COURSE SUMMARY
Course Title: 
Astrophysics
Course Code: 
15PHY532
Year Taught: 
2015
2016
2017
2018
Degree: 
Undergraduate (UG)
School: 
School of Engineering
Campus: 
Bengaluru
Chennai
Coimbatore
Amritapuri

'Astrophysics' is a course offered in the B. Tech. programs at School of Engineering, Amrita Vishwa Vidyapeetham.

Unit 1

Historical introduction: Old Indian and western – astronomy - Aryabhatta, Tycho Brahe, Copernicus, Galileo - Olbers paradox - solar system – satellites, planets, comets, meteorites, asteroids.

Practical astronomy - telescopes and observations & techniques – constellations, celestial coordinates, ephemeris.

Celestial mechanics - Kepler’s laws - and derivations from Newton’s laws.

Sun: Structure and various layers, sunspots, flares, faculae, granules, limb darkening, solar wind and climate.

Unit 2

Stellar astronomy: H-R diagram, color-magnitude diagram - main sequence - stellar evolution – red giants, white dwarfs, neutron stars, black holes - accretion disc - Schwartzchild radius - stellar masses Saha–Boltzman equation - derivation and interpretation.

Variable stars: Cepheid, RR Lyrae and Mira type variables - Novae and Super novae. Binary and multiple star system - measurement of relative masses and velocities. Interstellar clouds - Nebulae.

Unit 3

Galactic astronomy: Distance measurement - red shifts and Hubble’s law – age of the universe, galaxies – morphology - Hubble’s classification - gravitational lens, active galactic nuclei (AGNs), pulsars, quasars.

Relativity: Special theory of relativity - super-luminal velocity - Minkowski space - introduction to general theory of relativity – space - time metric, geodesics, spacetime curvature. Advance of perihelion of Mercury, gravitational lens.

Cosmology: Comic principles, big bang and big crunch – cosmic background radiation - Nucleo-synthesis - plank length and time, different cosmic models - inflationary, steady state. Variation of G. anthropic principle.

  • “Textbook of Astronomy and Astrophysics with elements of Cosmology”, V. B. Bhatia, Narosa publishing 2001.
  • William Marshall Smart, Robin Michael Green “On Spherical Astronomy“, (Editor) Carroll, Bradley W Cambridge University Press ,1977
  • Bradley W.Carroll and Dale A. Ostlie. “Introduction to modern Astrophysics” Addison-Wesley, 1996.
  • Bradley W.Carroll and Dale A. Ostlie, “An Introduction to Modern Astrophysics” AddisonWesley Publishing Company,1996
  • ‘Stellar Astronomy’ by K. D Abhayankar.
  • ‘Solar Physics’ by K. D Abhayankar.