| Canonical Name: | HESS J1708-443 |
| TeVCat Name: | TeV J1708-443 |
| Other Names: | PSR B1706-44, G343.1-2.3 |
| Source Type: | PWN |
| R.A.: | 17 08 11 (hh mm ss) |
| Dec.: | -44 20 00 (dd mm ss) |
| Gal Long: | 343.06 (deg) |
| Gal Lat: | -2.38 (deg) |
| Distance: | 2.3 kpc |
| Flux: | 0.17 (Crab Units) |
| Energy Threshold: | 1000 GeV |
| Spectral Index: | 2 |
| Extended: | Yes |
| Size (X): | 0.29 (deg) |
| Size (Y): | 0.29 (deg) |
| Discovery Date: | 2009-07 |
| Discovered By: | H.E.S.S. |
| TeVCat SubCat: | Default Catalog |
Source Notes:
| H.E.S.S. Galactic Plane Survey (HGPS, 2018): |
| A selection of information for each of the 78 sources in the HGPS is provided in TeVCat. For full details, visit the HGPS website. |
| Name: | HESS J1708-443 |
| Source Class: | Unid |
| Identified Object: | None |
| R.A. (J2000): | 257.00 deg (17 07 59) |
| Dec. (J2000): | -44.29 deg (-44 17 19) |
| Positional uncertainty: | 0.087 deg |
| Spatial Model: | Gaussian |
| Size: | 0.279 +/- 0.031 deg |
| Spectral Model: | power law |
| Integral Flux > 1 TeV: | 3.32e-12 +/- 3.66e-13 cm-2 s-1 |
| Pivot Energy, E0: | 1.70 TeV |
| Diff. Flux at E0: | 1.23e-12 +/- 1.32e-13 cm-2 s-1 TeV-1 |
| Spectral Index: | 2.17 +/- 0.08 |
| HGPS Source Notes: | |
| | |
Three possible associations are listed in Table A.9. "This is a list of astronomical objects, extracted from catalogs of plausible counterparts,
which are are found to be spatially coincident with the HGPS source":
- G343.1−2.3 (COMP)
- B1706−44 (PSR)
- 3FGL J1709.7−4429 (3FGL)
Source position and its uncertainty:
From
Abramowski et al. (2011):
- R.A. (J2000): 17 08 11 +/- 17s
- Dec. (J2000): -44d 20' 00" +/- 4'
- Systematic error: 20"
Source Extent:
HESS:
Hoppe et al. (2009) &
H.E.S.S. Collaboration (2011):
- radius: 0.29 +/- 0.04 deg
Spectral Index:
HESS:
H.E.S.S. Collaboration (2011):
- -2.0 +/- 0.1 (stat) +/- 0.2 (sys)
Distance:
HESS:
Hoppe et al. (2009):
- The distance of the pulsar is quoted here: 2.3 +/- 0.3 kpc
- The SNR has an estimated distance of 3.0 kpc
Source Association:
From
Acero et al. (2013):
- This LAT emission from this source below 10 GeV is likely from a
pulsar
HESS:
Hoppe et al. (2009):
- The nature of the source remains to be confirmed
- Possible associations with PSRB1706–44 and SNRG343.1–2
HESS:
H.E.S.S. Collaboration (2011):
- Given the extended nature of the TeV source and the limited
statistics, it is unclear if the emission is associated with the PWN,
located at the edge of the H.E.S.S. source, or with the SNR, in which
the pulsar is thought to be embedded. Based on energetics and a wealth
of information at other wavelengths, neither interpretation can be
excluded at this time; furthermore, the possibility remains that both
sources contribute to the total observed VHE gamma-ray emission
Significance:
CANGAROO:
ApJ 703 p1725-1733 (2009)
- no value for the significance of the detection is provided
Seen by: CANGAROO, H.E.S.S.
-
Constraints on the Galactic Population of TEV Pulsar Wind Nebulae Using Fermi Large Area Telescope Observations
Acero, F. et al., ArXiv e-prints p (2013) [LINK]
-
Detection of very-high-energy gamma-ray emission from the vicinity of PSR B1706-44 and G343.1-2.3 with H.E.S.S
H.E.S.S. Collaboration, ArXiv e-prints p (2011) [LINK]
-
Detection of very-high-energy gamma-ray emission from the vicinity of PSR B1706-44 with H.E.S.S
Hoppe, S. et al., Proc. 31st ICRC
ArXiv e-prints p (2009) [LINK]
-
CANGAROO-III Observation of TeV Gamma Rays from the Vicinity of PSR B1706-44
Enomoto, R. et al., ApJ 703 p1725-1733 (2009) [LINK]
-
Reanalysis of Data Taken by the Cangaroo 3.8 Meter Imaging Atmospheric Cherenkov Telescope: PSR B1706-44, SN 1006, and Vela
Yoshikoshi, T. et al., ApJ 702 p631-648 (2009) [LINK]
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