| Canonical Name: | HESS J1303-631 |
| TeVCat Name: | TeV J1303-631 |
| Other Names: | PSR J1301-6305 |
| Source Type: | PWN |
| R.A.: | 13 02 48.0 (hh mm ss) |
| Dec.: | -63 10 39 (dd mm ss) |
| Gal Long: | 304.21 (deg) |
| Gal Lat: | -0.33 (deg) |
| Distance: | 6.6 kpc |
| Flux: | 0.17 (Crab Units) |
| Energy Threshold: | 380 GeV |
| Spectral Index: | |
| Extended: | Yes |
| Size (X): | 0.19 (deg) |
| Size (Y): | 0.14 (deg) |
| Discovery Date: | 2005-09 |
| 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 J1303-631 |
| Source Class: | PWN |
| Identified Object: | PSR J1301-6305 |
| R.A. (J2000): | 195.76 deg (13 03 01) |
| Dec. (J2000): | -63.19 deg (-63 11 36) |
| Positional uncertainty: | 0.024 deg |
| Spatial Model: | 2-Gaussian |
| Size: | 0.177 +/- 0.015 deg |
| Spectral Model: | power law |
| Integral Flux > 1 TeV: | 5.21e-12 +/- 3.47e-13 cm-2 s-1 |
| Pivot Energy, E0: | 1.87 TeV |
| Diff. Flux at E0: | 1.53e-12 +/- 3.73e-14 cm-2 s-1 TeV-1 |
| Spectral Index: | 2.33 +/- 0.02 |
| HGPS Source Notes: | |
| | |
This is one of the 31 firmly-identified objects among the HGPS sources and one of two sources for which energy-dependent morphology has been clearly established.
- "At higher energies,the extent of the emission shrinks and its barycenter moves closer to the pulsar."
Five 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"
- 2FHL J1303.4−6312e (2FHL)
- 3FGL J1303.0−6312e (3FGL)
- J1301−6305 (PSR)
- J1301−6310 (PSR)
- G304.1−0.2 (PWN)
Source position and its uncertainty:
From
The H.E.S.S. Collaboration (2012):
- RA (J2000): 13 02 48.0 +/- 3s(stat)
- Dec (J2000): -63 10 39 +/- 24"(stat)
- Note: "The fitted position is consistent with the one quoted in the
original discovery paper (
Aharonian et al. 2005), but slightly
shifted towards the pulsar position due to the (compared to the
discovery paper) higher energy threshold of the hard cuts used and the
presence of energy-dependent morphology."
From
Aharonian et al. (2005):
- RA (J2000): 13 03 00.4 +/- 4.4s(stat)
- Dec (J2000): -63 11 55 +/- 31"(stat)
- systematic error on pointing is 20" for R.A. and Dec.
Source Association:
From
Sushch et al. (2017):
- "Radio observations of the region surrounding PSR J1301-6305 at 5.5
GHz and 7.5 GHz were conducted with ATCA on September 5th, 2013. They
were dedicated to the search of the radio counterpart of the evolved
pulsar wind nebula HESS J1303-631... "
- "The collected data do not reveal any significant extended emission
associated with PSR J1301-6305. In addition, archival 1.384 GHz and
2.368 GHz data do not show any evidence for a radio counterpart of
HESS J1303-631."
- "Archival 1.384 GHz observations reveal a detection of an extended
structure centred at an angular distance of 190 from the pulsar. This
extended structure might be a Supernova remnant (SNR) and a potential
birth place of PSR J1301-6305."
From
Acero et al. (2013):
- Analysis of the LAT data from this source leads to its
classification as a PWN candidate
From
The H.E.S.S. Collaboration (2012):
- "Significant energy-dependent morphology of this source, as well as
the identification of an associated X-ray PWN from XMM-Newton
observations enable identification of the VHE source as an evolved PWN
associated to the pulsar PSR J1303-6305."
From
de Naurois (2011):
- classified as an older PWN having a complex morphology
with significant offset between the pulsar and nebula
Source Extent:
From
The H.E.S.S. Collaboration (2012):
- major axis: 0.194 +/- 0.008 deg
- minor axis: 0.145 +/- 0.006 deg
- position angle (counter clockwise from north): 147 +/- 6 deg
From
Aharonian et al. (2005):
- radius 0.16 +/- 0.02 deg
Distance:
From
The H.E.S.S. Collaboration (2012):
- a distance of 6.6 kpc is quoted based on the dispersion measure
- if the source is associated with the star-forming region, IRAS 13010-6254,
it could be at a distance of 12.4-12.9 kps
From
Aharonian et al. (2005):
- the distance range quoted for this object is 0.175 - 12 kpc.
Spectral Information:
From
The H.E.S.S. Collaboration (2012):
- Spectrum is best described as a power-law with an exponential cut-off
- Spectral index: 1.5 +/- 0.2
- Cut-off energy: 7.7 +/- 2.2 TeV
Seen by: H.E.S.S.
-
Study of maximum electron energy of sub-PeV pulsar wind nebulae by multiwavelength modelling
Joshi, Jagdish C. et al., arXiv e-prints parXiv:2205.00521 (2022) [LINK]
-
Connecting the ISM to TeV PWNe and PWN candidates
Voisin, F.J. et al., pasa 36 pe014 (2019) [LINK]
-
Radio Observations of the Region around the Pulsar Wind Nebula HESS J1303-631 with ATCA
Sushch, I. et al., ArXiv e-prints p (2017) [LINK]
-
Dense molecular gas at 12 mm towards Galactic TeV gamma-ray sources
de Wilt, P. et al., MNRAS 468 p2093-2113 (2017) [LINK]
-
Radio Observations of the Pulsar Wind Nebula HESS J1303-631 Field of View with ATCA
Sushch, I. et al., ArXiv e-prints p (2015) [LINK]
-
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]
-
Identification of HESS J1303-631 as a Pulsar Wind Nebula through gamma-ray, X-ray and radio observations
The H.E.S.S. Collaboration et al., ArXiv e-prints p (2012) [LINK]
-
New developments in the ancient PulsarWind Nebulae scenario
Tibolla, O. et al., ArXiv e-prints p (2011) [LINK]
-
Ancient Pulsar Wind Nebulae in light of recent GeV and TeV observations
Tibolla, O. et al., ArXiv e-prints p (2011) [LINK]
-
Serendipitous discovery of the unidentified extended TeV gamma-ray source HESS J1303-631
Aharonian, F. et al., A&A 439 p1013-1021 (2005) [LINK]
-
Chandra Observation of the Unidentified TeV Gamma-Ray Source HESS J1303-631 in the Galactic Plane
Mukherjee, R. and Halpern, J.P., ApJ 629 p1017-1020 (2005) [LINK]
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