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  • 9:22 PM, Friday, 22 Oct 2021


Course Postgraduate
Semester Electives
Subject Code ESA669
Subject Title High Redshift Universe

Syllabus

Basic cosmology - Expansion of the universe -- scal e factor -- cosmological redshift -- descriptive overview of inflation, unification of f orces and fundamental particles. Primordial nucleosynthesis -- elemental abundances : predictio ns and observations. Cosmic Microwave Background - detection, power spectrum, origin of C MB, anisotropies in the CMB and their origin -- overview of COBE and WMAP probes - missio n and instrumentation. Reionization of the universe -- quasar absorption line observations -- Gunn Peterson trough -- sources of reionization -- first stars, AGNs, Lyman Break Gala xies -- the reionization process. Detection of galaxies at high redshift - radio, sub-mm, IR surve ys -- photometric redshifts -- drop-outs -- Ly- alpha emitters. Comparison of high-z galaxy propert ies with the present universe -- morphology, stellar content, sizes, luminosity function, baryon budget etc. Clusters and groups of galaxies, morphology-density relationship, Butcher-Oemler eff ect. High Redshift Supernova -- observations used to discover and measure SNe Ia (s upernova rates, light curves, spectroscopic data) -- standard candle (heterogenei ty in SNe brightness and light curve shapes) -- SNe Type Ia data sets (SDSS, SNLS, HST etc) -- c onstrains on cosmological parameters mass density, dark energy density.

Text Books

Same as Reference

References

1. The Early Universe (Frontiers in Physics) : Edwa rd Kolb, Michael Turner, Wesview Press, 1994.

2. The Physics of the Cosmic Microwave Background : Pavel D. Naselsky, Dmitry I. Novikov and Igor D. Noyikov, Cambridge Astrophysics Series - 41.

3. Galaxies in the Universe : Linda Sparke, John Ga llagher, Cambridge University Park

4. High Redshift Galaxies : Immo Appenzeller, Astro nomy & Astrophysics LIbrary, Springer