Webinar 12 A course of "Space Weather"

Updated on
Talk 1 Ooty Radio Telescope,,,,,, Observations PPT and VIDEO
Talk 2 Three-dimensional Solar Wind PPT and VIDEO
Talk 3 Coronal Mass.... Interaction Regions PPT and VIDEO
Talk 4 Near-Earth Space........Solar Transients  PPT and VIDEO
Space Education and Research Foundation (SERF)'s 12th webinar. was on “Space Weather” and consist of four talks by Prof P K Manoharan. These were made live on 15th, 16th, 17th and 18th April 2019 during 06:00 to 07:00 UT.

The titles of the talks are as follows:
Talk 1 Ooty Radio Telescope and its Solar Wind Observations
Talk 2 Three-dimensional Solar Wind
Talk 3 Coronal Mass Ejections and Co-rotating Interaction Regions
Talk 4 Near-Earth Space Weather Effects of Solar Transients

About the speaker (Prof. P. K. Manoharan):
Professor P K Manoharan is a research physicist and former Head of Radio Astronomy Center, NCRA-TIFR, India. He earned his doctorate in physics in 1991 from University of Bombay. Manoharan effectively utilized the capabilities of the large Ooty Radio Telescope to study the properties of solar wind and, he developed a method to determine the speed and other physical properties of the solar wind using interplanetary scintillation measurements from a single-telescope. Manoharan's research interests include the physics of Sun and heliosphere, radio astronomical techniques and observations. He has guided several students. He has published more than hundred research papers in refereed journals, written review articles and contributed chapters to books. He has delivered many invited and review talks at international and national conferences. He played key role in CASWES, IHY, and ISWI programs. He served as Secretary and President of Solar-Terrestrial Section of Asia and Oceania Geosciences Society. He currently serves in Editorial Boards of JSWSC and IJRSP.

Abstracts of the talks of the webinar on “Space Weather”:
This webinar will consist of four talks and the summary of these are given below:

Talk 1 Ooty Radio Telescope and its Solar Wind Observations: In this talk, with a brief introduction to radio astronomy, I will describe one of the major radio astronomical facilities of India, the Ooty Radio Telescope (ORT). I will discuss the basics of interplanetary scintillation measurements with the ORT for the studies of solar wind, dynamics of coronal mass ejections and interplanetary disturbances that are relevant for space weather

Talk 2 Three-dimensional Solar Wind: Sun continually ejects a huge volume of supersonic plasma into interplanetary space (the heliosphere), which engulfs the planets and many smaller bodies, shaping their environments. This talk will discuss (a) basics of formation of solar wind, (b) observing techniques, and (c) its properties in the Sun to Earth distance and beyond.

Talk 3 Coronal Mass Ejections and Co-rotating Interaction Regions: Coronal mass ejections (CMEs) involve ejection of significant amount of coronal plasma, accompanying magnetic field, and associated electromagnetic radiation into space above the surface of the Sun. A co-rotating interaction region (CIR) is formed by the interaction of high-speed solar wind originating above a "coronal hole" at the Sun with the preceding slower solar wind. This talk will provide a discussion on the properties of CMEs and CIRs in the inner heliosphere.

Talk 4 Near-Earth Space Weather Effects of Solar Transients:  Coronal mass ejections (CMEs) and their near-Earth counterparts are the primary cause for space weather consequences, respectively, solar energetic particles and geomagnetic storms. Intense levels of geomagnetic storms are favoured when the CME's enhanced magnetic field becomes more pronounced and prolonged in a south-directed orientation. This talk will review the various effects of CMEs and CIRs at the near-Earth space.