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Research at IIG

Publications

IIG Facilities

Announcements

  • Motion of Charged Particle in Space-Plasma Environment(302.72 KB) This will display an animated GIF

    We know that Sun is a ball of hot plasma, which continuously emits energetic charged particles in the form of solar wind (200-800 km/s). These charged particles are deflected by the Earth’s magnetic field but some of these particles can enter the Earth’s magnetosphere from Polar regions, where magnetic field lines are open and also from magnetotail region through the process of reconnection. These particles get trapped in the geomagnetic field lines and perform three motions: Gyro Motion, Bounce Motion, and Drift Motion.
    Speaker - Ayushi Srivastava (IIG) | Date & Time - 20/05/2022, 17.00 | Venue - IIG Lecture Hall

  • 3D Numerical Ray tracing of Radio wave propagation through Ionosphere(83.54 KB) This will display an animated GIF

    The ionosphere is a region of the earth’s upper atmosphere where neutral air is ionized by solar photons and cosmic rays.HF radio waves travelling through ionosphere interact with the free electrons present there and are bent back towards the surface of earth. Due to these reflections from ionosphere the radio signals are able to travel longer distances. Although today, satellites are widely used, HF radio communications using the ionosphere still play a major role in providing worldwide radio coverage.
    Speaker -  Ankita Manjrekar(IIG) | Date & Time - 20/05/2022, 16.00 | Venue - IIG Lecture Hall

  • Equatorial Spread F Occurrence during Summer Solstice over Tirunelveli Region(107.44 KB) This will display an animated GIF

    Speaker - Gayathri.B (Indian Institute of Geomagnetism)
    Abstract  
    A study carried out on the occurrence of pre-midnight and midnight spread F events at an equatorial station Tirunelveli (8.70N, 77.70 E) equipped with Digital ionosonde (CADI).The ionogram data obtained from the ionosonde has been used for identifying the midnight spread F events and also associated temporal variation of virtual height and frequency during the summer solstice. The percentage occurrence of May solstice is analyzed and more ESF occurrence are observed between 12:00 IST – 01.30 IST unlike equinox where ESF is seen predominately in the post sunset. The observations are discussed on the premidnight occurrence F region irregularities in the summer of solar minimum condition.
    Time & date...

  • KINETIC THEORY OF MAGNETOSONIC WAVES(25.22 KB) This will display an animated GIF

    Speaker - Amrutha (Indian Institute of Geomagnetism)
    Abstract
    Kinetic dispersion relation of magnetosonic waves in magnetised plasma system with a single species Maxwellian distributed ions and electrons will be discussed. The dielectric tensor for the system is derived using kinetic theory starting from the Vlasov equation along with Maxwell equations. The complex dispersion relation of magnetosonic wave is derived using the geometry of the wave. The real frequency and growth rate of magnetosonic wave is calculated from the kinetic dispersion relation. The results are compared with the fluid approach in the absence of temperature anisotropy at appropriate limits.

    Time & date: 16:00, 06 May 2022   |   Venue: Lecture Hall

  • 15TH QUADRENNIAL SOLAR-TERRESTRIAL PHYSICS SYMPOSIUM (STP-15)This will display an animated GIF

    15TH QUADRENNIAL SOLAR-TERRESTRIAL PHYSICS SYMPOSIUM (STP-15)
    21 - 25 February 2022  
    A Virtual Event
    Hosted by Indian Institute of Geomagnetism (IIG)

Photo Gallery

Public Outreach

IS THERE A CONTINENT HIDDEN BELOW THE ARABIAN SEA?
Zealandia has caught the imagination of geoscientific world and reams of paper and netspace has been dedicated to announcing arrival of this new ‘continent’ on the block. Geoscientists have been working hard and long to identify the signatures that could mark a sunken landmass as a continent. They... more
THE NEW MEGHALAYAN AGE: (WHAT IT MEANS AND WHY IS...
THE NEW MEGHALAYAN AGE:  WHAT IT MEANS AND WHY IS IT NECESSARY? The human race has divided time into different units since it culturally stumbled upon the abstract concept of time. We have broken time into variable slices like millennia, century, decade, hour, minute, second and so on. The... more
FACE OFF WITH THE SUN
FACE OFF WITH THE SUN The civilizations the world over have many myths and legends depicting powerful and divine individuals making a go at the sun. The end is more often than not quite discouraging. They always burn out near the sun. But, these folklores are symptomatic of humanity’s... more
BREAKING UP OF ICEBERGS AT ANTARCTICA: WHAT DOES...
India is far away from Antarctica and the proceedings that take place over there should not be of concern to it. This is the feeling of most of us sane Indians. However, the natural system that the Earth is operating and dealing with leaves no room for such complacency. The Earth is an integrated... more
MESOSPHERE AND LOWER THERMOSPHERE (MLT): DYNAMICS...
Anybody who travels frequently will know that weather can change dramatically from one place to another. If this travel is done vertically, into the sky, then this change is all the more spectacular. It changes from a realm of dense molecular setting to an almost empty space. The change in... more
National Science Day Celebrations at Indian Instit...
In order to bring scientific awareness among the students and public, the National Science Day- 2018 celebrations started with various competitions held for students and teachers. The focal theme for this National Science Day was “Reaching the unreached through Science and Technology”. The... more
105th INDIAN SCIENCE CONGRESS
The Institute participated in the 105th Indian Science Congress held at Imphal, Manipur, from 16-20 March 2018 with a group consisting of four faculty members. IIG participated in the Science Expo as a part of Department of Science and Technology (DST) pavilion. The focal theme of the Indian... more
India International Science Festival - 2018 held a...
Ministry of Science and Technology and the Ministry of Earth Sciences jointly held India International Science Festival (IISF) at Chennai from 13th to 17th October 2017. The Institute participated in IISF by putting up an exhibition of posters depicting the science of geomagnetism and allied fields... more
School/College Visit at observatories
ALIBAG M.O. A brief introduction on history of geomagnetism in India, role of Colaba-Alibag magnetic observatories in institutionalizing geomagnetism in India, the utility of network of magnetic observatories all over India was briefly explained. The students and teachers were also exposed to... more
School/College Visit at Regional Centers
ALLAHABAD R.C. Three day Science week celebration with the theme "Reaching the unreached through science and technology" were carried out at KSKGRL during 26th - 28th February 2018. In order to create awareness about the scientific research carried at the RC, power point presentation featuring... more
School/College Visit at HQ
The school/college visitors were acquainted with the basics of geomagnetism, GPS and other related activities carried out at IIG. Posters, models, lab visits and talks were arranged to enlighten them on the advances made at IIG in the field of geomagnetism and allied areas. All the activities were... more