The History of the Universe in One Hour Max Tegmark, MIT
QuickTime and a TIFF (Uncompressed) decompressor are needed to see this picture. Other people associated with MIT who worked on COBE: Chuck Bennett, Ed Cheng, Steve Meyer, Rai Weiss & Ned Wright
OUR PLACE IN SPACE Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
DSE
SDSS movie from MW
OUR PLACE IN TIME Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
The sky as a time machine
Figure from WMAP team
(Figure from Wayne Hu) (Figure from WMAP team)
Foreground-cleaned WMAP map from Tegmark, de Oliveira-Costa & Hamilton, astro-ph/0302496 CMB Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Fluctuation generator Brief History of our Universe Fluctuation amplifier 400 (Graphics from Gary Hinshaw/WMAP team)
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 Formation movies
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Galaxy surveys Microwave background Supernovae Ia THE COSMIC SMÖRGÅSBORD Gravitational lensing Big Bang nucleosynthesis Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 Galaxy clusters Lyman forest Neutral hydrogen tomography
Foreground-cleaned WMAP map from Tegmark, de Oliveira-Costa & Hamilton, astro-ph/0302496 CMB Our observable universe Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
LSS Our observable universe
Springel, Frenk & White 2006, Nature, 440, 11
Measuring cosmological parameters
What s the matter? 75% 4% 21%
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 How flat is space?
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 How flat is space?
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 How flat is space? Somewhat.
How flat is space? tot =1.003 Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
386 430 13.8
Q: Is there more that exists than we can see? Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 Cosmology suggests yes!
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 How big is our Universe?
Foreground-cleaned WMAP map from Tegmark, de Oliveira-Costa & Hamilton, astro-ph/0302496
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
PHYSICS OR PHILOSOPHY? Q: Are theories which predict the existence of unobservable parallel universes untestable? A: No, as long as they also make predictions for things we can observe. Example 1: GR predicts black hole interiors? infinite Example 2: Inflation predicts space Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Cosmological data Cosmological Parameters 75% 4% 21%
Cosmological data Cosmological Parameters 75% 4% 21% Why these particular values? Fundamental theory? Nature of dark matter? Nature of dark energy? Nature of early Universe? Map our universe!
Galaxy surveys Microwave background Supernovae Ia Gravitational lensing What s the next big thing in cosmology? Big Bang nucleosynthesis Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 Galaxy clusters Lyman forest Neutral hydrogen tomography
Foreground-cleaned WMAP map from Tegmark, de Oliveira-Costa & Hamilton, astro-ph/0302496 CMB Our observable universe Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
LSS Our observable universe
The time frontier LSS
The Omniscope MT & Matias Zaldarriaga, arxiv:0805.4414, 0909.0001
How get huge sensitivity at low cost? Sensitivity T (A ) -1/2 Single-dish telescope: cost A 1.35 Interferometer: cost N 2 A 2 FFT telescope idea: cost A, ~2 Telescopes as Fourier transformers
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 QuickTime and a decompressor are needed to see this picture.
Where are we now? Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Foreground modeling 0802.1525 Foreground removal astro-ph/0501081, 0807.3952, 0903.4890 Optimal mapmaking 0909.0001 Automatic calibration 1001.5268 Faster correlation 0805.4414, 0909.0001 Corner turning 0910.1351 Survey design optimization 0802.1710
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 Eben Kunz
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
Where are we going? Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010
The sensitivity frontier FFTT Max Tegmark Dept. of Physics, MIT tegmark@mit.edu Amateur Astronomer Assoc. NY, October 1, 2010 Tegmark & Zaldarriaga 2008
LSS Our observable universe
Our observable universe LSS Spatial curvature: WMAP+SDSS: tot = 0.01 Planck: tot = 0.003 21cm: tot =0.0002 Mao, MT, McQuinn, Zahn & Zaldarriaga 2008