IUCAA - Khagol # 111 - July 2017

Khagol (the Celestial Sphere) is the quarterly bulletin of We welcome your feedback at the following address: IUCAA, Post Bag 4, Ganeshkhind, Pune 411 007, India. Phone : (020) 2569 1414; 2560 4100 Fax : (020) 2560 4699 email : publ@iucaa.in Web page : http://www.iucaa.in/ | KHAG L | | No. 111 - JULY 2017 12 Visitors (April - June 2017) Oluwashina Adegoke; Chaitanya Afle; Sanaa Agarwal; S. Aranya; Anil Nagorao Ardad; Kalyani Bagri; Amitava Bandyopadhyay; Bidisha Bandyopadhyay; Tanwi Bandyopadhyay; Srikumar Banerjee; Pranav Pramodrao Bardapurkar; Naseer Iqbal Bhat; Bidushi Bhattacharya; Parag Bhattacharya; Yashpal Bhulla; K.G. Biju; Rajib Biswas; Ritabrata Biswas; Mary Bosco; Koushik Chakraborty; Subenoy Chakraborty; Sumanta Chakraborty; Swadesh C h a n d ; R a m e s h C h a n d r a ; G a a y a t r i Chandrasekharan; Ritaban Chatterjee; Rwitika Chatterjee; Suchetana Chatterjee; Asis Kumar Chattopadhyay; Tanuka Chattopadhyay; Raghavendra Chaubey; Virander S. Chauhan; Mahathi Chavali; Sheetal Chopade; Rudrani Kar Chowdhury; Abhishek Das; Sudip Das; Sudipta Das; Abhirup Datta; Duggal Dayal; Ujjal Debnath; Karishma Dhanmeher; Payaswinee Dhoke; Bikash Dinda; Broja Gopal Dutta; Jayanta Dutta; Sandip Dutta; Savithri Ezhikode; Didier Fraix-Burnet; Samskruthi Ganjam; Sharad Gaonkar; Ritesh Ghosh; Shounak Ghosh; Tathagata Ghosh; Gourab Giri; Rupjyoti Gogoi; Pranjupriya Goswami; Shivappa B. Gudennavar; Labanya Kumar Guha; Sarbari Guha; Ajesh Gulati; Anshu Gupta; Pawan Kumar Gupta; Priya Hasan; Tanvir Hussain; K. Indulekha; Bhola Ishwar; Bala Iyer; Binu Padiyanickal Jacob; Joe Jacob; Andreas Jaeger; Dhairyashil Jagadale; Deepak Jain; Rishabh Jain; Abdul Jaleel; Marykutty James; K. Jeena; Sharda Keshav Jogadand; Reju Sam John; Sindu Jones; Reetika Joshi; Kanti Jotania; Anusree K.G.; Atish Kamble; Dinakar Kanjilal; Nisha Narasinha Kelkar; Ram Kishor; Akshay Pramod Kulkarni; Abhinav Kumar; Ajai Kumar; Pravir Kumar; Rajesh Kumar; B. Venkatta Kumaran; Badam Singh Kushvah; Ashu Kushwaha; Sathyanarayanan Kuzhikkatt; Tjonnie Guang Feng Li; Sreelakshmi M.; Mahith Madhanakumar; Tarun Maity; Anwesh Majumder; Shiva Kumar Malapaka; Jui Mallik; Soma Mandal; Titus Mathew; Meena; Irom Ablu Meitei; Bivudutta Mishra; Anupama Mohanan; Soumen Mondal; Surhud More; Ankan Mukherjee; Sagnick Mukherjee; Sajal Mukherjee; Chaitrali Shashikant Mulay; PramodG. Musrif; MarcelloMusso; Sujatha N.V.; Sachindra Naik; K. Rajagopalan Nair; K.C. Nair; Hemwati Nandan; Dibyendu Nandi; Swagata Nandi; Rathnasree Nandivada; Hasti Mohammadsadegh Nateghi; Nilam Navale; Arabinda Nayak; Rajaram Nityananda; Angel Priyana Noel; Madhavi Pachauri; Sreejith Padinhatteeri; Biswajit Pandey; Mahadev Pandge; P.N. Pandita; Ajith Parameswaran; RutuM. Parekh; Abhishek Parida; K.D. Patil; Raagini Patki; B.C. Paul; Prasenjit Paul; Devraj Pawar; Bryan Penprase; Ninan Sajeeth Philip; Khun Sang Phukon; Jayadev Pradeep; Anirudh Pradhan; A.U. Preetha; Marina Prokopieva; Mizanur Rahaman; Aparna Raj; M. Xavier James Raj; Mainpal Rajan; Akshay Rana; Vivek Ashok Rane; Nisha Rani; Ajay Ratheesh; Pratik Ray; S.K. Ray; Saibal Ray; Mahendra Kumar Richharia; Subhojit Roy; Agniva Roychowdhury; Rajesh S.R; Anirban Saha; Tathagata Saha; Sunder B. Sahayanathan; Lekhram Sahu; Saumyadip Samui; Shishir Sankhyayan; Varun Saraswat; Sudipta Sarkar; Padmanabh Shrihari Sarpotdar; Sathyanarayanan; B.S. Sathyaprakash; Seema Satin; Peter Saulson; Anjan Ananda Sen; Asoke Kumar Sen; Somasri Sen; Zahir Ahmad Shah; Nigar Shaji; K.N. Shanti; Kaushal Sharma; Ramkishor Sharma; Dibyendu Shee; Hrishikesh Shetgaonkar; Anjani Kumar Shukla; Leo Singer; Aheibam Keshwarjit Singh; K.P. Singh; Manju Singh; Raghvendra Singh; Ajit Kumar Sinha; Aneesh Sivasankaran; Satish Sonkamble; Tamanapalli Sravan; Sindhu