Cosmic genesis physical laws drive the formation of structure in the universe
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Cosmic genesis Physical Laws Drive the Formation of Structure in the Universe. Fred C. Adams Physics Department, University of Michigan. SATURDAY MORNING PHYSICS. How did we get here?. Four Forces of Nature. Strong. Gravity. Weak. Electromagnetism. Classical (19th century) Physics.

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Cosmic genesis Physical Laws Drive the Formation of Structure in the Universe

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Cosmic genesis Physical Laws Drive the Formation of Structure in the Universe

Fred C. Adams

Physics Department, University of Michigan

SATURDAY MORNING PHYSICS


How did we get here?


Four Forces of Nature

Strong

Gravity

Weak

Electromagnetism


Classical (19th century) Physics

Quantum Mechanics

Relativity

Chaos

Our Universe


Cosmic Timeline

(uchicago.edu)


GSWE


The Inflationary Universe

(Guth/Wudka)

(G vs G)

Time in seconds


Matter > Antimatter

S vs G

(members.aol.com)


time t < 1 second:

Dark Matter Freezes Out

Dark matter abundance freezes

before the universe is 1 second old

W vs G


The synthesis of light elements begins

when the universe is one second old

S vs E vs G

(physics.uoregon.edu)


Helium

Deuterium

Lithium

(Schramm)


COBE Blackbody

T = 2.723 Kelvin

Intensity

frequency

E


WMAP:Cosmic Background Radiation

E vs G


G

The VIRGO consortium


Andromeda: Our sister galaxy


Cosmological Parameters


Fates of the Universe


Fates of the Universe

Accelerating

G


14 Gyr

54 Gyr

Island

Universe

92 Gyr

Busha, Adams, Evrard,

and Wechsler 2003


Every galaxy has a

supermassive

black hole

anchoring its center

Mbh = millions to

billions of Suns

Gravity wins!

G

(astro.cf.ac.uk)


Every galaxy

produces about

one million

stellar mass

black holes

(Gravity wins again)

G

(life-enhancement.com)


EM radiation


Stars are still forming today

The Eagle Nebula

(Hester et al.)


Orion


The Stages of

Star Formation

Gravity

vs

Pressure


C

Luminosity

B

A

Spectral Class

(Faulkes)


The fifty (50)

nearest stars

Our Sun is the

fourth largest!


The Periodic Table of Elements

S,W

(aether.lbl.edu)


S,W vs E


Late Nuclear Burning Stages of a Massive Star - just before IGNITION

G,E,S,W

(Faulkes)


Distribution of Stellar Masses

Stars that explode

Stars that

become

white dwarfs

Brown dwarfs


  • Galaxy continues to

  • make new stars.

  • Time scales are

  • lengthened by:

  • Recycling

  • Infall onto disk

  • Reduced SF rate


Star formation continues

until the galaxy runs out of gas

(trillions of years from now)

The smallest, longest lived stars

last for tens of trillions of years


Star formation continues

until the galaxy runs out of gas

(trillions of years from now)

The smallest, longest lived stars

last for tens of trillions of years

Our universe is young:

Only one tenth of one percent

of the Stelliferous Era has

taken place so far!


Extrasolar Planets!

California planet search


California planet search


Planets form out of circumstellar disks

G. Bryden

G,E


Comets can carry water to

newborn terrestrial planets


But most water for Earth probably

came from hydrogenated rocks


Galilean Satellites:

Icy worlds are easy to make

Ganymede Callisto Io Europa


E


Our universe seems to have just the

right version of the laws of physics

so thatLIFE CAN EMERGE


Our universe seems to have just the

right version of the laws of physics

so thatLIFE CAN EMERGE

WHY?


G’S’W’E’

GSWE


Here and Now


For further reading:

  • Five Ages of the Universe: Inside the physics of eternity, Fred Adams & Greg Laughlin, 1999

  • Origins of Existence: How life emerged in the universe, Fred Adams, 2002


Hawking Radiation

Virtual particles

Black

hole


Earth swallowed by the Sun


Red Dwarf saves Earth

moon

red dwarf

sun

earth


Red dwarf captures the Earth

Sun exits with one red dwarf

as a binary companion

9000 year

interaction

Earth exits with the

other red dwarf

Sun and Earth encounter

binary pair of red dwarfs


Primordial Era

  • The Big Bang

  • Inflation

  • Matter > Antimatter

  • Quarks -> protons, neutrons

  • Nuclear synthesis of the light elements

  • Cosmic Microwave Background

  • Universe continues to expand


Four Stages of Star Formation:

G vs P


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