Active galaxies and supermassive black holes
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Welcome to the talk "Active galaxies and supermassive black holes" by Dhruba Saikia, Professor from Tata Institute of Fundamental Research in India.
Galaxies, which are the fundamental building blocks of the Universe, are often much more than the billions of stars and the medium between them, which are all embedded in massive dark matter halos. The galaxies usually harbour supermassive blackholes in their nuclei with masses ranging from millions to billions of solar masses. These active galactic nuclei are responsible for some of the most energetic phenomena in the Universe with luminosities up to a hundred trillion times that of our Sun. They can eject jets of relativistic plasma over millions of light years, spanning a distance of up to about 200 times the size of our own Galaxy, the Milky Way, at nearly the velocity of light. In this public talk, Saikia will introduce you to this fascinating world of active galaxies and our current understanding of these objects.
Professor Dhruba Saikia is an astronomer specialised in active galaxies and radio astronomy, from the Tata Institute of Fundamental Research in India. He has made important contributions in our understanding of active galaxies (galaxies with supermassive black holes in the centre and starburst galaxies). He has spent most of his career in India, and has also been engaged in teaching and/or research at the Jodrell Bank Observatory in England, the National Radio Astronomy Observatory in the USA, and held positions in Canada, Australia and Germany. He is passionate about the radio Universe and active galaxies, and also about science education.
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Coffee/tea are served. Everyone is welcome!
The talk will be streamed. You can watch the stream at Realfagsbiblioteket YouTube-channel.
Organisers
Institute of Theoretical Astrophysics and The Science Library
Galaxies, which are the fundamental building blocks of the Universe, are often much more than the billions of stars and the medium between them, which are all embedded in massive dark matter halos. The galaxies usually harbour supermassive blackholes in their nuclei with masses ranging from millions to billions of solar masses. These active galactic nuclei are responsible for some of the most energetic phenomena in the Universe with luminosities up to a hundred trillion times that of our Sun. They can eject jets of relativistic plasma over millions of light years, spanning a distance of up to about 200 times the size of our own Galaxy, the Milky Way, at nearly the velocity of light. In this public talk, Saikia will introduce you to this fascinating world of active galaxies and our current understanding of these objects.
Professor Dhruba Saikia is an astronomer specialised in active galaxies and radio astronomy, from the Tata Institute of Fundamental Research in India. He has made important contributions in our understanding of active galaxies (galaxies with supermassive black holes in the centre and starburst galaxies). He has spent most of his career in India, and has also been engaged in teaching and/or research at the Jodrell Bank Observatory in England, the National Radio Astronomy Observatory in the USA, and held positions in Canada, Australia and Germany. He is passionate about the radio Universe and active galaxies, and also about science education.
___________________________
Coffee/tea are served. Everyone is welcome!
The talk will be streamed. You can watch the stream at Realfagsbiblioteket YouTube-channel.
Organisers
Institute of Theoretical Astrophysics and The Science Library
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Where is it happening?
UiO : Realfagsbiblioteket, Moltke Moes vei 35,Oslo, Norway
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Host or PublisherUiO : Realfagsbiblioteket
