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Class Notes for Origins at McMaster University

ORIGINS 2B03 Lecture Notes - Fundamental Interaction, Exoplanet

Lecture 31Wednesday November 30 20111230 PMElementary a particle that has no inner structures cannot be subdividedQuarks and leptons are the elementary particles in physicsUp and down quarksprotons and neutrons and electro...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Centaurus A, Active Galactic Nucleus

Lecture 30Tuesday November 29 20111230 PMActive galaxiesBlack holesIf a supernova core is heavier than 3 solar masses then nothing in nature can stop gravity from winning once and for allStellar at the end of a mass stars ...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Cartwheel Galaxy, Bullet Cluster, Dark Energy

Lecture 28Wednesday November 23 20111230 PMDark energyThe distance using Hubbles law and standard candles disagree with each other due to universes accelerationThe 1 priority to understand what dark energy isIs it constant...

Origins
ORIGINS 2B03
Laura Parker
Lecture 29

Lecture 29Tuesday November 22 2011142 PMStructure in the universeStarsStar clusters 100s to millions of starsGalaxies million to server hundred billion starsGalaxy clusters 10s to 1000s of galaxiesSuperclusters walls and v...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Wilkinson Microwave Anisotropy Probe

Lecture 27Wednesday November 16 20111230 PMThe threshold density doesnt add up to 100 meaning we will expand foreverIn WMAP we see we are at the threshold densityWe have an extra component thats just extra energy which mak...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Observable Universe, False Vacuum, Neutrino

Lecture 24Friday December 09 20111230 PMEvidence for big bangCosmic background radiationBig bang nucleosynthesisHubble expansionHomogeneity of universe homogenoussameAge of starsWill the universe expand foreverDepends on h...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Big Bang, Hydrogen Line, Wilkinson Microwave Anisotropy Probe

Lecture 22Friday November 04 20111230 PMIn the beginning universe was cold sea of fundamental particlesThe earlier universe was smaller denser and had no structureStructure in the universe evolved hierarchly small to bigCl...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Galaxy Rotation Curve

Lecture 25Friday November 11 20111230 PMThe dark universeQuarter of the mass of the universeMost of the universe is made up of something we dont know dark matterEvidence for dark matterMotions of galaxies in clustersSpiral...

Origins
ORIGINS 2B03
Laura Parker
Lecture 26

Lecture 26Tuesday November 15 20111230 PMThe Dark universe70 of the universe is dark energy25 is dark matterLess than 1 is neutrinos4 is hydrogenheliumLess than 1 are starsEvidence for dark matterMotions of galaxies in clu...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Nucleosynthesis, Scientific Modelling, Wilkinson Microwave Anisotropy Probe

Lecture 23Tuesday November 08 20111230 PMBig Bang Nucleosynthesis BBNElectronsProtonsNeutronsALL INTERACTING AND COLLIDING FURIOUSLYPhotonsThe universe was so hot that nuclear fusion was happening everywhere only lasted a ...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Nuclear Fusion, Protostar

Lecture 21Tuesday November 01 20111230 PMGiantsLumWhite dwarftemperatureThe interstellar medium is mostly gas and dust low densityDust makes up 1 Of the stuff between stars can lock starlightWe can directly see light in th...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Lecture 19: Event Horizon, Antiparticle, Spacetime

Lecture 19Wednesday November 23 2011701 PMThe event horizonEvery object has a critical size below which it becomes ablack hole density increases called the Schwarzschild radiusThe surface is called the event horizon is wha...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Lecture 17: Drake Equation, Triple-Alpha Process

Lecture 17Friday October 21 20111230 PMAstrobiologyStudy of origin evolution distribution and future of life in the universeHow do you look for life in the universeHabitable zone look for liquid HO O intelligent signals122...

Origins
ORIGINS 2B03
Laura Parker
ORIGINS 2B03 Lecture Notes - Lecture 18: Live Fast, Die Young (Film), White Dwarf

Lecture 18Tuesday October 25 20111230 PMThe suns energy source is from hydrogen fusion pp chainThis converts hydrogen into helium plus energy Our sun can only burn till carbonThe more massive an object the hotter it is the...

Origins
ORIGINS 2B03
Laura Parker
Lecture 20

Lecture 20Friday November 25 20111230 PMWatching something fall into a BHAnything that crosses the event horizon will never come backWe dont see anything cross the event horizon the last photon from the object will reach a...

Origins
ORIGINS 2B03
Laura Parker

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