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Page 1: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Lecture 2AST 449

Page 2: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Overview of the acoustic peaks • Animations and comments from Wayne’s tutorial website

(http://background.uchicago.edu/~whu/intermediate/intermediate.html)

http://background.uchicago.edu/~whu/intermediate/intermediate.html

Page 3: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

• Potential Wells and Hills

Acoustic oscillations• Gravitational compression

• Harmonic Extrema • oscillation frozen in at

recombination • extrema

Acoustic oscillations• Seeing Sound

• Harmonic Modes

Page 5: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Acoustic Peaks• Spatial flat

Page 6: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Acoustic Peaks• Baryon loading

Page 7: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Acoustic Peaks• Baryon loading

Page 8: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Acoustic Peaks• Radiation driving

Page 9: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Acoustic Peaks• Radiation driving

Page 10: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Damping tail• Diffusion damping ✓d =

rddA

/ 1

Z a⇤

a3�TneH(a)

Page 11: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Damping tail• Diffusion damping ✓d =

rddA

/ 1

Z a⇤

a3�TneH(a)

Page 12: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Damping tail• Diffusion damping ✓d =

rddA

/ 1

Z a⇤

a3�TneH(a)

Page 13: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Python environment setup on midway• In home folder - .bashrc

Page 14: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Python environment setup on midway• In home folder - .pythonstartup

Page 15: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Install cfitsio on midway

Page 16: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Install CAMB/pycamb on midway• Get CAMB package from github https://github.com/cmbant/CAMB.git

https://github.com/cmbant/CAMB.git

Page 17: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Install cosmomc+clik on midway• Get cosmomc from github [email protected]:cmbant/CosmoMC.git

• Get Planck likelihood module wget http://irsa.ipac.caltech.edu/data/Planck/release_2/software/COM_Likelihood_Code-v2.0.R2.00.tar.bz2

http://irsa.ipac.caltech.edu/data/Planck/release_2/software/COM_Likelihood_Code-v2.0.R2.00.tar.bz2

Page 18: Lecture 2 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast449_16/lecture2.pdf · •Harmonic Extrema • oscillation frozen in at recombination • extrema Acoustic

Install cosmomc+clik on midway• Install planck likelihood

thesis - University of Chicagobackground.uchicago.edu/~whu/thesis/chap3.pdfTitle: thesis.dvi Created Date: 12/30/1997 7:01:18 PM

Unsolved Problems in Dark Energy - University of Chicagobackground.uchicago.edu/~whu/Presentations/unsolvedDE_final.pdf · Said the great Spanish physicist Raul Jimenez (in Americanized

Astro 242 - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast242_16/ast242_01.pdfSyllabus Text: An Introduction to Modern Astrophysics 2nd Ed., Carroll and Ostlie Milky

H is Undervalued - University of Chicagobackground.uchicago.edu/~whu/Presentations/H014.pdf · Wyman, Rudd, Vanderveld, Hu (2013) 65 70 75 80 H 0 0.0 0.2 0.4 0.6 0.8 1.0 P/P max 0.8

The Physics of CMB Polarization - University of Chicagobackground.uchicago.edu/~whu/Presentations/polphysics.pdf · The Physics of CMB Polarization Wayne Hu ... 10 40 100 200 400

Vida Extrema

Primary Anisotropies - University of Chicagobackground.uchicago.edu/~whu/thesis/chap6.pdf131 Chapter 6 Primary Anisotropies Trees in the mountains plunder themselves, Grease in the

The Physics of CMB Anisotropies - University of Chicagobackground.uchicago.edu/~whu/Presentations/warnerprint.pdf · The Physics of CMB Anisotropies and their ... Odd Peaks Low Baryons

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Maya Fishbach - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast321_17/GWCosmology.pdfMaya Fishbach. Part I: Cosmography. Compact Binary Coalescenses are Standard Sirens

programacion extrema

Set 3: Galaxy Evolution - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast242_14/ast242_03.pdfdiscovery of other satellites like the Sagitarius dwarf and tidal streams

Whu people don't volunteer

Perturbation Evolution - University of Chicagobackground.uchicago.edu/~whu/thesis/chap5.pdf · Perturbation Evolution Although heaven and earth are great, their evolution is uniform

More about Extrema

Lecture 3 The Halo Model - University of Chicagobackground.uchicago.edu/~whu/Presentations/trieste_print3.pdf · Lecture 3: The Halo Model Wayne Hu Trieste, June 2002 Structure Formation

thesis - University of Chicagobackground.uchicago.edu/~whu/thesis/chap4.pdfTitle: thesis.dvi Created Date: 12/30/1997 7:02:09 PM

Dark Energy in Light of the CMB - University of Chicagobackground.uchicago.edu/~whu/Presentations/cmbh0.pdf · 2009-10-01 · Fixed Deceleration Epoch • CMB determination of matter

Review 3.1-3.3 - Increasing or Decreasing - Relative Extrema - Absolute Extrema - Concavity

Set 2: Cosmic Geometry - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast243_18/ast243_02.pdfGravity as Geometry Einstein says Gravity as a force is really the geometry

CMB Anisotropy - University of Chicagobackground.uchicago.edu/~whu/Presentations/ias02.pdfCMB Anisotropy Recent and Future Milestones Wayne Hu IAS, November 2002 l D P (m K) c r o

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Kellogg-WHU Brochure

Astro 305 Lecture Notes - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast305_10/ast305_01.pdf · Liouville’s theorem (conservation of I = 3) in absence of interactions;

The Physics of CMB Polarization - University of Chicagobackground.uchicago.edu/~whu/Presentations/polar.pdf · The Physics of CMB Polarization ... • Non-linear secondary anisotropies

Chacara extrema mg

Early Universe Models Post Planck - University of Chicagobackground.uchicago.edu/~whu/Courses/Ast448_18/wolf.pdf · In ation Motivation I In ation is the idea that the very early

A CMB polarization primer - University of Chicagobackground.uchicago.edu/~whu/Papers/polar.pdf · 2017-02-16 · New Astronomy 2 (1997) 323–344 A CMB polarization primer Wayne Hu

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