• Thumbnail for 2dF Galaxy Redshift Survey
    In astronomy, the 2dF Galaxy Redshift Survey (Two-degree-Field Galaxy Redshift Survey), 2dF or 2dFGRS is a redshift survey conducted by the Australian...
    6 KB (718 words) - 20:15, 15 March 2025
  • Thumbnail for Redshift survey
    In astronomy, a redshift survey is a survey of a section of the sky to measure the redshift of astronomical objects: usually galaxies, but sometimes other...
    9 KB (996 words) - 02:40, 23 October 2024
  • Thumbnail for Baryon acoustic oscillations
    Bubble of Galaxies, Astounds Astronomers". Scientific American. Retrieved 2023-09-28. Cole, S.; et al. (2005). "The 2dF Galaxy Redshift Survey: Power-spectrum...
    27 KB (3,238 words) - 10:48, 30 May 2025
  • Thumbnail for Dark matter
    discovered in 2005, in two large galaxy redshift surveys, the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Combining the CMB observations...
    138 KB (15,043 words) - 23:06, 22 May 2025
  • Thumbnail for 6dF Galaxy Survey
    third largest redshift survey next to the Sloan Digital Sky Survey (SDSS) and the 2dF Galaxy Redshift Survey (2dFGRS). The 6dF survey covers 17,000 deg2...
    5 KB (634 words) - 02:47, 18 March 2025
  • Thumbnail for Redshift
    first redshift survey was the CfA Redshift Survey, started in 1977 with the initial data collection completed in 1982. More recently, the 2dF Galaxy Redshift...
    87 KB (9,212 words) - 08:08, 31 May 2025
  • Thumbnail for Observational cosmology
    website for more details. Shaun Cole; et al. (The 2dFGRS Collaboration) (2005). "The 2dF galaxy redshift survey: Power-spectrum analysis of the final dataset...
    22 KB (4,321 words) - 20:54, 24 May 2025
  • Thumbnail for Observable universe
    Logarithmic Maps of the Universe List of publications of the 2dF Galaxy Redshift Survey The Universe Within 14 Billion Light Years – NASA Atlas of the...
    64 KB (6,596 words) - 02:11, 2 June 2025
  • Thumbnail for Lambda-CDM model
    density to be close to 100% of critical, whereas in 2001 the 2dFGRS galaxy redshift survey measured the matter density to be near 25%; the large difference...
    93 KB (10,930 words) - 06:34, 2 June 2025
  • Thumbnail for Physical cosmology
    spectrum. This is the approach of the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey. Another tool for understanding structure formation is...
    77 KB (7,679 words) - 07:19, 2 June 2025
  • Thumbnail for Redshift-space distortions
    Redshift-space distortions are an effect in observational cosmology where the spatial distribution of galaxies appears squashed and distorted when their...
    6 KB (778 words) - 10:13, 9 January 2025
  • Thumbnail for Decoupling (cosmology)
    recombination, which occurred about 378,000 years after the Big Bang (at a redshift of z = 1100), when the universe was a hot opaque ("foggy") plasma. During...
    9 KB (1,129 words) - 02:26, 20 May 2025
  • Thumbnail for Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure
    1995 – Hubble Deep Field survey of galaxies in field 144 arc seconds across. 1998 – The 2dF Galaxy Redshift Survey maps the large-scale structure in a...
    32 KB (3,485 words) - 20:34, 26 May 2025
  • Thumbnail for Galaxy filament
    forming filaments and voids Map of nearest walls, voids and superclusters 2dF survey map, containing the SDSS Great Wall 2MASS XSC infrared sky map A mosaic...
    23 KB (1,880 words) - 03:58, 25 May 2025
  • Thumbnail for Non-standard cosmology
    aftermath of which the Milky Way's status as but one of the Universe's many galaxies was established. From the 1940s to the 1960s, the astrophysical community...
