2009MNRAS.398..249H

Query : 2009MNRAS.398..249H

2009MNRAS.398..249H - Mon. Not. R. Astron. Soc., 398, 249-254 (2009/September-1)

G64.5+0.9: a new shell supernova remnant with unusual central emission AMI Consortium:.

HURLEY-WALKER N., DAVIES M.L., FRANZEN T.M.O., GRAINGE K., GREEN D.A., HOBSON M.P., LASENBY A., POOLEY G., RODRIGUEZ-GONZALVEZ C., SAUNDERS R.D.E., SCAIFE A.M.M., SCOTT P.F., SHIMWELL T., TITTERINGTON D., WALDRAM E. and ZWART J.T.L.

Abstract (from CDS):

We present observations between 1.4 and 18GHz confirming that G64.5+0.9 is a new Galactic shell supernova remnant, using the Very Large Array and the Arcminute Microkelvin Imager. The remnant is a shell ≃8 arcmin in diameter with a spectral index of α = 0.47±0.03 (with α defined such that flux density S varies with frequency ν as S ∝ ν–α). There is also emission near the centre of the shell, ≃1 arcmin in extent, with a spectral index of α = 0.81±0.02. We do not find any evidence for spectral breaks for either source within our frequency range. The nature of the central object is unclear and requires further investigation, but we argue that it is most unlikely to be extragalactic. It is difficult to avoid the conclusion that it is associated with the shell, although its spectrum is very unlike that of known pulsar wind nebulae.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): radiation mechanisms: non-thermal - supernova remnants - radio continuum: ISM

CDS comments: In ref. list Tian & Leahy 2006 is 2006A&A...455.1053T (not AJ). G328.1-1.8 not found, may be misprint for G326.3-1.8 ?

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2815 2
2 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4341 2
3 SNR G353.9-02.0 SNR 17 38.9 -35 11           ~ 17 0
4 ICRF J192559.6+210626 BLL 19 25 59.60535459 +21 06 26.1620257           ~ 203 1
5 SNR G064.5+00.9 SNR 19 50 25 +28 16.0           ~ 10 0
6 SNR G065.7+01.2 SNR 19 52 13.70 +29 25 08.0           ~ 100 0
7 4C 31.56 QSO 20 23 19.01734326 +31 53 02.3060318           ~ 115 1

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