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Project: Laser Interferometer Gravitational-Wave Observatory (LIGO) Prof. Somak Raychaudhury, Director, IUCAA, Pune LIGO-India: Ripples at the cutting edge of Science and Technology Abstract: • Within the last four years, epoch-making discoveries have been made by the Laser Interferometric Gravitational-Wave Observatories (LIGO) in the USA, with the discovery of gravitational waves, which have confirmed Einstein's formulation of the nature of gravitation, and has opened up a completely new way of studying the Universe. In collaboration with the USA, we are about the build the third such observatory in India (LIGO-India), which will become a crucial node of the worldwide network of these detectors. Building LIGO-India represents challenges not just to the scientific community, but poses unique challenges and opportunities for engineers and Indian industry, and promises a cutting-edge international facility on Indian soil for coming generations. I will introduce LIGO-India, and review its current status and the challenges ahead. About the Speaker: • Somak Raychaudhury is the Director of the Inter-University Centre for Astronomy and Astrophysics (IUCAA), Pune, and is the Chair of the TMT-India Project Management Board and the LIGO-India Science Management Board. He graduated from Presidency College, University of Calcutta, and University of Oxford, UK. After his PhD from the University of Cambridge, UK, he worked at the Harvard-Smithsonian Center for Astrophysics, USA, where he was part of the team that built the Chandra X-Ray Observatory for NASA. After faculty positions at IUCAA, Pune and at the University of Birmingham, UK, he was Dean of Sciences at Presidency University, Kolkata, before his current position. His research involves a wide range of topics in observational Cosmology and Astrophysics..

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Khag L October 2015
No. 104 KHAG L OCTOBER 2015 Editor : Editorial Assistant : Somak Raychaudhury Manjiri Mahabal ([email protected]) ([email protected]) A quarterly bulletin of the Inter-University Centre for Astronomy and Astrophysics ISSN 0972-7647 (An autonomous institution of the University Grants Commission) Available online at http://ojs.iucaa.ernet.in/ AT THE HELM... Professor Somak Raychaudhury has taken over as the Director, IUCAA, with effect from September 1, 2015 on my superannuation. He had his undergraduate education at Presidency College, Kolkata and the University of Oxford. For his Ph.D. he worked with Professor Donald Lynden- Bell at the Institute of Astronomy, University of Cambridge, UK, followed by post- doctoral fellowships at the Harvard- Smithsonian Center for Astrophysics, Cambridge, Harvard University, USA, and at the Institute of Astronomy. He was a faculty member at IUCAA during 1995 - 2000, and then at the University of Birmingham. In 2012, he joined the Presidency University, Kolkata, where he Somak Raychaudhury (Left) and Ajit Kembhavi was the Head of the Department of Physics and Dean, Natural Sciences. and will be greatly concerned Contents... with the University Programmes Reports of Past Events 1,2,3,4,5,6 Professor Raychaudhury’s research interests of IUCAA. Announcements 7 are in the areas of Galaxy Groups, Galaxy Welcome and Farewell 8 The IUCAA family looks forward Clusters and Large Scale Structures, and New Associates 9 carries out Observational work in the to his leadership in taking IUCAA Seminars 10 Optical, Radio and X-ray domains. Professor further along the path of progress. Visitors 10,11 Raychaudhury is deeply involved in Congratulations 11 Know Thy Birds 12 teaching of Astronomy and Public Outreach, Ajit Kembhavi KHAG L | IJmoc | No.
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Khagol Bulletin Apr 2017
No. 110 KHAG L APRIL 2017 Editor : Editorial Assistant : Aseem Paranjape Manjiri Mahabal ([email protected]) ([email protected]) A quarterly bulletin of the Inter-University Centre for Astronomy and Astrophysics Available online at http://ojs.iucaa.in/ ISSN 0972-7647 (An autonomous institution of the University Grants Commission) Follow us on our face book page : inter-university-centre for Astronomy and Astrophysics Contents... Reports of Past Events 1 to 10 Congratulations 2 Public Outreach Activities 8, 9 Workshop on Aspects of Gravity Farewell 10 Visitors 10, 11 and Cosmology Know Thy Birds 12 An international workshop on Aspects of Gravity and Cosmology was organised at IUCAA, involving some of the large surveys during March 7 - 9, 2017, covering a broad range of topics in classical and quantum aspects of currently in operation, such as the Dark gravitation and cosmology. The lively and eclectic academic programmes covered topics as Energy Survey and the search for diverse as emergent gravity, cosmo-biology, including a historical survey of observational cosmological neutral hydrogen. cosmology, as the subject progressed from the early days of IUCAA up to the latest results, Along with the academic programmes, one session concentrated on issues in Public Outreach in Science, including talks on contd. on page 2... On February 28, 2017, it was revealed that IUCAA Science Day celebrations was just as popular, be it a Sunday or a weekday! The celebrations of National Science Day (this time mid- week on a Tuesday) attracted numerous groups of students from in and around Pune, and as far as Parbhani (about 10 hours bus journey to Pune).
