ï»¿Big Bang, Black Holes, No Math ASTR/PHYS 109 Dr. David Toback Lecture 23 & 24Slide 2
Papers Paper 1 is done Paper 2 evaluations are on eLearning All evaluations settled, update paper grades posted Paper 3: We have altered papers for alignment issues Still mis-reviewed? Tell us! Perform mouth to mouth on the off chance that you presented a correction Paper 4: Was expected today before class Paper 5 (last paper, no last) Assigned after we begin Chap 20Slide 3
Other Stuff Elearning: Unit 5 has Unit 6 questions (moan… ) 5 and 6 will both be expected a day ago of class Schedule starting now and into the foreseeable future Today: Ch 19 & 20 (paper 4 due) Wed Apr 21: No class, Muster Mon Apr 26: Ch 20 &21 (paper 4 CPR due) Wed Apr 28: Ch 21 & 22 Mon May 3: Ch 22 (a day ago of class, paper 5 due) 3Slide 4
The Reading for Unit 6 Full perusing for Unit 6: BBBHNM: Chaps. 18-22 SHU: 8 (159-164) BHOT: 11 (122-137), 12 Seeds (Cosmology in the 21 st Century, Web Handout) Full perusing through Unit 6: BBBHNM: Chaps. 1-22 TFTM: Chaps. 1-5 BHOT: Chaps. 1-7, 8 (68-76), 9 and 11 (117-137), 12 SHU: Chaps. 1-3, 4(77-86), 5(95-114), 6-8 (up-to-page 164 ) TOE: Chaps. 1-3 Seeds (Cosmology in the 21 st Century)Slide 5
Unit 6 Going back in time and going ahead in time Before the main millionth of a second and the Fate of the UniverseSlide 6
Outline of Unit 6 Possible Fates of the Universe The Case for Dark Matter Particle Physics and Dark Matter Inflation Dark Energy TodaySlide 7
Summarizing the Data so Far Redshifts of Galaxies gives us the pace of development decently precisely The deliberate mass of the "stars and stuff" gives around 4% of the basic thickness The Cosmic Background Radiation is predictable with a thickness of 100% of the basic thickness Something is conflicting…Slide 8
The Story There is a solid case to be made that there is Matter and Energy in the Universe we can\'t "see" specifically The Evidence for Dark Matter Today Particle Physics and Dark Matter The Standard Model and Supersymmetry Next timeSlide 9
Today\'s Lecture The Case for Dark Matter The Rotation of Galaxies Gravitational Lensing Colliding Galaxies Note: SHU is somewhat obsolete…Slide 10
What is Dark Matter and why do we call it Dark Matter ? What do we see when we take a gander at the Heavens? Our eyes see photons, yet with different identifiers we can see electrons, protons, iotas and neutrinos All these things connect with photons ï¨ we can "see" them since they create the light we watchSlide 11
Dark Matter If there is something else out there it must not interface with light particularly Call this "Dull Matter"Slide 12
Evidence 1 Watch the way stars pivot around the focal point of GalaxiesSlide 13
The Planets and the Sun General Relativity benefits a vocation of foreseeing the planets way around the sun accepting for all intents and purposes all the mass of the Solar framework is situated at the Sun Only little impact because of the little masses of alternate planetsSlide 14
What about Stars and Galaxies? Could again utilize General Relativity to anticipate the circles of stars as they move around the cosmic system Should resemble a mind boggling gathering of individual stars all in particular free circles around the heart of the universe Problem: This isn\'t what the information appearsSlide 15
The DataSlide 16
Does this work for Stars? Observe how quick a star pivots around the focal point of the cosmic system… Simulation without Dark Matter Simulation with loads of Dark Matter particles in the world Data appears as though this http://bigbang.physics.tamu.edu/Figures/StolenAnimations/galrot_anim.gifSlide 17
Stuff Outside the Stars? Could likewise take a gander at the billows of hydrogen on the edges of the cosmic system Also pivoting quicker than they ought to be Looks like they are feeling the gravity of a lot of mass we can\'t "see"Slide 18
Dark Matter? Information very much clarified by loads of "Dull Matter" we can\'t see Mostly amassed at the middle because of gravity Lots of it in a "corona" around the whole cosmic systemSlide 19
Evidence 2 Look at the gravitational effect on light that goes through the Universe towards usSlide 20
General Relativity and Light The vast mass of the Sun can twist the way of light Result: The evident position of a star "moved" as the light went from space, past the Sun, and to us Is here "Looks" like its here Light\'s way in bended space timeSlide 21
Looking at Light from the Universe Galaxy Light from a Galaxy Another Galaxy Hydrogen Cloud Looks like a Galaxy behind a billow of overwhelming "stuff" that isn\'t simply stars and hydrogen Looks like a Galaxy behind a billow of hydrogen Looks like a GalaxySlide 22
Lensing of Galaxies Prism Dark Matter "Lenses" the worlds behind them like a crystal Evidence that the light coming to us is going through heaps of matter we can\'t see straightforwardlySlide 23
