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Astronomy 201 Cosmology

Astronomy 201 Cosmology. Dr. Matthias Steinmetz Steward Observatory University of Arizona Room 312 msteinmetz@as.arizona.edu (520) 621 5923. Lecture 1: What this class is about. The rules of the game Lectures and Lecturers, Office Hours, Notes Homework, Quizzes, and Projects

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Astronomy 201 Cosmology

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  1. Astronomy 201Cosmology Dr. Matthias Steinmetz Steward Observatory University of Arizona Room 312 msteinmetz@as.arizona.edu (520) 621 5923 Astronomy 201 Cosmology - Lecture 1

  2. Lecture 1: What this class is about • The rules of the game • Lectures and Lecturers, Office Hours, Notes • Homework, Quizzes, and Projects • Midterms, Finals, Academic Integrity • Grading • What this class is about • The topics • The schedule Astronomy 201 Cosmology - Lecture 1

  3. Lectures and Lecturers • Class meets MWF 2pm-2:50pm in N210 • Lecture notes available online • Professor: Dr. Matthias Steinmetz • Steward Observatory Room 312 • Office hours: Mon: 3-4, Tue, Fri: 11-12 • Teaching Assistant: Mr. Patrick Young • Steward Observatory Room D317 (in the Dome) • Office hours: Wed, Thu: 3-4 Astronomy 201 Cosmology - Lecture 1

  4. Homeworks and Project • 12 homework sets will be distributed • no credit for late home works, no exceptions • lowest 2 scores will be dropped • some sets have a math/no math option • Semester project • several topics to choose from • you may choose your own topic, but clear it with me first • 3 steps: abstract, draft, final project Astronomy 201 Cosmology - Lecture 1

  5. Midterms and Finals • 3 midterm examinations • 50 min in N210 • lowest score will be dropped • not cumulative, cover only material since the last midterm • closed book, but one and only one cheat-sheet is allowed • Final examination • 2 hours in N210 • covers everything we did • closed book, but one and only one cheat-sheet is allowed • No make-up exams, no exceptions • Cheating: strict adherence to University policies Astronomy 201 Cosmology - Lecture 1

  6. Quizzes, Discussion Sessions, Attendance • 10-15 random quizzes, also used as attendance check • discussion session in class, also used as attendance check • random attendance checks • grade penalties if more than 3 lectures are missed • administrative drop if too many lectures/home works are missed Astronomy 201 Cosmology - Lecture 1

  7. Need Help ? • ask questions in class and/or after class • ask questions by email (I try to answer every email within 24h, but for simple things the response may be much faster) • see me or Patrick during our office hours • our astronomy undergraduates offer tutoring Astronomy 201 Cosmology - Lecture 1

  8. In the Lecture Hall ... • We are about 150 people !!!! • Please don’t drink and eat, don’t read newspapers • Please switch off your cell-phone before you come in • Please don’t talk with your neighbor • Be in time. If you’re late, please be as quite as possible • Don’t start packing your stuff when the lecture is still going on Astronomy 201 Cosmology - Lecture 1

  9. Grading • Midterms (2*25) + Final (40) + Homeworks (40) + Project (40) + Quizzes (30) = 200 • NOTE: examinations only add up to 45% of the grade !!! • > 180: A • 150-180: B • 120-150: C • 90-120: D • < 90: E Astronomy 201 Cosmology - Lecture 1

  10. The History of Cosmology • Mythology vs the scientific method • Cosmos = Earth  solar system  Milky Way  Hubble sphere Astronomy 201 Cosmology - Lecture 1

  11. Newton: Cosmology as a Science • Newton’s laws • Newton’s gravity: The heavens and the Earth follow the same principle • Galileo: Relativity before Einstein Astronomy 201 Cosmology - Lecture 1

  12. Einstein’sTheory of Special Relativity • Principle of Relativity • Giving up absolute space and time • Space and time: where common sense makes no sense • what is here and there or now and then ? Astronomy 201 Cosmology - Lecture 1

  13. Einstein’sTheory of General Relativity • Is mass and mass the same thing ? • Principle of equivalence • Curved Spaces • The entire Universe in one line • Testing the theory • Black Holes Astronomy 201 Cosmology - Lecture 1

  14. The Big-Bang Model • Expanding Universes • Why Big Bang ? • Einstein’s biggest blunder • Making the Universe comprehensible • The cosmic microwave background, a snapshot of the young universe • The signature of God Astronomy 201 Cosmology - Lecture 1

  15. Structure Formation in the Universe • Where do galaxies come from ? • How to weigh the universe ? • Evidence for dark matter, but what is it ? • What the macro cosmos tells us about the micro cosmos Astronomy 201 Cosmology - Lecture 1

  16. The Early Universe • Origin of chemical elements • Particle Physics joins Astrophysics • The search for the dark matter Astronomy 201 Cosmology - Lecture 1

  17. Before the Beginning ... • Puzzling facts about the universe • Inflation • Weird physics: strings, wrapped extra dimensions Astronomy 201 Cosmology - Lecture 1

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