| Canonical Name: | SNR G000.9+00.1 |
| TeVCat Name: | TeV J1747-281 |
| Other Names: | HESS J1747-281 |
| Source Type: | PWN |
| R.A.: | 17 47 23.2 (hh mm ss) |
| Dec.: | -28 09 06 (dd mm ss) |
| Gal Long: | 0.87 (deg) |
| Gal Lat: | 0.08 (deg) |
| Distance: | 8.5 kpc |
| Flux: | 0.02 (Crab Units) |
| Energy Threshold: | 200 GeV |
| Spectral Index: | 2.4 |
| Extended: | No |
| Discovery Date: | 2005-03 |
| 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 J1747-281 |
| Source Class: | PWN |
| Identified Object: | G0.9+0.1 |
| R.A. (J2000): | 266.85 deg (17 47 23) |
| Dec. (J2000): | -28.15 deg (-28 09 05) |
| Positional uncertainty: | 0.005 deg |
| Spatial Model: | Point-Like |
| Size: | N/A |
| Spectral Model: | power law |
| Integral Flux > 1 TeV: | 5.99e-13 +/- 1.29e-13 cm-2 s-1 |
| Pivot Energy, E0: | 1.00 TeV |
| Diff. Flux at E0: | 8.38e-13 +/- 1.32e-13 cm-2 s-1 TeV-1 |
| Spectral Index: | 2.40 +/- 0.11 |
| HGPS Source Notes: | |
| | |
"This is one of the fourteen EXTERN sources in the HGPS catalog, i.e., VHE sources in the HGPS region previously detected by H.E.S.S. that were not reanalyzed
in the paper:"
- "Given the difficulties with modeling complex source morphologies, we decided to restrict the HGPS analyses to a symmetrical Gaussian model assumption and
exclude all firmly identified shell-like sources and the very complex GC region from reanalysis."
- HESS J1747-281 is in the galactic centre region and is discussed in further detail in Aharonian et al. (2005).
"Composite SNRs have both a shell and an interior PWN detected at lower energies and can be more complex to identify correctly. If the angular size of
the shell emission is larger than the size of the VHE emission, we can identify the VHE emission as coming from the PWN filling the SNR. This is the
case, for example, for HESS J1747−281 (PWN in SNR G0.9+0.1)."
This is one of the 31 firmly-identified objects among the HGPS sources. Two 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":
- J1747−2809 (PSR)
- G0.9+0.1 (COMP)
Source characteristics:
From
Smith et al. (2015):
- this "composite supernova remnant consists of a bright, compact
radio PWN surrounded by an extended radio shell (
Helfand & Becker, 1987)"
Source position and its uncertainty:
From
Smith et al. (2015):
- Gal. Lon.: 0.86deg +/- 0.015deg (stat) +/- 0.013deg (syst)
- Gal. Lat.: 0.067deg +/- 0.02deg (stat) +/- 0.013deg (syst)
- Convert to R.A. / Dec.:
- R.A. (J2000): 17h 47m 23.61s
- Dec. (J2000): -28d 09' 59.4"
From
Aharonian et al. (2005):
- l: 0.872 +/- 0.005 deg (converts to R.A. (J2000): 17 47 23.21
- b: +0.076 +/- 0.005 deg (converts to Dec. (J2000): -28 09 05.6
- systematic error of 20" in each direction
- this is the position that is quoted in TeVCat
From
HESS Online Catalog:
- R.A. (J2000): 17 47 23.2
- Dec. (J2000): -28 09 06
Spectral Properties:
From
Smith et al. (2015):
- Spectral index: 2.3 +/- 0.1 (stat)
- "We find no strong indications of a spectral break up to approx 22 TeV
From
Aharonian et al. (2005):
- Spectral index: 2.40 +/- 0.11 (stat) +/- 0.20 (syst)
Seen by: H.E.S.S., VERITAS
-
VERITAS Observations of the Galactic Center Region at Multi-TeV Gamma-Ray Energies
Adams, C.B. et al., arXiv e-prints parXiv:2104.12735 (2021) [LINK]
-
Exploiting Morphological Data from Pulsar Wind Nebulae via a Spatio-Temporal Leptonic Transport Code
van Rensburg, C. et al., MNRAS p4 (2020) [LINK]
-
Constraining Models of the Pulsar Wind Nebula in SNR G0.9+0.1 via Simulation of its Detection Properties using the Cherenkov Telescope Array
Fiori, M. et al., MNRAS p (2020) [LINK]
-
Spectral Modelling of H.E.S.S.-detected Pulsar Wind Nebulae
van Rensburg, C. et al., ArXiv e-prints p (2018) [LINK]
-
Spatially-Dependent Modelling of Pulsar Wind Nebula G0.9+0.1
van Rensburg, C. et al., ArXiv e-prints p (2018) [LINK]
-
Simultaneous Spectral and Spatial Modelling of Young Pulsar Wind Nebulae
van Rensburg, C. and Paulus Kruger, C.V.~P., ArXiv e-prints p (2018) [LINK]
-
Observations of Sagittarius A* during the pericenter passage of the G2 object with MAGIC
Ahnen, M.L. et al., ArXiv e-prints p (2016) [LINK]
-
VERITAS Observations of The Galactic Center Ridge
Smith, A.W. and for the VERITAS Collaboration, ArXiv e-prints p (2015) [LINK]
-
Multiband emission from pulsar wind nebulae: a possible injection spectrum
Fang, J. and Zhang, L., A&A 515 pA20+ (2010) [LINK]
-
High resolution radio study of the pulsar wind nebula within the supernova remnant G0.9+0.1
Dubner, G. et al., A&A 487 p1033-1040 (2008) [LINK]
-
Very high energy gamma rays from the composite SNR G 0.9+0.1
Aharonian, F. et al., A&A 432 pL25-L29 (2005) [LINK]
-
G0.9 + 0.1 and the emerging class of composite supernova remnants
Helf et al., ApJ 314 p203-214 (1987) [LINK]
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