Local Void

Not to be confused with Local Hole.

Local Void
Map of voids and superclusters within 500 million light years from Milky Way. The Local Void in the yellow circle.
Object typeVoid Edit this on Wikidata
Observation data
(Epoch J2000.0[1])
ConstellationHercules Edit this on Wikidata
18h 38m [1]
Declination+18.0°[1]
In visual light (V)
Size
60 Mpc (200 Mly)[2]
[edit on Wikidata]

The Local Void is a vast, empty region of space, lying adjacent to the Local Group.[3][4] Discovered by Brent Tully and Rick Fisher in 1987,[5] the Local Void is now known to be composed of three separate sectors, separated by bridges of "wispy filaments".[4] The precise extent of the void is unknown, but it is at least 45 Mpc (150 million light-years) across,[6] and possibly 150 to 300 Mpc.[7][8] The Local Void appears to have significantly fewer galaxies than expected from standard cosmology.[9]

  1. ^ a b c "NAME Local Void". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 December 2014.
  2. ^ Nakanishi, Kouichiro; et al. (1 October 1997). "Search and Redshift Survey for IRAS Galaxies behind the Milky Way and Structure of the Local Void". The Astrophysical Journal Supplement Series. 112 (2): 245. Bibcode:1997ApJS..112..245N. doi:10.1086/313039.
  3. ^ Shiga, David (1 June 2007). "Dwarf-flinging void is larger than thought". New Scientist. Archived from the original on 26 August 2018. Retrieved 13 October 2008.
  4. ^ a b Tully, R. Brent; et al. (20 March 2008). "Our Peculiar Motion Away from the Local Void". The Astrophysical Journal. 676 (1): 184–205. arXiv:0705.4139. Bibcode:2008ApJ...676..184T. doi:10.1086/527428.
  5. ^ Tully, R. Brent; Fisher, J. Richard (1987). Nearby Galaxy Atlas. Cambridge University Press. Bibcode:1987nga..book.....T.
  6. ^ "Milky Way moving away from void". Astronomy. 12 June 2007. Archived from the original on 8 June 2011. Retrieved 13 October 2008.
  7. ^ Whitbourn, Joe R.; Shanks, Tom (June 2016). "The galaxy luminosity function and the Local Hole". Monthly Notices of the Royal Astronomical Society. 459 (1): 496. arXiv:1603.02322. Bibcode:2016MNRAS.459..496W. doi:10.1093/mnras/stw555.
  8. ^ Keenan, Ryan C.; Barger, Amy J.; Cowie, Lennox L. (5 September 2013). "Evidence for a ~300 Mpc Scale Under-density in the Local Galaxy Distribution". The Astrophysical Journal. 775 (1): 62. arXiv:1304.2884. Bibcode:2013ApJ...775...62K. doi:10.1088/0004-637X/775/1/62.
  9. ^ Peebles, P. J. E.; Nusser, Adi (June 2010). "Nearby galaxies as pointers to a better theory of cosmic evolution". Nature. 465 (7298): 565–569. arXiv:1001.1484. Bibcode:2010Natur.465..565P. doi:10.1038/nature09101. PMID 20520705. S2CID 43767061.