The Cosmic Shopping List
The Cosmic Shopping List
The Cosmic Shopping List
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<strong>The</strong> <strong>Cosmic</strong> <strong>Shopping</strong><br />
<strong>List</strong><br />
David Marsh<br />
Renée Hlozek
How do we understand nature on the<br />
smallest scales – inside atoms<br />
How do we understand the Universe on the<br />
largest scales, much larger than galaxies<br />
Are there links between them
<strong>Cosmic</strong> Timeline<br />
Timescales<br />
you have<br />
just seen!<br />
We are<br />
here!<br />
NASA/WMAP
Ingredients<br />
!
<strong>The</strong> Forces of Nature<br />
• Gravity is a<br />
fundamental force of<br />
nature<br />
• Einstein: GR relates<br />
gravity to the physics<br />
of space itself.<br />
• Space has a SHAPE
<strong>The</strong> Standard Model<br />
• Particles that make up<br />
atoms<br />
• Forces act on specific<br />
particles<br />
• Quantum Mechanical
<strong>The</strong> <strong>Cosmic</strong> Fireball
~ 10 -15 m
<strong>Cosmic</strong> Cooking<br />
Herman<br />
Gamow<br />
Alpher
Evidence for the Big Bang<br />
Penzias and Wilson<br />
Smoot and Mather<br />
Relic radiation left over from the<br />
Big Bang discovered in 1964
<strong>Cosmic</strong> Ripples in the spectrum…<br />
... lead to BIG problems!<br />
How can we solve then
Inflation<br />
• Inflation makes the<br />
universe flat.<br />
• Predicts the specific<br />
shape of ripples in<br />
the CMB.<br />
• Must be caused by<br />
something strange.
Ingredients<br />
!<br />
"<br />
What<br />
is the<br />
inflaton
NASA/WMAP
Structure in the<br />
Universe<br />
We<br />
are<br />
here!<br />
Hubble Ultra<br />
Deep Field
<strong>Cosmic</strong> Constituents<br />
Distant galaxies<br />
http://www.hetdex.org<br />
e.g. We are here
Hubble Image<br />
Abell1689
<strong>The</strong>ories of Dark Matter<br />
• Dark matter must<br />
interact weakly so we<br />
don’t see it.<br />
• Lots of theories: a<br />
playground of<br />
predictions that must<br />
match the data.<br />
• Can help answer<br />
other questions.
Searching for Dark Matter
Searching for Dark Matter
Ingredients<br />
!<br />
"<br />
What<br />
is the<br />
inflaton<br />
What is the<br />
dark matter
NASA/WMAP
<strong>Cosmic</strong> Acceleration<br />
Hubble Space<br />
Telescope<br />
image
A Dark Analogy
A Dark Analogy<br />
DARK<br />
ENERGY
Big Rip!<br />
Eternal<br />
expansion<br />
Big Crunch
How do we measure the cosmos<br />
Herschel<br />
WIGGLEZ<br />
Euclid<br />
WMAP<br />
JWST
<strong>The</strong> <strong>Cosmic</strong> Melting<br />
Pot<br />
!<br />
What is<br />
Lambda<br />
"<br />
What is the<br />
inflaton<br />
What is the<br />
dark matter
Questions
![Extended Notes 8 [pdf]](https://img.yumpu.com/50123548/1/190x245/extended-notes-8-pdf.jpg?quality=85)
![Handout 3 [pdf] - University of Oxford Department of Physics](https://img.yumpu.com/46475432/1/190x245/handout-3-pdf-university-of-oxford-department-of-physics.jpg?quality=85)
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