Abell 2744

Abell 2744, nicknamed Pandora's Cluster, is a giant galaxy cluster resulting from the simultaneous pile-up of at least four separate, smaller galaxy clusters that took place over a span of 350 million years, and is located approximately 4 billion light years from Earth.[1] The galaxies in the cluster make up less than five percent of its mass.[1] The gas (around 20 percent) is so hot that it shines only in X-rays.[1] Dark matter makes up around 75 percent of the cluster's mass.[1]

This cluster also shows a radio halo along with several other Abell clusters. It has a strong central halo, along with an extended tail, which could either be relic radiation, or an extension of the central halo.[4]

Renato Dupke, a member of the team that discovered the Cluster, explained the origin of the name in an interview: "We nicknamed it ‘Pandora's Cluster’ because so many different and strange phenomena were unleashed by the collision."[5]

See also

References

  1. ^ a b c d e f "Pandora's Cluster – Clash of the Titans". NASA.
  2. ^ a b Abell, George O.; Corwin, Harold G. Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies" (PDF). Astrophysical Journal Supplement Series. 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. doi:10.1086/191333. ISSN 0067-0049. Retrieved 13 March 2012.
  3. ^ a b c "NED results for object ABELL 2744". NASA/IPAC Extragalactic Database (NED). Retrieved 17 March 2012.
  4. ^ Govoni, F.; Ensslin, T. A.; Feretti, L.; Giovannini, G. (23 January 2001). "A Comparison of Radio and X-Ray Morphologies of Four Clusters of Galaxies Containing Radio Halos". Astronomy & Astrophysics. 369 (2): 441–449. arXiv:astro-ph/0101418. Bibcode:2001A&A...369..441G. doi:10.1051/0004-6361:20010115. S2CID 18507943.
  5. ^ Renato Dupke quoted at Pandora's Cluster – a galactic crash investigation Press release of 22 June 2011
  6. ^ "Swimming in Sculptor". Retrieved 7 March 2016.
  7. ^ "Hubble sees ghost light from dead galaxies in galaxy cluster Abell 2744". www.spacetelescope.org. ESA/Hubble. Retrieved 4 November 2014.
  8. ^ Clavin, Whitney; Jenkins, Ann; Villard, Ray (7 January 2014). "NASA's Hubble and Spitzer Team up to Probe Faraway Galaxies". NASA. Retrieved 8 January 2014.
  9. ^ Chou, Felecia; Weaver, Donna (16 October 2014). "RELEASE 14-283 – NASA's Hubble Finds Extremely Distant Galaxy through Cosmic Magnifying Glass". NASA. Retrieved 17 October 2014.
  10. ^ Ramsay, Leah; Pulliam, Christine. "NASA's Webb Uncovers New Details in Pandora's Cluster". Space Telescope Science Institute. NASA/ESA/CSA. Retrieved 15 February 2023.
  11. ^ "Webb Draws Back Curtain On Universe's Early Galaxies". October 18, 2023.