    35 KB (4,535 words) - 02:19, 8 April 2025
  • Thumbnail for Sachs–Wolfe effect
    degrees. The non-integrated Sachs–Wolfe effect is caused by gravitational redshift occurring at the surface of last scattering. The effect is not constant...
    8 KB (994 words) - 21:13, 22 August 2024
  • Catalogue published 1998 — Sloan Digital Sky Survey commences 2003 — 2dF Galaxy Redshift Survey published; 2MASS completes 2012 — On March 14, 2012, a new atlas...
    10 KB (1,100 words) - 00:37, 29 December 2024
  • Thumbnail for Dark energy
    density is close to 100% of critical density. Then in 2001, the 2dF Galaxy Redshift Survey gave strong evidence that the matter density is around 30% of...
    88 KB (9,945 words) - 05:12, 24 May 2025
  • Thumbnail for Void (astronomy)
    Price, I. A.; Seaborne, M.; Taylor, K. (2001). "The 2dF Galaxy Redshift Survey: Spectra and redshifts". Monthly Notices of the Royal Astronomical Society...
    37 KB (4,463 words) - 23:56, 19 March 2025
  • now-standard Lambda CDM model. He was one of the originators of the 2dF Galaxy Redshift Survey, and provided confirmation of dark energy using measurements of...
    12 KB (1,037 words) - 17:18, 31 May 2025
  • Thumbnail for Galaxy formation and evolution
    James E. (1 January 2003). "The Broadband Optical Properties of Galaxies with Redshifts 0.02 < z < 0.22". The Astrophysical Journal. 594 (1): 186. arXiv:astro-ph/0209479...
    46 KB (5,624 words) - 04:13, 13 May 2025
  • are prominent features in the survey. 2dF Galaxy Redshift Survey Sloan Digital Sky Survey "The Las Campanas Redshift Survey". qold.astro.utoronto.ca. Archived...
    3 KB (365 words) - 22:30, 15 March 2025
  • Thumbnail for Australian Astronomical Observatory
    capabilities. The 2dF Galaxy Redshift Survey (2dFGRS) used the 2dF instrument to obtain spectra and redshifts for ~250000 galaxies brighter than B~19...
    14 KB (1,826 words) - 22:05, 6 April 2025
  • Thumbnail for Dark Energy Survey
    Alarcon, A. (2018-07-21). "Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies". Monthly Notices of the Royal Astronomical...
    50 KB (5,465 words) - 12:44, 6 May 2025
  • Thumbnail for Sloan Digital Sky Survey
    The Sloan Digital Sky Survey or SDSS is a major multi-spectral imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope...
    34 KB (3,953 words) - 21:33, 24 April 2025
  • Thumbnail for Big Bang
    gravity aided by dark matter, forming early stars and galaxies. Measurements of the redshifts of supernovae indicate that the expansion of the universe...
    150 KB (15,950 words) - 03:45, 2 June 2025
  • Thumbnail for Hubble's law
    Hubble's law (redirect from Hubble redshift)
    away. A galaxy's recessional velocity is typically determined by measuring its redshift, a shift in the frequency of light emitted by the galaxy. The discovery...
    132 KB (13,177 words) - 03:49, 2 June 2025
  • Thumbnail for Recombination (cosmology)
    atoms. Recombination occurred about 378000 years after the Big Bang (at a redshift of z = 1100). The word "recombination" is misleading, since the Big Bang...
    20 KB (2,744 words) - 15:33, 18 March 2025
  • Thumbnail for Dark fluid
    f(K+R) model that suggests interesting corrections to MOND that depend on redshift and density. Dark fluid is not analyzed like a standard fluid mechanics...
    6 KB (779 words) - 14:45, 15 January 2025
  • Thumbnail for Discovery of cosmic microwave background radiation
    should be detectable, albeit as microwaves, due to a massive redshift. When his friend Bernard F. Burke, a professor of physics at MIT, told Penzias about...
    14 KB (1,511 words) - 19:02, 24 May 2025