Note: this is an archived version which has been superseded.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

G27.4+0.0 ADS: search fulltext or title/keyword/abstract

4C−04.71

• Right Ascension: 18 41 19
• Declination: −04 56
• Size (/arcmin): 4
• Type: S
• Flux density at 1 GHz (/Jy): 6
• Spectral Index: 0.68

Notes: Early references refer to G27.3−0.1 (Kes 73), a supposed larger remnant.

Radio: Incomplete shell.

X-ray: Diffuse emission, with central low period pulsar.

Point sources: Central AXP.

Distance: HI absorption suggests 7.5 to 9.8 or 5.8 kpc, association with CO suggests 9 kpc, H₂ emission suggests 5.8 kpc.

References:

• Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5'). ADS
• Clark et al. 1975, AuJPA, 37, 75. Molonglo at 408 MHz (3': S=4.4 Jy). ADS
• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8.'4) and 5 GHz (4.'4). ADS
• Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6.'8: S=2.0±0.5 Jy). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2.'6). ADS
• Caswell et al. 1982, MNRAS, 200, 1143. FIRST at 1415 MHz (45''×60'': S=3.5 Jy). Revise S_408 MHz=10.4 Jy, and S_5 GHz=1.9±0.2 Jy. ADS
• Kriss et al. 1985, ApJ, 288, 703. Einstein observations, plus VLA at 1.4 and 5 GHz (12''). ADS
• Sanbonmatsu & Helfand 1992, AJ, 104, 2189. VLA at 1.4 GHz for HI absorption. ADS
• Helfand et al. 1994, ApJ, 434, 627. ROSAT observations, particularly of central source. ADS
• Green et al. 1997, AJ, 114, 2058. Parkes 64-m OH observations, including nearby masers. ADS
• Vasisht & Gotthelf 1997, ApJ, 486, L129. ASCA detection of pulsar. ADS
• Gotthelf & Vasisht 1997, ApJ, 486, L133. ASCA observations. ADS
• Gotthelf et al. 1999, ApJ, 522, L49. X-ray timing observations of pulsar. ADS
• Sugizaki et al. 2001, ApJS, 134, 77. ASCA survey observations. ADS
• Mereghetti et al. 2001, MNRAS, 321, 143. Search for optical/IR counterpart to pulsar. ADS
• Kuiper et al. 2004, ApJ, 613, 1173. X-ray observations of pulsar. ADS
• Tian & Leahy 2008, ApJ, 677, 292. VGPS at 1.4 GHz (1') including HI. ADS
• Mizuno et al. 2010, AJ, 139, 1542. Spitzer observations. ADS
• An et al. 2013, ApJ, 779, 163. NuSTAR and other observations. ADS
• Kumar et al. 2014, ApJ, 781, 41. Chandra and XMM-Newton observations. ADS
• Froebrich et al. 2015, MNRAS, 454, 2586. H₂ IR observations. ADS
• Kilpatrick et al. 2016, ApJ, 816, 1. CO observations, including broad lines. ADS
• Koo et al. 2016, ApJ, 821, 20. Spitzer and Herschel flux densities (and comparison with X-ray properties). ADS
• Yeung et al. 2017, ApJ, 837, 69. Fermi observations. ADS
• Borkowski & Reynolds 2017, ApJ, 846, 13. Chandra expansion studies. ADS
• Liu et al. 2017, ApJ, 851, 37. Fermi and CO observations. ADS
• Ranasinghe & Leahy 2018, AJ, 155, 204. VGPS HI absorption observations. ADS
• Lee et al. 2019, AJ, 157, 123. [FeII] and H₂ IR observations. ADS
• Lee et al. 2020, AJ, 160, 263. H₂ IR 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
• Castelletti et al. 2021, A&A, 653, A62.VLA 74-MHz survey flux density, and other low-frequency radio flux densities. 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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