Crab Nebula

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Crab Nebula
Crab Nebula.jpg
Hubble Space Telescope photograph (2005)
Observation data: J2000.0 epoch
Type Supernova remnant
Richt ascension 05h 34m 31.94s[1]
Declination +22° 00′ 52.2″[1]
Distance 6.5 ± 1.6 kly (2.0 ± 0.5 kpc)[2]
Apparent magnitude (V) +8.4
Apparent dimensions (V) 420″ × 290″[3][a]
Constellation Taurus
Pheesical characteristics
Radius ~5.5 licht year (~1.7 pc) [4]
Absolute magnitude (V) −3.1 ± 0.5[b]
Notable featurs Optical pulsar
Ither designations Messier 1,[1] NGC 1952,[1] Sharpless 244
See also: Diffuse nebula, Leets o nebulae

The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant an pulsar wind nebula in the constellation o Taurus.[5] Correspondin tae a bright supernova recordit bi Cheenese astronomers in 1054, the nebula wis observed later bi Inglis astronomer John Bevis in 1731. At an apparent magnitude o 8.4, comparable tae that o the lairgest muin o Saturn, it is nae veesible tae the naked ee but can be made oot uisin binoculars unner favourable condeetions.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 1.3 "SIMBAD Astronomical Database". Results for NGC 1952. Retrieved February 12, 2012. 
  2. Kaplan, D. L.; Chatterjee, S.; Gaensler, B. M.; Anderson, J. (2008). "A Precise Proper Motion for the Crab Pulsar, and the Difficulty of Testing Spin-Kick Alignment for Young Neutron Stars". Astrophysical Journal 677 (2): 1201. arXiv:0801.1142. Bibcode:2008ApJ...677.1201K. doi:10.1086/529026. 
  3. Trimble, Virginia Louise (1973). "The Distance to the Crab Nebula and NP 0532". Publications of the Astronomical Society of the Pacific 85 (507): 579. Bibcode:1973PASP...85..579T. doi:10.1086/129507. 
  4. Hester, J. J. (2008). "The Crab Nebula: An Astrophysical Chimera". Annual Review of Astronomy and Astrophysics 46: 127–155. doi:10.1146/annurev.astro.45.051806.110608.  edit
  5. an nae, as its name micht suggest, in Cancer. The nou-current name is due tae William Parsons, 3rd Earl o Rosse who observed the object in 1840 uisin a 36-inch telescope an produced a drawin that leuked somewhit lik a crab. The drawin wis published in Observations on Some of the Nebulae, Philosophical Transactions of the Royal Society of London vol. 134 (1844), fig. 81 (plate xviii, p. 321)