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Universe Became a Light-Filled State
Universe Became a Light-Filled State But the big mystery lies in how it actually emerged from the dark into its light- filled state, and that’s what researchers from the University of Iowa set out to solve. [25] A team of astronomers from the Inter University Centre for Astronomy & Astrophysics (IUCAA), and Indian Institute of Science Education and Research (IISER), both in Pune, India, and members of two other Indian universities, have identified a previously unknown, extremely large supercluster of galaxies located in the direction of constellation Pisces. [24] Enigmatic 'dark energy', thought to make up 68% of the universe, may not exist at all, according to a Hungarian-American team. [23] Astronomers in the US are setting up an experiment which, if it fails – as others have – could mark the end of a 30-year-old theory. [22] Russian scientists have discovered that the proportion of unstable particles in the composition of dark matter in the days immediately following the Big Bang was no more than 2 percent to 5 percent. Their study has been published in Physical Review D. [21] Researchers from the University of Amsterdam’s (UvA) GRAPPA Center of Excellence have just published the most precise analysis of the fluctuations in the gamma-ray background to date. [20] The Dark Energy Spectroscopic Instrument, called DESI, has an ambitious goal: to scan more than 35 million galaxies in the night sky to track the expansion of our universe and the growth of its large-scale structure over the last 10 billion years. [19] If the axion exist and it is the main component of Dark Matter, the very relic axions that would be bombarding us continuously could be detected using microwave resonant (to the axion mass) cavities, immersed in powerful magnetic fields.
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SITARE Workshop Nepal
SITARE Workshop Nepal Southampton -IUCAA Training for Astronomical Research and Education 13-15 June, 2018 Central Department of Physics, Tribhuvan University, Kathmandu, Nepal Program Day 10:00- 11:00- 11:30- 12:30- 14:00- 15:30- 16:00- (June, 2018) 11:00 11:30 12:30 14:00 15:00 16:00 17:00 13 BA T KS LUNCH SM T IJ 14 BA E KS LUNCH SR E IJ 15 SM A KS LUNCH SR A IJ Speakers BA: Binil Aryal, Tribhuvan University : Galaxy Evolution IJ: Ian Jones, Univ. of Southampton : Gravitational Wave Astronomy SM: Sanjit Mitra, IUCAA : Cosmic Microwave Background SR: Somak Raychaudhury, IUCAA : Observational Cosmology KS: Kanak Saha, IUCAA : Dynamics and Structure of galaxies Participants SN Name Affiliation Study/Teaching 1 Ajay Gopali CDP, TU, Kirtipur M.Sc. Student 2 Ajay Kumar Jha CDP, TU, Kirtipur Faculty (Astro) 3 Amrit Khadka CDP, TU, Kirtipur M.Sc. Student 4 Amrit Sedain CDP, TU, Kirtipur M.Sc. Student 5 Arjun Kumar Gautam (LOC) CDP, TU, Kirtipur Ph.D. Student 6 Aswin Thapa CDP, TU, Kirtipur M.Sc. Thesis Student 7 Barun DC CDP, TU, Kirtipur M.Sc. Student 8 Bhanu Prasad Sapkota (LOC) CDP, TU, Kirtipur Ph.D. Student 9 Bijaya Kharel CDP, TU, Kirtipur M.Sc. Student 10 Bijaya Sharma CDP, TU, Kirtipur M.Sc. Student 11 Bimal Bhandari PMC, Lalitpur M.Sc. Student 12 Binod Bhandari CDP, TU, Kirtipur M.Sc. Student 13 Daya Nidhi Chattkuli CDP, TU, Kirtipur Ph.D. Student 14 Debit Subedi CDP, TU, Kirtipur M.Sc. Student 15 Devendra Upadhaya Amrit College Faculty (Astro) 16 Devi Sapkota CDP, TU, Kirtipur M.Sc.
