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A quantity of great interest in cosmology is the redshift, a readily observable quan-tity, de?ned as the shift in an observed wavelength obs with respect to the original wavelength that would be emitted at rest rest z ? obs rest rest = obs rest 1 (8 10) Considering that the cosmological redshift is due to the Hubble ?ow, we can write rest
The Golden Age of Cosmology All these amazing results, and their consequences introduce, Adam Riess Saul Perlmutter Brian Schmidt George Smoot: Oct 3, 2006 -- Saul Perlmutter: Oct 4, 2011 Plus two Nobel Prizes in Physics for UC Berkeley: Nobel ceremony held Dec 10, 2011
Astronomy, Astrophysics, and Cosmology Luis A Anchordoqui Department of Physics and Astronomy Lehman College, City University of New York Lesson I February 2, 2016 arXiv:0706 1988 L A Anchordoqui (CUNY) Astronomy, Astrophysics, and Cosmology 2-2-2016 1 / 22
FIG 1: Celestial spheres of ancient cosmology 1 light minute = 18×106 km, and 1 light year 1 ly = 2 998×108 m/s 3 156×107 s/yr = 9 46×1015 m ? 1013 km (1) For specifying distances to the Sun and the Moon, we usually use meters or kilometers, but we could specify them in terms of light The Earth-Moon distance is 1 5×1011 minutes
Astronomy, Astrophysics, and Cosmology Luis A Anchordoqui Department of Physics and Astronomy Lehman College, City University of New York Lesson X April 19, 2016 arXiv:0706 1988 L A Anchordoqui (CUNY) Astronomy, Astrophysics, and Cosmology 4-19-2016 1 / 24
Astronomy, Astrophysics, and Cosmology Luis A Anchordoqui Department of Physics and Astronomy Lehman College, City University of New York Lesson VII March 29, 2016 arXiv:0706 1988 L A Anchordoqui (CUNY) Astronomy, Astrophysics, and Cosmology 3-29-2016 1 / 22