PPT-Redshift

Lesson Objectives To understand toast Doppler principle as responsible for redshift and blueshift To perform simple calculations involving known and observed wavelengths of spectral lines and . 45 We have all heard the sound of an ambulance siren as it passes-by. The high-pitch as it approaches is by. This is an example of the Doppler many astronomical settings as well, sound waves, it’ The Cosmic Time Machine. Astronomical telescopes can’t help viewing the past.. . Distance and time are always mixed in astronomical observations.. The finite speed of light means that we always see things after they have happened–a delay of 8 minutes for the Sun and about 12 billion years for the most distant galaxies we can observe. In other words,. Constraining Dark Energy with intermediate-. redshift. probes. Hubert . Lampeitl. University Portsmouth, ICG. In collaboration with:. H.J. . Seo. , T. . Giannantonio. , C. Shapiro, R.C. Nichol, B. Bassett, W.J. Percival, T. Davis, . Sydney Institute for Astronomy (. SIfA. )/ CAASTRO – The University of Sydney. Dr. Paul Hancock. with Bryan . Gaensler. , Tara Murphy, and . Davide. . Burlon. Overview. Intro to . GRBs. Radio properties of . vs. Creation. Christopher W. Ashcraft M.S., M.Ed.. Big Bang vs. Creation. Origin of Stars. Solar System: Evidence of Design. Age of the Cosmos. Are we being told all the evidence or just selected information to support a particular idea?. and. Quasars . “A man should look for what is, and not what he thinks should be.” – Albert Einstein . Arvind. Haran and David Johnston. What is Gravitational Lensing?. Let’s take a step back to the Einstein days…. Strong . L. ensing . C. osmographic . O. bservations. Eric V. Linder (. arXiv. : 1502.01353v1). Contents. Introduction. Measuring time delay distances. Optimizing Spectroscopic . followup. Influence of systematics. Redshift. in Clusters of Galaxies. Marton Trencseni. Eotvos. University, Budapest. Gravitational . Redshift. Photon escapes from gravitational well. G. ains potential energy. Speed cannot decrease =). Leonidas . Moustakas. , JPL/Caltech. CLASH London 2013. leonidas@jpl.nasa.gov. 1. © 2013 California Institute of Technology. Government sponsorship acknowledged. Two goals in the high-redshift game. Thomas Krühler (DARK). Thanks to J. . Fynbo. , D. . Malesani. , J. . Hjorth. ,. J. Greiner, D. A. . Kann. , D. . Perley. , N. . Tanvir. , . S. . Klose. and many others. Very High Energy Phenomena in the . Paul Hewett (. IoA. , Cambridge). James Allen (U. Sydney). Outline. Motivation: . quasar . clustering, . host-galaxy and local quasar environment, relation . to Ly. α. -absorbers and the inter-galactic medium, outflow properties of quasars themselves. Past, Present and Future. HI Pathfinder Workshop. Perth, February 2-4, 2011. Philip Lah. HI . Stacking. C. oadding the . HI 21-cm emission . from distant galaxies . using the galaxies’ known . optical positions. Originally discovered by the Austrian mathematician and physicist, Christian Doppler (1803-53), this change in pitch results from a . shift. in the frequency of the sound waves. As the ambulance approaches, the sound waves from its siren are compressed towards the observer. . 5. Curved Cosmos. & . Observational Cosmology. Einstein Field Equation. Cosmological Principle. General Relativity. . . . A crucial aspect of any particular configuration is the geometry of .