Dear Colleagues,

The latest issue of Current Science (Vol.108, No.9, pp.1731, 10th May.2015) contains the following article in “Living Legends in Indian Science” titled “B. V. Sreekantan: A versatile and humane scientist by P.C. Agrawal” which may be of interest to many of us.

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With Regards,



Waves and Oscillations in Nature:

An Introduction Satya

By A Satya Narayanan, Swapan K Saha

CRC Press – 2015 – 544 pages

About this Book:

Waves and oscillations are found in large scales (galactic) and microscopic scales (neutrino) in nature. Their dynamics and behavior heavily depend on the type of medium through which they propagate.

Waves and Oscillations in Nature: An Introduction clearly elucidates the dynamics and behavior of waves and oscillations in various mediums. It presents different types of waves and oscillations that can be observed and studied from macroscopic to microscopic scales. The book provides a thorough introduction for researchers and graduate students in assorted areas of physics, such as fluid dynamics, plasma physics, optics, and astrophysics.

The authors first explain introductory aspects of waves and electromagnetism, including characteristics of waves, the basics of electrostatics and magnetostatics, and Maxwell’s equations. They then explore waves in a uniform media, waves and oscillations in hydrodynamics, and waves in a magnetized medium for homogeneous and nonhomogeneous media. The book also describes types of shock waves, such as normal and oblique shocks, and discusses important details pertaining to waves in optics, including polarization from experimental and observational points of view. The book concludes with a focus on plasmas, covering different plasma parameters, quasilinear and nonlinear aspects of plasma waves, and various instabilities in hydrodynamics and plasmas.

High Resolution Imaging: Detectors and Applications

Swapan K. Saha Saha

Pan Stanford – 2015 – 600 pages


About this Book:

Interferometric observations need snapshots of very high time resolution of the order of (i) frame integration of about 100 Hz or (ii) photon-recording rates of several megahertz (MHz). Detectors play a key role in astronomical observations, and since the explanation of the photoelectric effect by Albert Einstein, the technology has evolved rather fast. The present-day technology has made it possible to develop large-format complementary metal oxide–semiconductor (CMOS) and charge-coupled device (CCD) array mosaics, orthogonal transfer CCDs, electron-multiplication CCDs, electron-avalanche photodiode arrays, and quantum-well infrared (IR) photon detectors. The requirements to develop artifact-free photon shot noise-limited images are higher sensitivity and quantum efficiency, reduced noise that includes dark current, read-out and amplifier noise, smaller point-spread functions, and higher spectral bandwidth. This book aims to address such systems, technologies and design, evaluation and calibration, control electronics, scientific applications, and results.

One of the fastest growing applications is signal sensing, especially wavefront sensing for adaptive optics and fringe tracking for interferometry, which is important for long-baseline optical interferometry. The coherence time of the atmosphere is a highly variable parameter. Depending upon the high velocity wind, it varies from <1 ms to 0.1 s. The exposure times are to be selected accordingly, to maximize the signal-to-noise ratio, as well as to freeze the fringe pattern. A large-format photon-counting system, which is an essential tool in the application of optical interferometric imaging, allows accurate photon centroiding and provides the dynamic range needed for measurements of source characteristics. The advent of high-quantum efficiency photon-counting systems vastly increases the sensitivity of high-resolution imaging techniques. Such systems raise the hope of making diffraction-limited images of objects as faint as ~15–16 m_v (visual magnitude).

This book deals with the fundamentals of the important aspects of high-resolution imaging, such as electromagnetic radiations, particularly, optical wavelengths and their distortions due to optical elements and Earth’s atmosphere while passing through a detector; semiconductor physics; lasers; fiber optics; photon-detection process; photodetectors; charge-transfer devices; photon-counting devices in visible wavelength; radiation detectors in infrared wavelengths; and detecting systems for high energies.

Worlds Beyond Our Own: The Search for Habitable Planets                  Sujan

Series: Astronomers’ Universe

Sengupta, Sujan

2015, XVI, 154 p. 29 illus., 24 illus. in color.

ISBN 978-3-319-09894-4


About this book

  • Presents the essential conditions required for the formation and evolution of life and on which planets these may be met
  • Provides an understanding of how rare the solar system, planet Earth and all life on it actually are
  • Teaches you about the different planets, stars and brown dwarfs
  • Entertaining and at the same time informative and thought provocative for curious minds

This is a book on planets: Solar system planets and dwarf planets. And planets outside our solar system – exoplanets. How did they form? What types of planets are there and what do they have in common? How do they differ? What do we know about their atmospheres – if they have one? What are the conditions for life and on which planets may they be met? And what’s the origin of life on Earth and how did it form? You will understand how rare the solar system, the Earth and hence life is.
This is also a book on stars. The first and second generation of stars in the Universe. But in particular also on the link between planets and stars – brown dwarfs. Their atmospheric properties and similarities with giant exoplanets.
All these fascinating questions will be answered in a non-technical manner. But those of you who want to know a bit more may look up the relevant mathematical relationships in appendices.

The Best Poster Award

The Best Poster Award for the year 2015 by Astronomical Society of India has been awarded to Ms. Supriya, H.D., Mr. Vaibhav Pant & Prasanna Deshmukh to the following disciplines, on the 33rd meeting of the Astronomical Society of India (ASI) hosted by the NCRA, Pune during Feb. 17-20, 2015.

  1. Sun and the Solar System : Ms. Supriya, H.D. and Mr. Vaibhav Pant
  2. Instrumentation : Prasanna Deshmukh

Congratulations to Ms. Supriya, H.D. and Mr. Vaibhav Pant & Prasanna Deshmukh.

Library, IIA, Bangalore

The K D Abhyankar Best thesis presentation award, for the year 2015 by Astronomical Society of India has been awarded to Dr. S.Krishna Prasad and Dr.Prashant Mohan on the 33rd meeting of the Astronomical Society of India (ASI) hosted by the NCRA, Pune during Feb. 17-20, 2015.

Congratulations to Dr. S.Krishna Prasad and Dr.Prashant Mohan

Full text of the thesis can be accessed from the following link,





Library, IIA, Bangalore

Justice Oak Award for Outstanding Thesis in Astronomy

The Justice Oak award for the best thesis, for the year 2014 by Astronomical Society of India has been awarded to Dr. Vemareddy Panditi, (INSPIRE faculty) on the 33rd meeting of the Astronomical Society of India (ASI) hosted by the NCRA, Pune during Feb. 17-20, 2015.

Congratulations to Dr. Vemareddy Panditi

Library, IIA, Bangalore

IIA, Library

Indian Institute of Astrophysics, Library

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