Seeing the Invisible: Observing the Dark Side of the Universe Sarah Bridle University College London.

Slides:



Advertisements
Similar presentations
Chapter 18: Cosmology For a humorous approach to quarks, check out the Jefferson Lab’s game.  In Looking for the Top Quark, each player receives six quarks.
Advertisements

Origin & Evolution of the Universe
Chapter 16 Dark Matter And The Fate Of The Universe.
Dark Energy. Conclusions from Hubble’s Law The universe is expanding Space itself is expanding Galaxies are held together by gravity on “small” distance.
Chapter 20 Dark Matter, Dark Energy, and the Fate of the Universe.
Objectives Distinguish the different models of the universe.
J. Goodman – May 2003 Quarknet Symposium May 2003 Neutrinos, Dark Matter and the Cosmological Constant The Dark Side of the Universe Jordan Goodman University.
Science of the Dark Energy Survey Josh Frieman Fermilab and the University of Chicago Astronomy Lecture 1, Oct
DARK MATTER Matthew Bruemmer. Observation There are no purely observational facts about the heavenly bodies. Astronomical measurements are, without exception,
Probing The Dark Universe Josh Frieman Fermilab & The University of Chicago Link to Learn, May, 2011.
Progress on Cosmology Sarah Bridle University College London.
Scales in Space and Time in the Cosmos By Dr. Harold Williams of Montgomery College Planetarium
Chapter 30 Section 4 Handout
Can you answer the following questions from yesterday’s lesson? 1.What was the name of the first man-made satellite? 2.When was the first man-made satellite.
30.3 Big Bang Theory. Doppler Effect Doppler effect = apparent shift in the wavelengths of energy emitted by an energy source moving away from or towards.
Vacuum Energy in the Universe Scott Dodelson April 5, 2000.
Chapter 26: Cosmology How big is the universe? How long has it been around and how long will it last?
Star Systems and Galaxies Galaxies and the Big Bang Theory.
Eric V. Linder (arXiv: v1). Contents I. Introduction II. Measuring time delay distances III. Optimizing Spectroscopic followup IV. Influence.
Chapter 22 Dark Matter, Dark Energy, and the Fate of the Universe
Dark Matter, Dark Energy, How Come Some People Think We Need It and Others Don’t and the Fate of the Universe.
Standard Cosmology.
Birth of a Theory Chapter 30.4.
COSMOLOGY SL - summary. STRUCTURES Structure  Solar system  Galaxy  Local group  Cluster  Super-cluster Cosmological principle  Homogeneity – no.
Exploring Dark Matter through Gravitational Lensing Exploring the Dark Universe Indiana University June 2007.
Dark Energy Expanding Universe Accelerating Universe Dark Energy Scott Dodelson March 7, 2004.
Hubble’s Observations - Edwin Hubble, in the late 1920's, discovered that all galaxies are moving away from each other as he observed the red shift in.
Cosmology. We can simulate how a nearly smooth distribution of dark matter turns into our lumpy, grainy Universe with its hierarchy of structures -
Big Bang Theory – A History 1927: Belgian priest Georges Lemaître proposes that the universe began with the explosion of a "primeval atom". Einstein develops.
Introduction to cosmology Today results on dark energy Future experiments Search for dark energy.
Racah Institute of physics, Hebrew University (Jerusalem, Israel)
Announcements The final exam will be at Noon on Monday, December 13 in Van Allen Hall LR1. Practice questions for unit #5 are available on the class web.
Composition Until 30 years ago, we thought all matter was “baryonic” matter (protons, neutrons, electrons). Now: 4.6% is baryonic matter 95% is non-baryonic.
Fate of the Universe 1)Fate of the Universe 2)Shape of the Universe 3)Large Scale Structure November 25, 2002 Final Exam will be held in Ruby Diamond Auditorium.
The Big Bang Theory Earth and Space Ms. Lizette Gutierrez Austin High School.
General Relativity and Cosmology The End of Absolute Space Cosmological Principle Black Holes CBMR and Big Bang.
To do: Run through the ppt on Big Bang and Cosmology (resources.faulkes-telescope.com > GCSE Astronomy > Class Exercises > Cosmology Complete the following.
DCMST May 22 nd, 2007 Dark matter and dark energy Gavin Lawes Wayne State University.
Announcements Final exam is Monday, May 9, at 7:30 am. –Students with last names A-K go to 225 CB. –Students with last names L-Z go to 300 CB. –All students.
General Relativity and Grade-9 Astronomy. 0) Gravity causes time to slow down. Everyday Einstein: The GPS and Relativity OAPT Conference May 12 – 14 McMaster.
Birth of a Theory Chapter The Universe & Beyond -Cosmology – study of origin, structure, & future of the universe. Why? -to study how the universe.
The Big Bang: Fact or Fiction? The Big Bang vs the Steady State A new perspective? Dr Cormac O’Raifeartaigh.
The Expanding Universe  When light or sound moves toward or away from an observer, its frequency/wavelength changes (Known as Doppler effect)  Can be.
The Origin of the Universe Chapter 20.3 Notes. What is the Universe? The universe consists of all space, matter, and energy that exists—now, in the past,
Option D. 3. Universe was born around 13.8 billion years ago in process called Big Bang In the beginning, all matter & energy in the entire universe was.
Chapter 20 Cosmology. Hubble Ultra Deep Field Galaxies and Cosmology A galaxy’s age, its distance, and the age of the universe are all closely related.
Measuring Cosmic Shear Sarah Bridle Dept of Physics & Astronomy, UCL What is cosmic shear? Why is it hard to measure? The international competition Overview.
Earth Science Test 7: Stars Tuesday, Dec 2, 2014.
COSMOLOGY The study of the origin, structure, and future of the universe.
Dark Matter, Dark Energy
Wilkinson Microwave Anisotropy Probe (WMAP) By Susan Creager April 20, 2006.
Cosmology -- the Origin and Structure of the Universe Cosmological Principle – the Universe appears the same from all directions. There is no preferred.
Chapter 30 Section 4 Review Page 796 #’s 1-4 The Big Bang Theory.
Image of the day Turn in cosmology questions!.
The Origin of the Universe
Chapter 30 Section 4 Big Bang Theory.
Big Bang Theory Assessment
Announcements Final exam is Monday, May 9, at 7:30 am.
BIG BANG THEORY.
Formation of the Solar System
Cosmology: SNC 1D.
WHAT KIND OF UNIVERSE DO YOU LIVE IN?
The invisibles of the Universe
The Big Bang and the Future of the Universe
Cosmology The study of the structure and evolution of the Universe as a whole. Seeks to answer questions such as: How big is the Universe? What shape is.
Absorption lines of a galaxy shift toward the blue end of the spectrum when it moves toward Earth. The lines shift to the red end of the spectrum when.
Cosmological Expansion and Dark Energy
Absorption lines of a galaxy shift toward the blue end of the spectrum when it moves toward Earth. The lines shift to the red end of the spectrum when.
Science Notes: Stnd 14 Date Standard 14: 8.ESS1.1 The Big Bang
BIG BANG THEORY.
Presentation transcript:

Seeing the Invisible: Observing the Dark Side of the Universe Sarah Bridle University College London

What we see

What we don’t see

Missing matter: Dark Matter (matter that doesn’t shine)

What we don’t see Missing energy: Dark Energy (energy that is not matter) Missing matter: Dark Matter (matter that doesn’t shine)

Supernovae as Standard Candles

Big Bang5 billion years agoToday

Why is the Universe Accelerating? Einstein’s cosmological constant A new fluid called Dark Energy General Relativity is wrong

Seeing the Invisible: Is there something in between us and the wall and tree?

Using the bending of light to see the invisible

Just one Equation from General Relativity

90 years ago Eddington confirmed Einstein’s prediction during a solar eclipse

Average galaxies together to measure weak gravitational shear

Simulated Dark Matter Map

Gravitational Lensing Map

Universe was 0.2 Gyr old

Universe was 1 Gyr old

Universe was 4.7 Gyrs old

Today (13.6 Gyr)

Map in 3d

Typical star used for finding telescope response Typical galaxy used for lensing

Gravitational Lensing

Atmosphere and Telescope

Pixelisation

Noise

Results from the HST COSMOS Survey

The Largest ever Survey with HST

The Visible The Invisible

In 3 Dimensions

The Future JDEM

Future prospects Cosmic microwave background radiation – Distribution of dark matter at early times Distribution of galaxies – Some clues to distribution of matter Galaxy velocities – Galaxies fall towards dark matter clumps Gravitational lensing The Dark Energy Survey

Hexapod Corrector Lenses CCD Readout Filters Shutter Mechanical Interface of DECam Project to the Blanco Focal plane (detector)

Ground vs Space weak lensing shear space ground

HST COSMOS

Why is the Universe Accelerating? Einstein’s cosmological constant A new fluid called Dark Energy General Relativity is wrong

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.