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Einstein’s Lens

Presented by: Kevin McLin, SSU NASA E/PO

2008 EA Training, SSU

Einstein’s Lens

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Einstein’s Lens

Einstein’s big idea

Mass bends space. Light follows the shortest path through space.

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Einstein’s Lens

So a star’s position in the sky…

Einstein’s big idea

Star here…

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Einstein’s Lens

…appears shifted because of the bending.

Einstein’s big idea

Appears to be here

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Einstein’s Lens

Read all about it…

This headline appeared in The New York Times on November 10, 1919.

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Einstein’s Lens

Lensing on a cosmic scale

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Einstein’s Lens

What shape is your lens?

Spherical lens gives an Einstein ring

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Einstein’s Lens

Elongated lens gives multiple images – Einstein Cross

What shape is your lens?

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Einstein’s Lens

What shape is your lens?

Multiple lenses give multiple sets of arcs and arclets

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Einstein’s Lens

Gravitational lenses have become one of the most important tools in modern astronomy

Aside from nice pictures, what can lensing do for us?

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Einstein’s Lens

Exposing Dark Matter

Foreground mass distorts images of background objects

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Einstein’s Lens

Weak Lensing... Correlated Distortions

Look for correlations in galaxy orientations in small region of image

Image Credit: Y. Mellier

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Einstein’s Lens

A Smoking Gun for Dark Matter

These correlations give a map along the line of sight of the matter distribution

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Einstein’s Lens

Black hole hunting

A black hole’s presence is revealed by its own gravity.

Animation Here

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Einstein’s Lens

Not just proof of an amazing idea, but a cutting-edge tool of 21st century astronomy.

Full Circle

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Einstein’s Lens

Demonstrations...GLOYD: Gravitational Lensing on Your Desktophttp://www.stanford.edu/~mturk/gloyd/

- Matt Turk, KIPAC/Stanford

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Einstein’s Lens

Demonstrations...

A Wine Glass:

Let’s try this one...

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Einstein’s Lens

1919 Eclipse: National Maritime Museum, Greenwich

Q2237+0305: J. Rhoads, S. Malhotra, I. Dell'Antonio (NOAO) / WIYN / NOAO / NSF

Identical quasars: STScI (George Rhee)

Quasar diagram: NASA / CXC / M. Weiss

Lens shape diagrams: European Space Agency

Einstein ring: STScI, Imperial College (Steve Warren, Simon Dye)

Einstein Cross: ESA and NASA

Abell 1689: N. Benitez (JHU), et al, and the ACS Science Team, ESA, NASA

Gravitational 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 al

Lensing animation: Frank Summers (STScI)

Bullet Cluster: NASA STScI/Chandra and Magellan, U of AZ

Microlensing: NASA and Dave Bennett (University of Notre Dame, Indiana)

CL2244-04: European Southern Observatory

Planet search: OGLE Collaboration

Full circle: NASA, ESA, A. Bolton (Harvard-Smithsonian CfA) and the SLACS Team

ALBERT EINSTEIN and related rights ™/© of The Hebrew University of Jerusalem, used under license. Represented by the Roger Richman Agency, Inc., www.albert-einstein.net

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Image Credits