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Draft version November 15, 2018 Typeset using LATEX twocolumn style in AASTeX61 AGN FEEDBACK IN GALAXY GROUPS: A DETAILED STUDY OF X-RAY FEATURES AND DIFFUSE RADIO EMISSION IN IC1262 M. B. Pandge,1, ∗ S. S. Sonkamble,2 Viral Parekh,3 Pratik Dabhade,4,5 Avni Parmar,3 M. K. Patil,6 and Somak Raychaudhury7,8,9 1SERB Young Scientist,Dayanand Science College, Barshi Road Latur, 413 512, India. 2National center for Radio Astrophysics (NCRA), Tata Institute of Fundamental Research (TIFR), Pune 411 007, India. 3Raman Research Institute, C. V. Raman Avenue, Sadashivnagar, Bangalore 560080, India. 4Inter-University center for Astronomy and Astrophysics, Post Bag 4,Ganeshkhind, Pune-411 007, India. 5Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA, Leiden, Netherlands. 6School of Physical Sciences, Swami Ramanand Teerth Marathwada University Nanded, 431 606, India. 7Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune-411 007, India. 8Department of Physics, Presidency University, 86/1 College Street, Kolkata 700073, India. 9School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK. (Received July 1, 2016; Revised September 27, 2016; Accepted November 15, 2018) Submitted to ApJ ABSTRACT This paper reports a systematic search of X-ray cavities, density jumps and shocks in the inter-galactic environment of the galaxy group IC 1262 using Chandra, GMRT and VLA archival observations. The X-ray imaging analysis reveals a pair of X-ray cavities on the north and south of the X-ray peak, at projected distances of 6.48kpc and 6.30 kpc respectively. Total mechanical power contained in both these cavities is found to be 12.37 1042 erg s−1, ∼ × and compares well with the X-ray luminosity, within the cooling radius, measured to be 3.29 1042 erg s−1, ∼ × suggesting that the mechanical power injected by the central AGN eﬃciently balances the radiative loss.
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IUCAA, Passed Away on February 6, 2018 at the Age of 82
No. 114 APRIL 2018 Homage to Professor Donald Lynden-Bell Professor Donald Lynden-Bell, FRS, one of the world's most distinguished scientists and an Honorary Fellow of IUCAA, passed away on February 6, 2018 at the age of 82. He was a frequent visitor at IUCAA and a life-long well-wisher of the institute. In his memory, and as a celebration of his life and his invariably cheerful scientific attitude, a condolence meeting was held at IUCAA on February 8, 2018. Several IUCAA academics recounted their most treasured memories of Professor Lynden- Bell at this gathering. This issue of Khagol shares some of these memories of Professor Lynden-Bell and his long association with IUCAA, with contributions from Professors Naresh Dadhich, Ajit Kembhavi and T. Padmanabhan. [1936 - 2018] Reports of Past Events 1 to 8 Colloquia, Seminars, Congratulations 4 Farewell 6 Public Outreach Activities 9 to 18 Visitors 19, 20 No. 114 - April 2018 01 Ever curious and playful with ideas Naresh Dadhich Donald's piercing eyes, always bearing a poignant sparkle of for two terms, and he had been visiting IUCAA quite regularly. seeing something new and insightful, as well as teasingly It was warmly acknowledged in electing him the Honorary playful, are what the most fascinating and enchanting picture I Fellow. have of him. I had first met him in 1986 in his office when he was about to leave to give lecture in a summer school. We had There are two profound things I learnt from him, one keep on a warm hand shake and announced that he would throw me staring at equation slowly you will understand it, and second out in 10 minutes.
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Indian Science in Indian Media Highlights of ISW Stories - July 2017
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DM Bose Memorial Lecture 2018
BOSE INSTITUTE K O L K A T A GOING TO SPACE TO OBSERVE THE SKY Director and Prof. Somak Raychaudhury Staff Members of Bose Institute Director request the pleasure of your company at the Inter-University Centre for Astronomy and Astrophysics Ganeshkhind, Post Bag 4, Pune - 411 007 D. M. Bose Memorial Lecture 2018 raditionally the sky has been observed through on optical telescopes, first with the eye, and then 26th November, 2018 at 3.00 p.m. Twith the help of photographic and solid-state detectors. However, our atmosphere prevents most of on the occasion of the the radiation, e.g. Infrared, Ultraviolet, X-rays and 134th Birthday of Prof. Debendra Mohan Bose Gamma-rays and charged particles, from celestial sources, from reaching the Earth's surface. Early Speaker research by Professor D M Bose involved observing Prof. Somak Raychaudhury cosmic rays from Darjeeling and surroundings, and Director Inter-University Centre for Astronomy and Astrophysics similar research on high-energy photons were carried Ganeshkhind, Post Bag 4, Puné 411 007 out from aircraft and balloons. Now we have observatories in orbit. I will give an account of how Titled some essential knowledge of the Universe cannot be Going to Space to Observe the Sky observed from the ground, and needs to be accessed Prof. S. C. Roy from observatories at high altitude, or in orbit, and what Member, National Commission of History of Science, INSA major challenges we face in observing from Space. has kindly consented to preside over the programme. Venue Prof. Sujoy Kr. Das Gupta Bose Institute Lecture Hall Director (Officiating) 93/1, A P C Road, Kolkata 700 009 Prof.
