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Observation Date (UT) Observation Lat

Canonical Name:CTB 37B
TeVCat Name:TeV J1713-382
Other Names:HESS J1713-381, G 348.7+0.3
Source Type:Shell
R.A.:17 13 57.6 (hh mm ss)
Dec.:-38 12 00 (dd mm ss)
Gal Long: 348.65 (deg)
Gal Lat: 0.38 (deg)
Distance: 13.2 kpc
Flux:0.018 (Crab Units)
Energy Threshold:200 GeV
Spectral Index:2.65
Extended:Yes
Size (X):0.06 (deg)
Size (Y):0.06 (deg)
Discovery Date:2006-01
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 J1713-381
Source Class: Unid
Identified Object: None
R.A. (J2000): 258.46 deg (17 13 51)
Dec. (J2000): -38.22 deg (-38 13 13)
Positional uncertainty: 0.033 deg
Spatial Model: Gaussian
Size: 0.092 +/- 0.017 deg
Spectral Model: power law
Integral Flux > 1 TeV: 5.21e-13 +/- 7.15e-14 cm-2 s-1
Pivot Energy, E0: 0.79 TeV
Diff. Flux at E0: 1.74e-12 +/- 1.64e-13 cm-2 s-1 TeV-1
Spectral Index: 2.74 +/- 0.12
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":
- G348.7+0.3 (SNR)
- CXOU J171405.7−381031 (EXTRA)
- J1714−3810 (PSR)
"EXTRA associations: For completeness, in addition to the associations obtained through the catalog-based, automatic procedure, we add a list of 20 extra associated objects that are plausible counterparts for some HGPS sources and are not covered by the limited set of catalogs we use."


Source position and its uncertainty:
From Aharonian et al. (2006):
- l: 348.65 +/- 0.03 (deg)
- b: +0.38 +/- 0.03 (deg)
- R.A. (deg): 258.49 (Convert to HMS: 17 13 57.6)
- Dec. (deg): -38.20 (Convert to HMS: -38 12 00)

Source Extent:
From Aharonian et al. (2006):
- radius: 0.06 +/- 0.04 deg

Distance:
From Tian & Leahy (2012):
- "CTB 37B is at a distance of ~13.2 kpc (previously 5 to 9 kpc)"
From Horvarth & Allen (2011)
- "As in many other cases, the distance to the remnant is uncertain
(10.2 +/- 3.5kpc; Caswell et al. 1975). It seems safe to assume, taking
the angular diameter and the smallest value of the distance range,
that R > 10pc, and possibly a figure as big as 20pc for the largest
distance scale."


Seen by: H.E.S.S.
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