The History of the Universe in One HourHistory CMB Our observable universe d-a-o-/0302496. LSS Our...
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The History of the Universe in One Hour Max Tegmark, MIT
Transcript of The History of the Universe in One HourHistory CMB Our observable universe d-a-o-/0302496. LSS Our...
The History of the Universe in One Hour
Max Tegmark, MIT
QuickTime™ and aTIFF (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
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
OUR PLACE IN
SPACE
DSE
SDSS movie
from MW
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
OUR PLACE IN
TIME
Th
e sk
y a
s a
tim
e m
ach
ine
Fig
ure
fro
m W
MA
P t
eam
History
(Figure from Wayne Hu)
(Figure from WMAP team)
History
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
History
CMBF
ore
gro
und
-cle
aned
WM
AP
map
fro
m T
egm
ark,
de
Oliveir
a-C
ost
a &
Ham
ilto
n,
astr
o-p
h/0
302496
Fluctuation generator
Fluctuation amplifier
(Graphics from Gary Hinshaw/WMAP team)
Brief History of
our Universe
400
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Formation movies
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Smorga THE COSMIC
SMÖRGÅSBORD
Galaxy surveys
Microwave
background
Gravitational
lensingBig Bang
nucleosynthesis
Supernovae Ia
Galaxy clusters
Lyman forest
Neutral hydrogen
tomography
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
History
CMB
Our observable
universe
Fo
regro
und
-cle
aned
WM
AP
map
fro
m T
egm
ark,
de
Oliveir
a-C
ost
a &
Ham
ilto
n,
astr
o-p
h/0
302496
LSS
Our observable
universe
Sp
rin
gel
, F
renk &
Whit
e 2006,
Nat
ure
, 440,
11
Measuring
cosmological
parameters
What’s the matter?
4% 21%
75%
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Cmbgg
How flat is space?
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Cmbgg
How flat is space?
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Cmbgg
How flat is space? Somewhat.
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Cmbgg
tot=1.003How flat is space?
Cmbgg
430
386
13.8
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Q: Is there more that exists than we can see?
Cosmology suggests yes!
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
How big is our Universe?
Fo
regro
und
-cle
aned
WM
AP
map
fro
m T
egm
ark,
de
Oliveir
a-C
ost
a &
Ham
ilto
n,
astr
o-p
h/0
302496
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
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.
PHYSICS OR PHILOSOPHY?
Example 1:
GR predicts
black hole interiors
Example 2:
Inflation predicts
infinite space?
4%
75%
21%
Cosmological
data
Cosmological
Parameters
4%
75%
21%
Cosmological
data
Fundamental
theory ?
Cosmological
Parameters
Nature of dark matter?
Nature of dark energy?
Nature of early Universe?
Why these particular values?
Map our
universe!
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Smorga What’s the next
big thing in
cosmology?
Galaxy surveys
Microwave
background
Gravitational
lensingBig Bang
nucleosynthesis
Supernovae Ia
Galaxy clusters
Lyman forest
Neutral hydrogen
tomography
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
History
CMB
Our observable
universe
Fo
regro
und
-cle
aned
WM
AP
map
fro
m T
egm
ark,
de
Oliveir
a-C
ost
a &
Ham
ilto
n,
astr
o-p
h/0
302496
LSS
Our observable
universe
LSS
The time
frontier
The Omniscope
MT & Matias Zaldarriaga, arXiv:0805.4414, 0909.0001
Single-dish telescope:
cost A1.35
Sensitivity T (A)-1/2
Interferometer:
cost N2 A2FFT telescope idea:
cost A, ~2
Telescopes as Fourier transformers
How get huge sensitivity at low cost?
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
QuickTime™ and a decompressor
are needed to see this picture.
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Where are
we now?
• 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 TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010
Where are
we going?
Max TegmarkDept. of Physics, MIT
[email protected] Astronomer Assoc.
NY, October 1, 2010Tegmark & Zaldarriaga 2008
The
sensitivity
frontier
FFTT
LSS
Our observable
universe
LSS
Our observable
universe
Mao, MT,
McQuinn,
Zahn &
Zaldarriaga
2008
Spatial curvature:
WMAP+SDSS: tot= 0.01
Planck: tot= 0.003
21cm: tot=0.0002
