PHYS 190 Lecture Notes - Big Bang Nucleosynthesis, Cosmological Constant, Accelerating Expansion Of The Universe
30 Apr 2018
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We#find#a#dark#matter#wed,#"echoing"#the#CMB
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Every#point#is#an#entire#galaxy,#not#a#star
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Whole#celestial# sphere#spread#out#flat
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2Mass#Survey:#2#Micron#(ex.#Infrared)#All#Sky#Survey
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1.6#million#galaxies:#blue#closest,#red#furthest#(about#1#billion#light#years)
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Voids#‐regions#that#are#empty
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Walls#‐
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Filaments‐
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Milky#way:#disregard#‐black#middle#space#
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But#only#if#matter#is#mostly#dark and#cold (ex.#Slow#moving)
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Stimulations#starting#with#measured#CMB#anisotropy#show#that#primordial#
"ripples"#in#matter#density#would#turn#into#today's#galaxy#"networks"
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"TODAY'S"#LARGE‐SCALE#STRUCTURE
Life#begins#to#evolve
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BY#=#APPROX.#10#BILLION#YEARS
Intelligent#life#begins#to#explore#the#cosmos
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BY#=#APPROX.#14#BILLION#YEARS
Universe#was#mostly#hydrogen#and#helium
Trace#the#hubble#expansion#back#in#time
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Some#point#the#radiaiton#comes#out#and#tells#us#that#there#is#an#imprint
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Hubble#expansion
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Cosmic#microwave#background
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Big#bang#nucleosynthesis
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Weird#regions/galaxies
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With#the#baby#picture,#you#can#get#the#large‐scale#structure
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Large‐scale#structure
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BIG#BANG:#TOP#4#REASONS#
WEEK$14$LECTURE$1
Tuesday,# April#3,#2018
2:31#PM
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