PDF-The Cosmological Redshift: Changing the light from a galaxy

45 We have all heard the sound of an ambulance siren as it passesby The highpitch as it approaches is by This is an example of the Doppler many astronomical settings as well sound waves it146. Lecture . 10; . May . 14 2013. Previously… on astro-2. If the universe is homogenous and isotropic and correctly described by General Relativity:. At any given time the universe is a 3D space. It could be open/close/flat. 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,. and . Galaxy Evolution. Meg Urry. Yale University. ~All galaxies host supermassive black holes. The . formation. and . evolution. of . galaxies. is closely tied to. the . growth. of . black holes. 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. Edge-on Spiral Galaxy NGC 891. www.noao.edu. Edge-on Spiral Pancake. Galactic Bulge. Gas and dust. Stars. Dark Matter Halo. 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. 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. Contains more than 100 billion stars. Is one of the two largest among 40 galaxies in the Local Group. Our Solar System is located a little more than half way from the galactic center to the edge of the galactic disk.. 2nd Millennium BCE. BC. . . Mesopotamian cosmology . has a flat,circular Earth enclosed in a cosmic Ocean. 12. th. century BCE. C. . Rigveda. has some cosmological hymns, most notably the Nasadiya Sukta. Lecture 1. Josh . Frieman. I Jayme . Tiomno. School of Cosmology, Rio de Janeiro, Brazil. July 2010. Hoje. I. Cosmology Review. II. Observables: Age, Distances. III. Type . Ia. Supernovae as . Standardizable. 5. Curved Cosmos. & . Observational Cosmology. Einstein Field Equation. Cosmological Principle. General Relativity. . . . A crucial aspect of any particular configuration is the geometry of . homgeneity. of the universe.. 2. understand how Hubble’s law is used to map the universe, and look back in time.. 3. Know each of the major predictions of the Big Bang theory, and corresponding confirmations by observation.. Christopher Hirata. Edinburgh, 22 Jul 2010. C.H., MNRAS 399:1074 (2009) – . Redshift. space distortions. Elisabeth Krause & C.H., 1004.3611 – . Bispectrum. Outline. Growth of Structure. Tidal Alignments & Effects on LSS. in . simulations. of . galaxy. . formation. G. Murante – INAF . OATo. P. Monaco – . Univ. . . Ts. M. Calabrese – SISSA . Ts. G. De Lucia - INAF . OATs. S. . Borgani. – . Univ. . . Ts. K. .