2009A&A...503..827X


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.14CEST08:06:17

2009A&A...503..827X - Astronomy and Astrophysics, volume 503, 827-836 (2009/9-1)

Radio properties of the low surface brightness SNR G65.2+5.7.

XIAO L., REICH W., FUERST E. and HAN J.L.

Abstract (from CDS):

SNR G65.2+5.7 is one of few supernova remnants (SNRs) that have been optically detected. It is exceptionally bright in X-rays and the optical [O III]-line. Its low surface brightness and large diameter ensure that radio observations of SNR G65.2+5.7 are technically difficult and thus have hardly been completed. Many physical properties of this SNR, such as spectrum and polarization, can only be investigated by radio observations. The λ11cm and λ6cm continuum and polarization observations of SNR G65.2+5.7 were completed with the Effelsberg 100-m and the Urumqi 25-m telescopes, respectively, to investigate the integrated spectrum, the spectral index distribution, and the magnetic field properties. Archival λ21cm data of the Effelsberg 100-m telescope were also used. The integrated flux densities of G65.2+5.7 at λ11cm and λ6cm are 21.9±3.1Jy and 16.8±1.8Jy, respectively. The power-law spectrum (S~να) is well fitted by α=-0.58±0.07 from 83MHz to 4.8GHz. Spatial spectral variations are small. Along the northern shell, strong depolarizion is observed at both wavelengths. The southern filamentary shell of SNR G65.2+5.7 is polarized by as much as 54% at λ6cm. There is significant depolarization at λ11cm and confusion with diffuse polarized Galactic emission. Using equipartition principle, we estimated the magnetic field strength for the southern filamentary shell to be between 20µG (filling factor 1) and 50µG (filling factor 0.1). A faint HI shell may be associated with the SNR. Despite its unusually strong X-ray and optical emission and its very low surface brightness, the radio properties of SNR G65.2+5.7 are found to be typical of evolved shell-type SNRs. SNR G65.2+5.7 may be expanding in a pre-blown cavity as indicated by a deficit of HI gas and a possible HI-shell.

Abstract Copyright:

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

VizieR on-line data: <Available at CDS (J/A+A/503/827): maps.dat fits/*>

Simbad objects: 36

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Number of rows : 36

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SNR G156.2+05.7 SNR 04 58 51.300 +51 50 28.00           ~ 110 1
2 SNR G180.0-01.7 SNR 05 39 00.000 +27 50 00.00           ~ 215 2
3 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3740 1
4 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 828 2
5 4C 30.37 Rad 19 23 25.23 +30 42 35.3           ~ 7 1
6 NVSS J192513+303118 Rad 19 25 13.60 +30 31 18.9           ~ 3 1
7 NVSS J192527+312923 Rad 19 25 27.20 +31 29 23.9           ~ 3 1
8 NVSS J192616+323551 Rad 19 26 16.00 +32 35 51.6           ~ 3 1
9 NVSS J192640+325742 Rad 19 26 40.29 +32 57 42.1           ~ 1 0
10 NVSS J192656+293719 Rad 19 26 55.89 +29 37 19.4           ~ 2 1
11 NVSS J192711+295254 Rad 19 27 11.50 +29 52 54.5           ~ 2 1
12 NVSS J192733+321401 Rad 19 27 33.00 +32 14 01.3           ~ 3 1
13 LBN 066.11+07.14 HII 19 28.7 +32 41           ~ 8 0
14 NVSS J193028+302742 Rad 19 30 28.63 +30 27 41.2           ~ 2 1
15 NVSS J193046+310559 Rad 19 30 46.83 +31 05 59.6           ~ 2 1
16 ICRF J193108.6+312233 QSO 19 31 08.6728039113 +31 22 33.418976531           ~ 7 1
17 NVSS J193114+291235 Rad 19 31 14.40 +29 12 35.2           ~ 3 1
18 PSR J1931+30 Psr 19 31 28 +30 35.0           ~ 8 0
19 NVSS J193245+310610 Rad 19 32 45.00 +31 06 10.7           ~ 2 1
20 SNR G065.2+05.7 SNR 19 33.0 +31 10           ~ 89 0
21 NVSS J193348+305145 Rad 19 33 48.95 +30 51 45.1           ~ 1 0
22 NVSS J193419+292007 Rad 19 34 19.8 +29 20 07           ~ 3 1
23 4C 32.60 Rad 19 34 38.50 +32 24 48.0           ~ 6 1
24 HD 184738 PN 19 34 45.2337512278 +30 30 58.951476338   10.41 10.44     [WC9] 920 0
25 4C 29.58 Rad 19 35 34.3 +30 08 01           ~ 4 1
26 NVSS J193556+330822 Rad 19 35 56.30 +33 08 22.0           ~ 3 1
27 NVSS J193658+311725 Rad 19 36 58.64 +31 17 24.6           ~ 2 1
28 NVSS J193838+302355 Rad 19 38 38.29158 +30 23 55.4731           ~ 3 0
29 NVSS J194003+313740 Rad 19 40 03.40 +31 37 38.0           ~ 2 1
30 NVSS J194026+310623 Rad 19 40 26.10 +31 06 23.0           ~ 2 1
31 NVSS J194039+294446 Rad 19 40 39.90 +29 44 46.0           ~ 4 1
32 NVSS J194214+321538 Rad 19 42 14.78 +32 15 39.7           ~ 3 1
33 NVSS J194229+322446 Rad 19 42 29.60 +32 24 46.9           ~ 3 1
34 NVSS J194300+315814 Rad 19 43 00.70 +31 58 14.2           ~ 3 1
35 NVSS J194405+304645 Rad 19 44 05.07 +30 46 45.3           ~ 3 1
36 NAME Cyg Complex reg 20 32 +45.0           ~ 520 0

    Equat.    Gal    SGal    Ecl

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2020.08.14-08:06:17

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