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Nature India Annual Volume 2020
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Large-Scale Structures in the Universe
Large-Scale Structures in the Universe A team of astronomers from the Inter University Centre for Astronomy & Astrophysics (IUCAA), and Indian Institute of Science Education and Research (IISER), both in Pune, India, and members of two other Indian universities, have identified a previously unknown, extremely large supercluster of galaxies located in the direction of constellation Pisces. [24] Enigmatic 'dark energy', thought to make up 68% of the universe, may not exist at all, according to a Hungarian-American team. [23] Astronomers in the US are setting up an experiment which, if it fails – as others have – could mark the end of a 30-year-old theory. [22] Russian scientists have discovered that the proportion of unstable particles in the composition of dark matter in the days immediately following the Big Bang was no more than 2 percent to 5 percent. Their study has been published in Physical Review D. [21] Researchers from the University of Amsterdam’s (UvA) GRAPPA Center of Excellence have just published the most precise analysis of the fluctuations in the gamma-ray background to date. [20] The Dark Energy Spectroscopic Instrument, called DESI, has an ambitious goal: to scan more than 35 million galaxies in the night sky to track the expansion of our universe and the growth of its large-scale structure over the last 10 billion years. [19] If the axion exist and it is the main component of Dark Matter, the very relic axions that would be bombarding us continuously could be detected using microwave resonant (to the axion mass) cavities, immersed in powerful magnetic fields.
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1St Cover Sep 2017 Issue.Indd
SPECTRUM Indian science and technology globally. Simplifying complex science for the lay people is his forte.” Noted Science In 2010, Pallava Bagla was awarded the ‘David Perlman Award for Excellence in Science Journalism’ given by the American Geophysical Union (AGU), Washington DC, for Communicator his landmark writings which exposed the Himalayan glacier blunder by the UN’s Intergovernmental Panel on Climate Change (IPCC). Pallava Bagla His work on India’s first mission to the moon, Chandrayaan-1 in 2008 and to Mars-Mangalyaan in 2013 has bags INSA been greatly applauded. He is also author of several books including Reaching for the Stars: India’s Journey to Mars and Beyond. His latest Prize book is titled Bridging the Communication Gap in Science and Technology: Lessons from India published by Springer. Pallava Bagla receiving the award. Left to right: Prof Anurag Sharma of INSA, A well-known face on television, Science Editor, New Delhi Pallava Bagla science writer (in blue shirt and shawl) and Prof Ajay Sood, President, Indian National Science Academy Television, Pallava Bagla has been awarded the prestigious Indira Gandhi Prize for Popularisation of Science for the year 2017. The prize is given by the Indian National Science Academy (INSA), New Delhi – an apex body of Indian scientists. This coveted award comes to him in the birth centenary Awareness Alone year of former Prime Minister Mrs Indira Gandhi famous in scienti c circles for having mandated the 1974 nuclear not Enough to explosion at Pokhran. More than a thousand fellows of INSA collectively choose Address Lifestyle once every three years the best populariser of science in the country.
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No. 122 April 2020 Aseem Paranjape Manjiri Mahabal ([email protected]) ([email protected]) Available online at http://publication.iucaa.in/index.php/khagol Follow us on our face book page : inter-University Centre for Astronomy and Astrophysics The5thAsiaPacificSolarPhysicsMeeting Reports of Past Events 1-12 Welcome and Farewell 1,3,7 Congratulations 3 Colloquia and Seminars 8 Public Outreach Activities 12-14 Visitors 15-16 Welcome... AdditiontoIUCAACorefaculty The 5th Asia Paciﬁc Solar Physics Meeting was hosted at the Inter-University Centre for Astronomy and Astrophysics (IUCAA) Pune during February 3 - 7, 2020. The meeting was jointly organised by IUCAA and the Indian Institute for Science Education and Research (IISER), Pune. The conference was co- sponsored by the Centre for Excellence in Space Science India (CESSI), IISER- Kolkata; Indian Institute of Astrophysics (IIA), Bengaluru; Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital; Indian Institute of Science (IISc), Bengaluru; and the Indian Space Research Organization (ISRO), Debarati Chatterjee Bengaluru. ... See page 3 ... Contd. on page 2 No. 122 - April 2020 1 Somak Raychaudhury, Director, IUCAA inaugurated the meeting. About 150 scientists from different countries around the globe attended the meeting. The countries represented were Japan, Australia, South Korea, USA, UK, Germany, Russia. The colleagues from China could not participate in the meeting in person, due to the outbreak of Covid-19. However, a few colleagues from China presented their results through online multi-media. The complete meeting was live-streamed for enabling the colleagues to join remotely. The meeting discussed all aspects of the Solar Astrophysics starting from Solar Dynamo to Solar wind and heliosphere.
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