Khagol _112 _October 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/ Surendran, IIA, Bengaluru; Rajalakshmi T. R., Mahatma Gandhi University, Kottayam; Vithal Tilvi, Arizona State University, USA; Alex Vano-Vinuales, Cardiff University, UK; a n d F e d e r i c o V i n c e n t e l l i , B r e r a Astronomical Observatory, Italy. November 2017 Chetan Bavdhankar, Savitribai Phule Pune University; Sudipta Bhattacharjee, Jadavpur University, Kolkata; Nabajit Chakravarty, Meteorological Office, Imphal; Kishore Iyer, IISER, Thiruvananthapuram; Pravir Kumar, IISER, Bhopal; Sneha Prakash M., Christ University, Bengaluru; Helen Mason, University of Cambridge, UK; Ablu V, ModernCollege, Manipur;Abhishek Parida, Jamia Millia Islamia, Delhi; Shishir Sankhyayan, IISER, Pune; Ramkishor Sharma, University of Delhi; Alkendra Singh, Banaras Hindu University, Varanasi; Mudit Srivastava, Physical Research Laboratory, Ahmedabad; Vipin Sudevan, IISER, Bhopal; Sharanya Sur, IIA, Bengaluru; P u l a t Ta d j i mu r a t o v, U l u g h B e g Astronomical Institute, Uzbekistan; and Arun Thampan, St. Joseph’s College, Bengaluru. December 2017 DharamVir Ahluwalia, IIT, Guwahati; Gazi Ameen Ahmed, Tezpur University; Md. Sabir Ali, Jamia Millia Islamia, Delhi; Arunima Banerjee, IISER, Tirupati; Suresh Chandra, Amity University, Noida; Abhishek Das, NISER, Bhubaneswar; Debabrata Deb, IIEST, Howrah; Broja Gopal Dutta, Rishi Bankim Chandra College, West Bengal; Poshak Gandhi, University of Southampton, UK; Sushant Ghosh, Jamia Millia Islamia, Delhi; Tathagata Ghosh, IIT, Kh a r a gpu r ; K i s ho r e I ye r, I I SER , Thiruvananthapuram; Neal Steven Katz, University of Massachusetts, USA; Rukaiya Khatoon, Tezpur University; Shibesh Kumar, Jamia Millia Islamia, Delhi; Joseph Kuruvilla, University of Bonn, Germany; Sunil Maharaj, University of KwaZulu- Natal, Durban, South Africa; Bivudutta Mishra, BITS-Pilani, Hyderabad; Debasish Mondal, University of Calcutta, Kolkata; Soumen Mondal, Jadavpur University, Kolkata; Sailo Mukherjee, Ex-North Bengal University, Darjeeling; Rahul Nigam, BITS- Pilani, Hyderabad; Iossif Papadakis, University of Crete, Greece; B. C. Paul, North Bengal University, Darjeeling; Adarsh Ranjan, Institute of Astrophysics, France; Subharthi Ray, University of KwaZulu- Natal, Durban, South Africa; Mohit Kumar Sharma, Amity University, Noida; Ranjan Sharma, P. D. Women’s College, West Bengal; Yuri Shtanov, Bogolyubov Institute for Theoretical Physics, Ukraine; H. S. Sunil Sinha, IIT Madras, Chennai; Aneesh Sivasankaran, IIT, Kharagpur; Esha Swaroop, BITS-Pilani, Goa; Lekshmi T., Central University of Tamil Nadu, Thiruvarur; Alexei Toporensky, Sternberg Astronomical Institute, Moscow; Paniveni Udayashankar, NIE Institute of Technology, Mysore; Murli Manohar Verma, Lucknow University; Aditya Vidhate, BITS-Pilani, Hyderabad; Amit Vikram, IIT Madras, Chennai; R. G. Vishwakarma, Universidad Autonoma De Zacatecas, Mexico; Rahul Kumar Walia, Jamia Millia Islamia, Delhi; and Khabbab Zakaria, Jadavpur University, Kolkata. LongTermVisitors Rajesh Nayak, IISER, Kolkata; Pramod Pawa r, Swami Rama n a nd Te e r t h Marathwada University, Nanded; and Prasant Samantray. | KHAG L | No. 112 - OCTOBER 2017 | 16 Visitors Expected October 2017 Oluwashina Adegoke, IISc, Bengaluru; Tomaso Belloni, INAF Brera, Italy; Maitraya Bhattacharyya, IISER, Kolkata; K. G. Biju, W.M.O. Arts and Science College, Kerala; Mahasweta Biswas, IIEST, Kolkata; Swadesh Chand, Guru Ghasidas Central University, Bilaspur; Payaswinee Dhoke, Dharampeth M.P. Deo Memorial Science College, Nagpur; Savithri Ezhikode, St. Thomas College, Kozhencherri; Shounak Ghosh, Indian Institute of Engineering, Science and Technology, Kolkata; Yaghoub Heydarzade, Azarbaijan Shahid Madani University, Iran; David Hilditch, University of Lisbon, Portugal; Swetha Indira, Mahatma Gandhi University, Kottayam; Asif Iqbal, RRI, Bengaluru; Dhairyashil Jagadale, Hyper- Ions Research Labs, Pune; Reju Sam John, Pondicherry University; Kanti Jotania, M. S. University of Baroda, Vadodara; Y. Rohin Kumar, University of Delhi; Arun Kulkarni, BITS-Pilani, Goa; Shahnawaz Malik, University of Kashmir, Srinagar; Nairwita Mazumder, Washington State University, USA; Mahadev Pandge, Dayanand Science College, Latur; Devraj Pawar, R. J. College, Mumbai; Khun Sang Phukon, IIT, Kanpur; B.S. Ratanpal, M.S. University of Baroda, Vadodara; Luiz Felippe Rodrigues, University of Newcastle, UK; Vishant Shah, Neotech College of Applied Science and Research, Vadodara; Arijit Sharma, Helmholtz Institute Mainz, Germany; Swarnim Shashank, Centre for Excellence in Ba s i c Sc i enc e s , Mumba i ; Av i na sh