SIMBAD references

2007ApJ...665.1297H - Astrophys. J., 665, 1297-1303 (2007/August-3)

Discovery of the putative pulsar and wind nebula associated with the TeV gamma-ray source HESS J1813-178.

HELFAND D.J., GOTTHELF E.V., HALPERN J.P., CAMILO F., SEMLER D.R., BECKER R.H. and WHITE R.L.

Abstract (from CDS):

We present a Chandra X-ray observation of G12.82-0.02, a shell-like radio supernova remnant coincident with the TeV gamma-ray source HESS J1813-178. We resolve the X-ray emission from the colocated Advanced Satellite for Cosmology and Astrophysics (ASCA) source into a point source surrounded by structured diffuse emission that fills the interior of the radio shell. The morphology of the diffuse emission strongly resembles that of a pulsar wind nebula. The spectrum of the compact source is well characterized by a power law with index Γ~1.3, typical of young and energetic rotation-powered pulsars. For a distance of 4.5 kpc, consistent with the X-ray absorption and an association with the nearby star formation region W33, the 2-10 keV X-ray luminosities of the putative pulsar and nebula are LPSR=3.2x1033 ergs/s and LPWN=1.4x1034 ergs/s, respectively. Both the flux ratio of LPWN/LPSR=4.3 and the total luminosity of this system predict a pulsar spin-down power of E{dot}>1037 ergs/s^, placing it among the 10 most energetic young pulsars in the Galaxy. A deep search for radio pulsations using the Parkes telescope sets an upper limit of ~0.07 mJy at 1.4 GHz for periods ≳50 ms. We discuss the energetics of this source and consider briefly the proximity of bright H II regions to this and several other High Energy Stereoscopic System (H.E.S.S.) sources, which may produce their TeV emission via inverse Compton scattering.

Abstract Copyright:

Journal keyword(s): Stars: Pulsars: General - stars: individual (CXOU J181335.1-174957) - stars: individual (G12.82-0.02) - Stars: Neutron - ISM: Supernova Remnants - X-Rays: Stars

VizieR on-line data: <Available at CDS (J/ApJ/665/1297): table1.dat>

Nomenclature: Table 1: [HGH2007] NN (Nos 1-75).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 19

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2021.03.02-06:26:58

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