the history of the universe in one hour - insight cruisesthe history of the universe in one hour max...
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The History of the Universe in One Hour
Max Tegmark, MIT
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Max Tegmark Dept. of Physics, MIT
[email protected] Bright Horizons Cruise
May 30, 2010
OUR PLACE IN SPACE
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GE Zoomout
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DSE
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SDSS movie
from MW
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Max Tegmark Dept. of Physics, MIT
[email protected] Bright Horizons Cruise
May 30, 2010
OUR PLACE IN TIME
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The
sky
as a
tim
e m
achi
ne
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Fluctuation generator
Fluctuation amplifier
(Graphics from Gary Hinshaw/WMAP team)
Brief History of our Universe
400
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100dpi
Figu
re fr
om W
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P te
am
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Max Tegmark Dept. of Physics, MIT
[email protected] Bright Horizons Cruise
May 30, 2010
Formation movies
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Max Tegmark Dept. of Physics, MIT
[email protected] Bright Horizons Cruise
May 30, 2010
Smorga THE COSMIC SMÖRGÅSBORD
Galaxy surveys
Microwave background
Gravitational lensing
Big Bang nucleosynthesis
Supernovae Ia
Galaxy clusters
Lyman α forest
Neutral hydrogen tomography
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Evidence for Big Bang:
Evidence for what, exactly? Our entire observable universe was once as hot as the core of the Sun, doubling its size in a under a second.
• Observed galaxy recession (Hubble’s law)
• Existence of CMB
• Correct predictions of big bang nucleosynthesis
• Darkness of night sky! (Olber)
• Distant objects look younger
• Not evidence for a singularity
Plenty enough bang for most people to call “big”…
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EVIDENCE: The Universe is
expanding! v=Hr
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Alexander Friedmann 1888-1925
(Russian; 1922 paper)
George Lemaître 1894-1936 (Belgian; indep. 1927 paper)
Arthur Geoffrey Walker 1909-?
(British; 1935 paper with H P Robertson showed that FLRW
metric is only homogeneous & isotropic metric)
MIT PhD!
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Edwin Hubble 1889- (American; 1930 paper)
Mt. Wilson Observatory 1931
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Hubble 1929:
H≈550 km/s/Mpc
Riess et al 1996:
H≈70 km/s/Mpc
How measure distance & redshift?
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EVIDENCE: The Cosmic Microwave Background Radiation
exists
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Arno Penzias & Robert Wilson 1965
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Arno Penzias 2005
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History
(Figure from Wayne Hu)
(Figure from WMAP team)
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History
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Max Tegmark Dept. of Physics, MIT
[email protected] Bright Horizons Cruise
May 30, 2010
History
CMB Fo
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Max Tegmark Dept. of Physics, MIT
[email protected] Bright Horizons Cruise
May 30, 2010
De Bernardis et al 2000, Lange et al 2000
CMB
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Max Tegmark Dept. of Physics, MIT
[email protected] Bright Horizons Cruise
May 30, 2010
Tegmark, Jr., 2001
CMB
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100dpi
Other people associated with MIT who worked on COBE: Chuck Bennett, Ed Cheng, Steve Meyer, Rai Weiss & Ned Wright