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Front cover page: A system of channels (centered at 20.53◦N, -118.49◦E) emanated from the graben near to Jovis Tholus region, Mars. MRO-CTX stereo pair derived DTM draped over the CTX image. Presence of multiple channels, braided-like channel network at the downstream end, and terraces suggests their plausible fluvial origin. Lava flow into the channels termini hindered the real extent of the channel network, b) an example of a streamlined island form ed within the channel and c) an example of a curvilinear island suggesting the possible flow direction. Inside back cover pages: Events at PRL Back cover page: Top Panel: Alpha Particle X-ray Spectrometer on-board Chandrayaan-2 rover [Mechanical Configuration] Middle Panel: AMS Laboratory Bottom Panels: Pre-monsoon and post-monsoon δ18O & d-excess maps of shallow groundwater in India. Compilation and Layout by: Office of the Dean, PRL. Published by: Physical Research Laboratory, Ahmedabad. Contact: Physical Research Laboratory Navrangpura Ahmedabad - 380 009, India Phone: +91-79-2631 4000 / 4855 Fax: +91-79-2631 4900 Cable: RESEARCH Email: [email protected] Website: https://www.prl.res.in/ PRL Annual Report 2016 { 2017 PRL Council of Management Three nominees from Govt. of India Professor U.R. Rao, Former Chairman, ISRO Chairman Antariksh Bhavan, New BEL Road Bengaluru-560231 Shri A. S. Kiran Kumar, Secretary, Member Department of Space, Govt. of India & Chairman, ISRO Antariksh Bhavan, Bengaluru-560231 Shri A. Vijay Anand, IRS, Additional Secretary & FA Member Department of Space, Govt. of India (Up to 31.08.2016) Antariksh Bhavan, Bengaluru-560231 Shri S. Kumaraswamy, Additional Secretary & FA Member Department of Space, Govt. of India (From 01.09.016 to 05.03.2017) Antariksh Bhavan, Bengaluru-560231 Mrs. Vandita Sharma, Additional Secretary & FA Member Department of Space, Govt. of India (From 06.03.2017) Antariksh Bhavan, Bengaluru-560231 A Nominee of Ahmedabad Education Society Shri Sanjay S. Lalbhai Member Ahmedabad-380009 A Nominee of Karmakshetra Education Foundation Shri Kartikeya V. Sarabhai, Director, Centre for Environment Education Member Ahmedabad-380054 A Nominee of Govt. of Gujarat, Gandhinagar-382010 Ms. Anju Sharma, I.A.S., Secretary, Higher and Technical Education Member Department of Education Director, Physical Research Laboratory, Ahmedabad-380009 Professor Utpal Sarkar Member (Ex-Officio, Up to 31.05.2016) Shri Tapan Misra Member (Ex-Officio, From 01.06.2016 to 09.02.2017) Dr. Anil Bhardwaj Member (Ex-Officio, From 10.02.2017) Registrar, Physical Research Laboratory, Ahmedabad-380009 Wg. Cdr. (Retd.) Vibhas Gupta Member Secretary (Ex-Officio, Up to 21.10.2016) Professor Jyotiranjan S. Ray Member Secretary (Ex-Officio, From 22.10.2016) Contents Director’s Foreword ....................................................... 1 Science Highlights ........................................................ 3 Awards and Honours ...................................................... 8 Human Resource Development ................................................. 11 Ph.D. Awarded [PRL students/project associates/employees] .................................. 12 Colloquia/Public Lectures by Visitors .............................................. 13 Conferences / Symposia / Workshops by PRL .......................................... 14 Invited Talks at Conferences / Symposia / Workshops ...................................... 15 Lectures at Universities / Institutions .............................................. 21 Science ............................................................. 24 Astronomy and Astrophysics ................................................ 24 Solar Physics ........................................................ 41 Planetary Sciences ..................................................... 52 Space and Atmospheric Sciences .............................................. 71 Geosciences ........................................................ 82 Theoretical Physics .....................................................100 Atomic, Molecular and Optical Physics ............................................106 Publications ...........................................................118 Journals ..........................................................118 Proceedings of Conference/ Symposia/ Workshops .....................................126 Books Edited / Review Articles / Other Publications ......................................130 Promotion of Basic Sciences, Official Language and Outreach Activities ............................131 Facilities and Services ......................................................135 Honorary Fellows ........................................................143 Honorary Faculty ........................................................144 