Note: this is an archived version which has been superseded.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

G27.4+0.0     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 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 (60''×45'': 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 γ-ray observations. ADS

Last updated: 30 May 2014