Sri Sravya; A.G. Sreejith; K. Sriram; Arun Srivastava; Kashika Srivastava; S. Sudhagar; Abhinav Sundar; Avinash Surendran; Lekshmi T.; Bivitha T. K.; Prakash Kumar Thakur; Rutwik Thengodkar; Rishikesh Dutta Tiwary; S.K. Tripathy; Santanu Tripathy; Vinutha Tummala; Anurag Tyagi; Anisul Ain Usmani; Prajwal V.P.; Hum Chand Varma; Mahendra Kumar Verma; Aditya Vidhate; Vinod; M. Vivek; GrahamWalker; and FauzanZaid. July 2017 Sanaa Agarwal, BITS-Pilani; Srikumar Banerjee, BARC, Mumbai; Chetan Bavdhankar, S.P. Pune University; Priya Bharali, Gauhati University; Debasish Borah, IIT, Guwahati; Mridusmita Buragohain, Tezpur University; Suresh Chandra, Amity University, Noida; Abhishek Das, NISER, Bhubaneshwar; Abhirup Datta, IIT, Indore; Kanan Kumar Datta, Presidency University, Kolkata; Savithri Ezhikode, St. Thomas College, Kozhencherry; Sunandan Gangopadhyay, IISER, Kolkata; Prachi Garella, Amity University, Noida; Akash Garg, Jamia Millia Islamia, New Delhi; Pranjupriya Goswami, Tezpur University; Umananda Goswami, Dibrugarh University; Anil Kumar Gourishetty, IIT, Roorkee; Anshu Gupta, Mumbai; Sitha K. Jagan, University of Calicut; Sandhya Jagannathan, Sharda Jogadand, Swami Ramanand Teerth Marathwada University, Visitors Expected Nanded; Shivaraj Kandhasamy, LIGO, Livingston, USA; Abhisek Mohapatra, NIT, Bhubaneswar; Remya Nair, University of Kyoto; Sabyasachi Pal, Indian Centre for Space Physics, Kolkata; Rutu Parekh, Dhirubhai Ambani Institute of Information and Communication Technology, Gandhinagar; Raagini Patki, IISER, Pune; Pramod Pawar, Swami Ramanand Teerth Marathwada University, Nanded; Mainpal Rajan, Physical Research Laboratory, Ahmedabad; Amit Reza, IIT, Gandhinagar; Ashok Rupner, IISER, Pune; Gautam Saikia, Tezpur University; Prasant Samantray; Samyadip Sarkar, Jadavpur University, Kolkata; Rathin Sarma, Hojai College, Assam; Anjan Ananda Sen, Jamia Millia Islamia, New Delhi; Anand Sengupta, IIT, Gandhinagar; T.R. Seshadri, University of Delhi; Zahir Ahmad Shah, University of Kashmir, Srinagar; Aishawnnya Sharma, Tezpur University; Mohit Kumar Sharma, Amity University, Noida; Ramkishor Sharma, University of Delhi; Umesh Sharma, GLAUniversity, Mathura; Hrishikesh Shetgaonkar, BITS, Pilani; Kalpana Shukla, GLAUniversity, Mathura;Alka Singh, GLA University, Mathura; Avneet Singh, Max-Planck Institute for Gravitational Physics, Germany; G. P. Singh, Visvesvaraya National Institute of Technology, Nagpur; Prithvi Raj Singh, A.P.S. University, Rewa; S. Sunil, Institute for Plasma Research, Ahmedabad; Lekshmi T., Central University of Tamil Nadu, Thiruvarur;Amit Kumar Tamrakar, Pandit Ravishankar Shukla University, Raipur; Paniveni Udayashankar, NIE Institute of Technology, Mysore; Mahendra Kumar Verma, Pandit Ravishankar Shukla University, Raipur; and NaveenYadav, IISc, Bengaluru. August 2017 Bobomurat Ahmedov, Ulugh Beg Astronomical Institute, Tashkent; Juraev Bakhtinur, Uzbekistan National University, Uzbekistan; Debabrata Deb, City College, Kolkata; Safiqul Islam, Harish- Chandra Research Institute, Allahabad; Kanti Jotania, The M. S. University of Baroda, Vadodara; Abhijit Mandal, Bankura University; K. Rajagopalan Nair, CUSAT, Kochi; Anvar Shukurov, University of Newcastle, U.K.; and Bal Krishna Yadav, University of Lucknow. September 2017 Abdul Aziz, IIEST, Shibpur; Sourav Roy Chowdhury, City College, Kolkata; Shyam Das, P. D. Women’s College, Jalpaiguri; K. P. Harikrishnan, The Cochin College, Kochi; Pravir Kumar, IISER, Bhopal; Iftikar Sardar, Prabhu Jagatbandhu College, Howrah; Ranjan Sharma, P. D. Women’s College, Jalpaiguri; and Murli Manohar Verma, LucknowUniversity. LongTermVisitors Rajesh Nayak, IISER, Kolkata; Pramod Pawar, Swami Ramanand Teerth Marathwada University, Nanded; andPrasant Samantray.