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  • 6:20 PM, Monday, 18 Oct 2021

Course Postgraduate
Semester Electives
Subject Code ESA670
Subject Title Polarization in Astronomy


Unpolarised light, Linear, Circular, Elliptical pol arised light, Partially and fully polarised light, Stokes parameters, Dichroism, Birefringence, Poinca re sphere - Mueller and Jones representations with applications - Complex plane o f polarisation states. Generation of polarised light in astronomy - polari sation by reflection, scattering geometry, magnetic fields - dependence on refractive index - synchrotron emission - Faraday rotation - Dust in ISM. Instrumental polarisation errors and t heir calibration Optical/infrared polarimetry - Polaroids, Wave plat es, Wollaston prism, Modulators - photoelastic modulators, liquid crystals, - compound zero order plates, achromatic retarders, fresnel rhombs, modulators with CCDs, Two beam analysers, Achromati c systems, imaging and spectropolarimetry Radio polarimetry - Orthogonal dipoles as feeds, Na tive linear and circular feeds, correlation, synthesis array and VLBI. X-ray polarimetry - Bragg Polarimeters, Thompson/Compton Polarimeters, Gas Pixel Detector (GPD) solution, Ti me Projection Chamber (TPC) polarimeter solution, X-ray polarimetry--future missions .

Text Books

Same as Reference


1. Astronomical Polarimetry - J. Tinbergen, Cambrid ege University Press

2. Polarized light by Dennis Goldstein (3rd Edition ) Marcel Dekker Inc (ISBN: 0-8247-4053- X)

3. X-ray Polarimetry--Edited By Ronaldo Bellazzini Enrico Costa Giorgio Matt Gianpiero Tagliaferri Publisher: Cambridge University Press ( 2010)

4. Introduction to the theory of Coherence and pola risation of light - Emil Wolf