014):
- extension: 1.8 +/- 0.5 deg
From
Bartoli et al. (2013):
- extension: 0.2 +0.4 -0.2 deg
Spectral Information:
From
Bartoli et al. (2014):
- Spectral index: 2.6 +/- 0.3
Source Classification:
From
Cao et al. (2021):
- ARGO J2031+4157 may be associated with
LHAASO J2032+4102
From
Bartoli et al. (2014):
- "The angular extension is consistent with that of the Cygnus Cocoon
as measured by Fermi-LAT and the spectrum also shows a good connection
with the one measured in the 1–100 GeV energy range. These features
suggest to identify ARGO J2031+4157 as the counterpart of the Cygnus
Cocoon at TeV energies. The Cygnus Cocoon, located in the star-forming
region of Cygnus X, is interpreted as a cocoon of freshly accelerated
cosmic rays related to the Cygnus superbubble."
- "Even if a yet undiscovered nebula cannot be ruled out, such a large
extended emission is likely due to the collective action of multiple
shocks in a superbubble."
Seen by: ARGO-YBJ
-
Modeling of GeV-TeV gamma-ray emission of Cygnus Cocoon
Bykov, A.M. and Kalyashova, M.E., arXiv e-prints parXiv:2203.09842 (2022) [LINK]
-
Limits on Leptonic TeV Emission from the Cygnus Cocoon with Swift-XRT
Guevel, David et al., arXiv e-prints parXiv:2211.07617 (2022) [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]
-
Observation of photons above 300 TeV associated with a high-energy neutrino from the Cygnus Cocoon region
Dzhappuev, D.D. et al., arXiv e-prints parXiv:2105.07242 (2021) [LINK]
-
The Hunt for Pevatrons: The Case of Supernova Remnants
Cristofari, P., arXiv e-prints parXiv:2110.07956 (2021) [LINK]
-
Testing the Limits of Particle Acceleration in Cygnus OB2 with HAWC
Hona, B. et al., 36th International Cosmic Ray Conference (ICRC2019) 36 p699 (2019) [LINK]
-
Massive Stars as Major Factories of Galactic Cosmic Rays
Aharonian, F. et al., ArXiv e-prints p (2018) [LINK]
-
Constraining cosmic ray acceleration in young star clusters using multi-wavelength observations
Gupta, S. et al., ArXiv e-prints p (2018) [LINK]
-
Cosmic rays from supernova remnants and superbubbles
Lingenfelter, R.E., ArXiv e-prints p (2018) [LINK]
-
Latest results from the ARGO-YBJ experiment
Di Sciascio, G. and for the ARGO-YBJ Collaboration, ArXiv e-prints p (2015) [LINK]
-
Identification of the TeV Gamma-Ray Source ARGO J2031+4157 with the Cygnus Cocoon
Bartoli, B. et al., ApJ 790 p152 (2014) [LINK]
-
TeV Gamma-Ray Survey of the Northern Sky Using the ARGO-YBJ Detector
Bartoli, B. et al., ApJ 779 p27 (2013) [LINK]
-
Observation of TeV Gamma Rays from the Cygnus Region with the ARGO-YBJ Experiment
Bartoli, B. et al., ApJ 745 pL22 (2012) [LINK]
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