Note: this is an
archived version which has been superseded. The current SNR
catalogue is at
http://www.mrao.cam.ac.uk/surveys/snrs/
G111.7−2.1
Cassiopeia A, 3C461
- Right Ascension: 23 23 26
- Declination: +58 48
- Size (/arcmin): 5
- Type: S
- Flux density at 1 GHz (/Jy): 2400
- Spectral Index: 0.77
Notes: Presumably the remnant of a late 17th century SN.
- Radio: Bright shell with compact knots and extended plateau of emission; shows secular decline.
- Optical: Fast knots and quasi-stationary flocculli, with many filaments at large radii, and NE `jet'.
- X-ray: Incomplete shell, with hard spectral component.
- Point sources: Central compact X-ray source.
- Distance: Optical expansion gives 3.3 kpc.
References:
- Anderson & Rudnick 1995, ApJ, 441, 307. VLA at 1.4 GHz and 4.8 GHz, for proper motion studies.
ADS
- Kassim et al. 1995, ApJ, 455, L59. VLA at 74 (25'') and 332 MHz (6''), including spectral index comparisons.
ADS
- Anderson & Rudnick 1996, ApJ, 456, 234. VLA for spectral index comparisons.
ADS
- Schwarz et al. 1997, A&AS, 123, 43. WSRT at 1.4 GHz (30'') for HI absorption.
ADS
- O'Sullivan & Green 1999, MNRAS, 303, 575. Flux density changes at 13.5, 15.5 and 16.5 GHz.
ADS
- Agüeros & Green 1999, MNRAS, 305, 957. 151 MHz observations for bulk expansion studies.
ADS
- Gotthelf et al. 2001, ApJ, 552, L39. Chandra observations, showing outer shock.
ADS
- Hwang et al. 2001, ApJ, 560, L175. Chandra observations of Doppler shifted lines.
ADS
- Fesen et al. 2001, AJ, 122, 2644. HST observations.
ADS
- Reynoso & Goss 2002, ApJ, 575, 871. VLA at 5 GHz (6."4×6."0) for H2CO absorption studies.
ADS
- Morse et al. 2004, ApJ, 614, 727. HST proper motion studies.
ADS
- Krause et al. 2004, Nature, 432, 596. IR and molecular line observations of surroundings.
ADS
- Bamba et al. 2005, ApJ, 621, 793. Chandra observations of rim.
ADS
- Wilson & Batrla 2005, A&A, 430, 561. Observational constraints on dust.
ADS
- Krause et al. 2005, Science, 308, 1604. Spitzer light echoes from surroundings.
ADS
- Fesen et al. 2006, ApJ, 636, 848. Optical and IR limits for central sources.
ADS
- Laming et al. 2006, ApJ, 644, 260. Chandra observations, particularly of NE `jet'.
ADS
- Fesen et al. 2006, ApJ, 645, 283. HST observations for expansion studies.
ADS
- Renaud et al. 2006, ApJ, 647, L41. γ-ray line observations.
ADS
- Lazendic et al. 2006, ApJ, 651, 250. Chandra spectroscopy of bright knots.
ADS
- Ennis et al. 2006, ApJ, 652, 376. Spitzer observations.
ADS
- Kang & Koo 2007, ApJS, 173, 85. SGPS of high velocity HI.
ADS
- Albert et al. 2007, A&A, 474, 937. γ-ray observations.
ADS
- Rho et al. 2008, ApJ, 673, 271. Spitzer observations.
ADS
- Uchiyama & Aharonian 2008, ApJ, 677, L105. X-ray variability of compact features.
ADS
- Rest et al. 2008, ApJ, 681, L81. SN light echo.
ADS
- Hammell & Fesen 2008, ApJS, 179, 195. HST of outer knots.
ADS
- Krause et al. 2008, Science, 320, 1195. SN light echo spectrum.
ADS
- Hurley-Walker et al. 2009, MNRAS, 396, 365. Radio observations at 14 to 18 GHz.
ADS
- Helmboldt & Kassim 2009, AJ, 138, 838. Low radio frequency temporal variations.
ADS
- Smith et al. 2009, ApJ, 693, 713. Spitzer observations.
