National Institute of Technology Rourkela

राष्ट्रीय प्रौद्योगिकी संस्थान राउरकेला

ଜାତୀୟ ପ୍ରଯୁକ୍ତି ପ୍ରତିଷ୍ଠାନ ରାଉରକେଲା

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Syllabus

Course Details

Subject {L-T-P / C} : PH6127 : Galactic and Extra-Galactic Dynamics { 3-0-0 / 3}

Subject Nature : Theory

Coordinator : Ananta Charan Pradhan

Syllabus

Module 1 :

Module-1 (9 hours)
Extra-Galactic System: Structure and evolution of our Galaxy Milky Way, Classification of Galaxies (spirals, elliptical and irregulars, Hubble pitchfork classification), Clusters of Galaxies, Galaxy interactions, Determination of the masses, Determination of extra-galactic distances.

Module-2 (7 hours)
Active Galaxies: Active galaxies and galactic nuclei, Radio galaxies, Quasars and their properties, Accretion discs, Supermassive Black holes.

Module-3 ( 9 hours)
Galactic Structure: General Galactic rotational law. Oort’s theory of galactic rotation. Determination of Oort’s constants. Spiral structure of our Galaxy from optical and radio Observations. Size and mass of our galaxy.

Module-4 ( 11 hours)
Galactic Dynamics: Background radiation and disk component, discrete sources of thermal and non thermal radiation, HII regions and supernovae remnants, 21-cm hydrogen and OH line radiations. Spiral structure of the galaxy, pulsars, radio galaxies, QSO’s and active galactic nuclei-their implications on cosmology.

Course Objective

1 .

To inculcate the students about our present knowledge of the galactic and extra-galactic astronomy.

2 .

Using knowledge of basic physics and astrophysics, students will understand the origin and evolution of the larger picture of cosmic universe.

3 .

To provide the overall picture of the galactic structure and evolution with the recently available galactic observations.

4 .

To give insight on the most luminous objects of the Universe, the AGNs.

Course Outcome

1 .

CO 1: Understanding Galaxy Structure
Students will comprehend the structure of the Milky Way and other galaxies.
CO 2: Galaxy Characteristics and Evolution
Students will describe characteristics of different galaxy types and understand their formation and evolution in a cosmological context.
CO 3: Deriving Physical Parameters
Students will acquire knowledge on deriving physical parameters related to galaxies.
CO 4: Galactic Phenomena and Universal Insights
Students will understand various phenomena within galaxies, how they aid in gathering knowledge about galaxies, and the broader universe.

Essential Reading

1 .

J. Binney and M. Merrifield, Galactic astronomy, Princeton University Press 2nd edition

2 .

J. Binney and S. Tremaine, Galactic Dynamics, Princeton University Press 2nd edition

Supplementary Reading

1 .

Frank Shu, Physical Universe, University Science Books

2 .

Bradley Caroll and Dale A. Ostile, An Introduction to Modern Astrophysics, Addison-Wesley 2nd edition