More on Lensing Sometimes we can even see more than one picture of the same universe!Slide 24
Evidence 3 Colliding Clusters of GalaxiesSlide 25
Look at Colliding Clusters of Galaxies Atoms in the Galaxies associate and back off as they go through each different Atoms Dark Matter doesn\'t interface much so it isn\'t backed off much Dark Matter Dark MatterSlide 26
Colliding Galaxy Clusters The particle part and the Dark Matter some portion of Galaxies collaborate contrastingly as they go through each different Atoms and Dark Matter Atoms and Dark Matter Atoms Dark Matter Dark MatterSlide 27
Colliding Galaxy Clusters Galaxy Light from a Galaxy Atoms and Dark Matter Atoms and Dark Matter Atoms Dark Matter Dark MatterSlide 28
Evidence for This in Nature? Impacting Clusters of Galaxies Blue is the part from lensing just "Quick ï¨ Dark Matter" Red part from watching the light "Moderate ï¨Atoms "Slide 29
What IS Dark Matter? We don\'t have the foggiest idea… Still dealing with it…Slide 32
For Next Time Could the Dark Matter simply be a pack of a solitary kind of new major molecule? Chap 20: Particle Physics The Standard Model of Particle Physics Supersymmetry Full perusing for Unit 6: BBBHNM: Chaps. 18-22 SHU: 8 (159-164) BHOT: 11 (122-137), 12 Seeds (Cosmology in the 21 st Century, Web Handout) Full perusing through Unit 6: BBBHNM: Chaps. 1-22 TFTM: Chaps. 1-5 BHOT: Chaps. 1-7, 8 (68-76), 9 and 11 (117-137), 12 SHU: Chaps. 1-3, 4(77-86), 5(95-114), 6-8 (up-to-page 164 ) TOE: Chaps. 1-3 Seeds (Cosmology in the 21 st Century) Lecture prep: Turn in on eLearning Two questions from Chapter 20 you need to know the response toSlide 33
End of LectureSlide 34
Evolution of The Universe Put it all together and there is noteworthy proof that there is LOTS of dim matter in the UniverseSlide 35
Writing Assignments Short Assignments 1, 2 & 3 Re-do\'s are still conceivable. Need to overhaul once more? Converse with me eLearning: Unit 5 past due Need to be chipping away at Unit 6 35Slide 36
Last Paper Due a day ago of class If you did the Black Hole paper your paper is posted now, on Dark Matter If you didn\'t do the Black Hole paper you should turn in a Research Paper Turn in at eLearning like normal 36Slide 37
Ok… What Does it Look Like? Stars look more like they are turning as though they are a piece of a solitary strong, goliath wheel Looks like this wheel would be MUCH more gigantic than the aggregate of all the stars in the world Also, a great deal more spread out than the greater part of the mass at the insideSlide 38
Does this work for Stars? Observe how quick a star turns around the focal point of the system… http://bigbang.physics.tamu.edu/Figures/StolenAnimations/galrot_anim.gifSlide 39
Evidence 4 Is the universe made up of simply the known particles? Electrons? Protons? Neutrons? Neutrinos? Maybe its simply known particles we can\'t see? The Earth doesn\'t sparkle…Slide 40
Composed of Normal Matter? 0 Lots of "protons and neutrons" we can\'t see? Take a gander at the measure of Deuterium and Lithium in the Universe The information anticipate that typical matter is just ~4% of the basic thickness Consistent with different perceptionsSlide 41
Does this work for Stars? Observe how quick a star turns around the focal point of the world…Slide 42
Does this work for Stars? Observe how quick a star turns around the focal point of the universe…Slide 43
How the Earth hopes to Light… Path doesn\'t bend Path does bendSlide 44
What is the Evidence for Dark Matter?Slide 45
Need a photo here… TCP Figure 21.1, page 614 ? Shockwave video contrasting system pivot and without dim matterSlide 46
Dark Matter 0 Combined mass of all "noticeable" matter (i.e. emanating any sort of radiation) in the universe signifies significantly less than the basic thickness. Gravitational lensing demonstrates that some bunches contain 10 times as much mass as is specifically obvious.Slide 47
From this we can finish up (yet not demonstrate) that quite a bit of our cosmic system\'s mass must lie past the separation of the Sun\'s circle around the galactic focus, and conveyed all through the world\'s round corona Most of the light originates from the middle Thus, there is a lot of matter that we can\'t seeSlide 48
Rotation Stuff However, there is loads of "dull matter" that we can\'t see specifically yet which we know must be thereSlide 49
SHU 8 cont… This "dim, inconspicuous matter must have so much mass that it held the stars in position, making them the sparkling center of a goliath imperceptible wheel"Slide 50
TCP 21 One of our most loved reasons is to take a gander at the nuclear hydrogen mists in the Milky Way. The mists lay extremely far out from the galactic focus (farther than our sun) and are pivoting speedier than they ought to be in the event that they
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