ADS
- Patnaude & Fesen 2009, ApJ, 697, 535. X-ray proper motions.
ADS
- Pavlov & Luna 2009, ApJ, 703, 910. Chandra observations of central source.
ADS
- Barlow et al. 2010, A&A, 518, L138. Herschel observations.
ADS
- Abdo et al. 2010, ApJ, 710, L92. Fermi observations.
ADS
- Acciari et al. 2010, ApJ, 714, 163. γ-ray observations.
ADS
- Sibthorpe et al. 2010, ApJ, 719, 1553. Akari and sub-mm observations of region.
ADS
- DeLaney et al. 2010, ApJ, 725, 2038. Spitzer and Chandra observations for 3-D structure.
ADS
- Patnaude et al. 2011, ApJ, 729, L28. Chandra observations of fading.
ADS
- Rest et al. 2011, ApJ, 732, 3. SN light echo observations.
ADS
- Fesen et al. 2011, ApJ, 736, 109. HST variability studies.
ADS
- Besel & Krause 2012, A&A, 541, L3. IR light echoes.
ADS
- Hwang & Laming 2012, ApJ, 746, 130. Chandra observations.
ADS
- Rho et al. 2012, ApJ, 747, L6. Akari CO observations.
ADS
- Vogt et al. 2012, ApJ, 750, 155. Spitzer light echoes.
ADS
- Isenne et al. 2012, ApJ, 757, 126. Spitzer spectroscopy.
ADS
- Asgekar et al. 2013, A&A, 551, L11. LOFAR of carbon recombination lines.
ADS
- Yang et al. 2013, ApJ, 766, 44. Suzaku spectroscopy.
ADS
- Rutherford et al. 2013, ApJ, 769, 64. Chandra spectroscopy.
ADS
- Milisavljevic & Fesen 2013, ApJ, 772, 134. Optical spectroscopy for 3-D structure.
ADS
- Koo et al. 2013, Science, 342, 1346. IR spectroscopy.
ADS
- Willström et al. 2013, A&A, 558, L2. CO observations.
ADS
- DeLaney et al. 2014, ApJ, 785, 7. VLA plus Pie Town at 74 MHz (9'') and comparison with higher frequencies.
ADS
- Arendt et al. 2014, ApJ, 786, 55. Spitzer and Herschel IR observations.
ADS
- Patnaude & Fesen 2014, ApJ, 789, 138. Multi-epoch optical and X-ray observations.
ADS
- Lee et al. 2014, ApJ, 789, 7. Spitzer and CO observations.
ADS
- Vinyaikin 2014, ARep, 58, 626. Time evolution of radio emission.
ADS
- Alarie et al. 2014, MNRAS, 441, 2996. Optical imaging/spectroscopy, including distance from expansion.
ADS
- Grefenstette et al. 2014, Nature, 506, 339. NuSTAR 44Ti observations.
ADS
- Siegart et al. 2015, A&A, 579, A124. INTEGRAL observations.
ADS
- Grefenstette et al. 2015, ApJ, 802, 15. NuSTAR observations.
ADS
- Lee et al. 2015, ApJ, 808, 98. WISE, Spitzer and other IR observations.
ADS
- Gorbynov et al. 2015, OAP, 28, 224. Time evolution of radio emission.
ADS
- Milisavljevic & Fesen 2015, Science, 347, 526. Near-IR observations.
ADS
- Arnaud et al. 2016, A&A, 586, A134. Planck flux densities at 7 frequencies between 30 and 353 GHz.
ADS
- Kilpatrick et al. 2016, ApJ, 816, 1. CO observations, including broad lines.
ADS
- Fesen & Milisavljevic 2016, ApJ, 818, 17. HST [SIII] and [SII] observations.
ADS
- Koo et al. 2016, ApJ, 821, 20. Spitzer and Herschel flux densities (and comparison with X-ray properties).
ADS
- Wang & Li 2016, ApJ, 825, 102. INTEGRAL observations.
ADS
- Acero et al. 2016, ApJS, 224, 8. γ-ray observations.
ADS
Last updated: 16 Jun 2017
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