Einstein’s LensEinstein’s big ideaSlide 3Slide 4Testing the predictionSlide 6As predicted…Slide 8Read all about it…Lensing goes cosmicIdentical twins?Lensing on a cosmic scaleBreaking newsWhat shape is your lens?Slide 15Slide 16Nice pictures, but what can lensing do for us?1. The biggest magnifying glass in the universe!2. A new way to measure distance3. Black hole huntingJust passing through…4. Exposing dark matter5. Ogling alien worldsFull circleImage Creditshttp://www.universeforum.org/einstein/Einstein’s LensPresented by: Name, AffiliationLocation and Date hereEinstein’s Lenshttp://www.universeforum.org/einstein/Einstein’s LensEinstein’s big ideaMass bends space. Light follows the shortest path through space.http://www.universeforum.org/einstein/Einstein’s LensSo a star’s position in the sky…Einstein’s big ideaStar here…http://www.universeforum.org/einstein/Einstein’s Lens…appears shifted because of the bending.Einstein’s big ideaAppears to be herehttp://www.universeforum.org/einstein/Einstein’s LensThe positions of stars in the night sky are known to high accuracy…Stars here……but the Sun’s gravity will warp the space that the starlight travels throughTesting the predictionhttp://www.universeforum.org/einstein/Einstein’s LensSo when their light passes close by the Sun their positions will appear to changeAppear to be here…if you could see them during the day!Testing the predictionhttp://www.universeforum.org/einstein/Einstein’s LensOn May 29, 1919, the Sun passed in front of the bright Hyades star cluster…and the Moon passed in front of the Sun.As predicted…http://www.universeforum.org/einstein/Einstein’s LensSky map showing the amount and direction of shift of star positions.As predicted…http://www.universeforum.org/einstein/Einstein’s LensRead all about it…This headline appeared in The New York Times on November 10, 1919.http://www.universeforum.org/einstein/Einstein’s LensAdvances in telescope technology have revealed a universe of illusion!Lensing goes cosmichttp://www.universeforum.org/einstein/Einstein’s LensThe discovery of identical quasars in the 1970s took gravitational lensing to cosmological scalesIdentical twins?http://www.universeforum.org/einstein/Einstein’s LensLensing on a cosmic scalehttp://www.universeforum.org/einstein/Einstein’s LensThe discovery of lensed quasars not only showed the power of Einstein’s idea, but was the proof that the enigmatic quasars were at vast cosmological distances.Quasar 0957+561 from the VLA radio telescopeBreaking newshttp://www.universeforum.org/einstein/Einstein’s LensWhat shape is your lens?Spherical lens gives an Einstein ringhttp://www.universeforum.org/einstein/Einstein’s LensElongated lens gives multiple images – Einstein CrossWhat shape is your lens?http://www.universeforum.org/einstein/Einstein’s LensMultiple lenses give multiple sets of arcs and arcletsWhat shape is your lens?http://www.universeforum.org/einstein/Einstein’s LensGravitational lenses have become one of the most important tools in modern astronomyNice pictures, but what can lensing do for us?http://www.universeforum.org/einstein/Einstein’s LensSeeing the most distant - and youngest - galaxies in the universe1. The biggest magnifying glass in the universe!http://www.universeforum.org/einstein/Einstein’s LensDifferent images take different paths, and have different travel times. 2. A new way to measure distancehttp://www.universeforum.org/einstein/Einstein’s LensFor animation source, see link in notes.Animation must be saved in same folder as Power Point to run.3. Black hole huntingA black hole’s presence is revealed by its own gravity.http://www.universeforum.org/einstein/Einstein’s LensA star’s brightness is magnified by a black hole lens.Just passing through…http://www.universeforum.org/einstein/Einstein’s LensLensing maps both the mass we can see, and the mass we can’t.4. Exposing dark matterhttp://www.universeforum.org/einstein/Einstein’s Lens5. Ogling alien worldsGravitational Microlensing: A whole new way to find planets around other starshttp://www.universeforum.org/einstein/Einstein’s LensNot just proof of an amazing idea, but a cutting-edge tool of 21st century astronomy.Full circlehttp://www.universeforum.org/einstein/Einstein’s LensALBERT EINSTEIN and related rights ™/© of The Hebrew University of Jerusalem, used under license. Represented by the Roger Richman Agency, Inc., www.albert-einstein.nethttp://www.universeforum.org/einstein/http://www.universeforum.org/einstein/Image Credits1919 Eclipse: National Maritime Museum, GreenwichQ2237+0305: J. Rhoads, S. Malhotra, I. Dell'Antonio (NOAO) / WIYN / NOAO / NSFIdentical quasars: STScI (George Rhee)Quasar diagram: NASA / CXC / M. WeissLens shape diagrams: European Space AgencyEinstein ring: STScI, Imperial College (Steve Warren, Simon Dye)Einstein Cross: ESA and NASAAbell 1689: N. Benitez (JHU), et al, and the ACS Science Team, ESA, NASAGravitational lensing: NASA, ESA, J. Blakeslee and H. Ford (JHU))Arcs: ESA, NASA, J.-P. Kneib (Caltech / Obs. Midi-Pyrénées) and R. Ellis (Caltech)Cloverleaf quasar: NASA / CXC / Penn State / G. Chartas, et alLensing animation: Frank Summers (STScI)Microlensing: NASA and Dave Bennett (University of Notre Dame, Indiana)CL2244-04: European Southern ObservatoryPlanet search: OGLE CollaborationFull circle: NASA, ESA, A. Bolton (Harvard-Smithsonian CfA) and the SLACS