PRL Faculty ...........................................................145 Audited Statement of Accounts .................................................149 Director's Foreword It’s a privilege for me to be entrusted with the responsibility of leading Other large programmes, like the GEOTRACES, an international the Physical Research Laboratory (PRL) as its Director in February programme which aims to improve the understanding of 2017. PRL is one of the premier science laboratories of the country biogeochemical cycles and large-scale distribution of trace elements conducting cutting-edge research in many domains of Astronomy and their isotopes in the marine environment, and IWIN a National and Astrophysics, Solar Physics, Space and Atmospheric Sciences, Programme aimed at oxygen and hydrogen isotopic characterization Atomic, Molecular and Optical Physics, Geosciences, Planetary of water sources to better understand hydrological processes in Sciences, and Theoretical Physics, as well as instrument design and atmospheric, surface and sub-surface domain are also making good mission payload development. progress. The optics group has successfully generated high power, airy beams, having peculiar properties such as self-acceleration, The mandate of the Laboratory is to carry out fundamental research, self-healing and non-divergence, tunable in the near-IR wavelength publish scientific papers in respective fields of expertise, and to design range. and develop appropriate instrumentation and experiments to enable realization of specific science goals. In the short time I have been here Observations using Astrosat and analysis of scientific data from I can see that this mandate is being upheld, as is apparent from the a variety of ground- and space-based telescopes and planetary, over two hundred research publications in high impact peer-reviewed solar and astronomy missions are being vigorously pursued in journals, and 12 PhD theses being produced in the last one year. PRL PRL. Field expeditions for collection of geological samples as well faculty members received invitations to give more than a hundred and as scientific ship-cruises for obtaining crucial marine samples are seventy lectures at Conferences, Symposia, Workshops, Universities continuously undertaken by PRL scientists. The samples undergo and other Academic Institutions. controlled-preparation and then analysed using different techniques and sophisticated experiments in the Laboratory. Research in Several new and vital scientific findings have been reported by PRL theoretical physics is focused on cosmology, matter under extreme scientists in the frontier areas of research mentioned above, which conditions, quark-gluon plasma, condensed matter and neutrino are detailed in this report. Very significant progress has been physics. Measurements are made using photometers, spectrometers, made in the initiatives on the large projects, like the Multi-Application radars, lidars, and other ground-based experiments to understand the Solar Telescope (MAST) at Udaipur Solar Observatory, which is unique processes in the lower, middle, and upper atmosphere, and now operational. A low-order adaptive optics system and stokes combining with the solar and interplanetary medium data to study the polarimeter has been successfully developed in-house. The PARAS space weather phenomena. spectrograph has now produced significant science that includes the discovery of a very rare three-body Eclipsing Binary system with the PRL coordinates the PLANEX and RESPOND programmes of the third body being a planet of 10 Jupiter mass orbiting at a separation of Department of Space and currently more than thirty research groups 1 Astronomical Unit. at various universities and research institutions are conducting scientific investigations through these programmes. PRL hosted about The establishment of a new 2.5m telescope facility at Mt. Abu is half-a-dozen national meetings in different disciplines of its research well underway, along with the development of back-end instruments. for scientific interactions and discussion. Research students of PRL A 1 MeV Accelerator Mass Spectrometer (AMS) for the detection have also organised conferences aimed at young researchers and of C, Al and Be isotopes has been installed in Thaltej campus of students with a good number of participation. PRL, enhancing the capability to contribute to the geochronological research. Work on establishing a facility for hard X-ray focusing As a part of societal commitment and capacity building, PRL optics has been initiated. Technology Development Program has contributes by providing highly skilled researchers through its strong been initiated to advance and support the new scientific ideas. The Doctoral and Post-Doctoral programmes.