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Cometary Grains

Cometary Grains

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Cometary Grains
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<strong>Seminar of the School of Physical Sciences -------------------------------------------------</strong> <strong>Title: Cometary Grains</strong> <strong>Speaker:</strong> Asoke K. Sen (Assam University, Silchar) Date: <strong>May 18, 2016 </strong>(Wednesday) <strong>Abstract:</strong> Comets are being studied for last several decades using ground based telescopes , to understand their orbits, gas and dust contents and other dynamical properties. Since the comets are believed to contain the most pristine materials of our solar system out of which Sun and other planets were born some 4.6 billion years ago, the above studies help us to understand the origin and evolution of our solar system. The dust particles which are released from the comet nucleus, contain most of these pristine materials. These particles scatter the solar radiation and are responsible to give the comets a bright spectacular appearance. Such scattered radiations are studied through photometry and polarimetry by the ground based telescopes to understand the properties of cometary dust and also the scattering processes in general. In addition, in recent years a number spacecrafts had flown very close to some of the comets and made very interesting in situ measurements on cometary dusts. These spacecraft measurements, together with the ground based observations on cometary dusts are providing us now, new insights into the processes which led to the formation of the comets and other members of the solar system. Such findings from our recent studies on cometary dusts will be discussed.

A warm welcome to the modified and updated website of the Centre for East Asian Studies. The East Asian region has been at the forefront of several path-breaking changes since 1970s beginning with the redefining the development architecture with its State-led development model besides emerging as a major region in the global politics and a key hub of the sophisticated technologies. The Centre is one of the thirteen Centres of the School of International Studies, Jawaharlal Nehru University, New Delhi that provides a holistic understanding of the region.

Initially, established as a Centre for Chinese and Japanese Studies, it subsequently grew to include Korean Studies as well. At present there are eight faculty members in the Centre. Several distinguished faculty who have now retired include the late Prof. Gargi Dutt, Prof. P.A.N. Murthy, Prof. G.P. Deshpande, Dr. Nranarayan Das, Prof. R.R. Krishnan and Prof. K.V. Kesavan. Besides, Dr. Madhu Bhalla served at the Centre in Chinese Studies Programme during 1994-2006. In addition, Ms. Kamlesh Jain and Dr. M. M. Kunju served the Centre as the Documentation Officers in Chinese and Japanese Studies respectively.

The academic curriculum covers both modern and contemporary facets of East Asia as each scholar specializes in an area of his/her interest in the region. The integrated course involves two semesters of classes at the M. Phil programme and a dissertation for the M. Phil and a thesis for Ph. D programme respectively. The central objective is to impart an interdisciplinary knowledge and understanding of history, foreign policy, government and politics, society and culture and political economy of the respective areas. Students can explore new and emerging themes such as East Asian regionalism, the evolving East Asian Community, the rise of China, resurgence of Japan and the prospects for reunification of the Korean peninsula. Additionally, the Centre lays great emphasis on the building of language skills. The background of scholars includes mostly from the social science disciplines; History, Political Science, Economics, Sociology, International Relations and language.

Several students of the centre have been recipients of prestigious research fellowships awarded by Japan Foundation, Mombusho (Ministry of Education, Government of Japan), Saburo Okita Memorial Fellowship, Nippon Foundation, Korea Foundation, Nehru Memorial Fellowship, and Fellowship from the Chinese and Taiwanese Governments. Besides, students from Japan receive fellowship from the Indian Council of Cultural Relations.