Ashesh Prosad Mitra

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Ashesh Prosad Mitra
A. P. Mitra
Born (1927-02-21)February 21, 1927
Kolkata, West Bengal
Died September 3, 2007(2007-09-03) (aged 80)
New Delhi
Citizenship Indian
Nationality Indian
Known for Radio & Space Physics
Notable awards Padma Bhushan, 1987

Ashesh Prosad Mitra, FRS (21 February 1927 - 3 September 2007) was a physicist who headed the National Physics Laboratory in Delhi, India and was the Director General of the Council of Scientific and Industrial Research (CSIR). He is primarily known for his work on environmental physics.


Mitra studied at the Bangabasi College, an affiliated college of the University of Calcutta.

He was the director of the National Physical Laboratory (NPL) from 1982 to 1986 and the Director General of the Council of Scientific and Industrial Research (CSIR) from 1986 to 1991.[1]

He died at New Delhi in September, 2007.[2]


Radio & Space Physics was his area of specialization. He performed major work in the field of earth's near-space environment, through group based and space techniques. He worked on cosmic radio noise for studying the upper atmosphere led to a series of discoveries in ionosphere, solar physics and cosmic rays.

Honours and awards[edit]

  • He was awarded the Shanti Swarup Bhatnagar Prize for Physical Science in 1968. The citation read: "Dr Mitra is one of the acknowledged authorities on ionosphere and on some aspects of space research. His pioneering work on the use of cosmic radio noise for upper atmosphere studies resulted in a whole series of scientific discoveries in ionosphere, solar physics and cosmic rays. He has carried out comprehensive studies on the ionospheric effects of solar flares and has established one of the most extensive radio flare systems at the National Physical Laboratory. He developed an atmospheric model from observations of satellite drag and initiated new D region rocket experiments. Dr Mitra’s work on ion and neutral chemistry in the upper atmosphere, especially on the minor constituent nitric oxide, provided the basis for much of our present knowledge about the lower ionosphere. He has contributed substantially to the establishment and operation of the International Spacewarn System and the International Ursi-gramme and World Day Service. [3]
  • He was a Foreign Fellow of Bangladesh Academy of Sciences [4]
  • He was recipient of the Padma Bhushan award in the year 1987.[5]
  • He was elected a Fellow of the Royal Society of London in 1988.[6]


External links[edit]