Note: this is an archived version which has been superseded. The current SNR catalogue is at https://www.mrao.cam.ac.uk/surveys/snrs/

G20.0−0.2 ADS: search fulltext or title/keyword/abstract

• Right Ascension: 18 28 07
• Declination: −11 35
• Size (/arcmin): 10
• Type: F
• Flux density at 1 GHz (/Jy): 10
• Spectral Index: 0.1

Radio: Faint, filled-centre, polarised.

X-ray: Centrally brightened.

Point sources: OH source 20.1−0.1 is nearby.

Distance: HI absorption suggests 11.2 kpc.

References:

• Becker & Helfand 1985, ApJ, 297, L25. VLA at 1.4 and 5 GHz (12''). ADS
• Odegard 1986, AJ, 92, 1372. TPT at 57.5 MHz (7.'2×8': S=8.5±2 Jy), plus review of flux densities. ADS
• Junkes et al. 1988, LNP, 316, 134. Effelsberg 100-m at 2.7 GHz (4.'3), including polarisation. ADS
• Biggs & Lyne 1996, MNRAS, 282, 691. Pulsar search. ADS
• Sun et al. 2011, A&A, 536, A83. Urumqi 25-m at 5 GHz (9.'5: S=9.2±0.5 Jy) including polarisation and review of flux densities. ADS
• Petriella et al. 2013, A&A, 554, A73. Chandra observations, plus CO and HI observations of region. ADS
• Acero et al. 2016, ApJS, 224, 8. Fermi observations. ADS
• Ranasinghe & Leahy 2018, AJ, 155, 204. VGPS HI absorption observations. ADS
• Dokara et al. 2021, A&A, 651, A86. VLA at 4 to 8 GHz (18'': S=0.8 Jy) including polarisation, and Spitzer observations. ADS
• Sofue et al. 2021, ApJS, 253, 17. Nobeyama 45-m CO observations (20'') of region. ADS

Last updated: 20 Dec 2022

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