I am pursuing the following projects in collaboration with several other researchers across the world and with some project students. Interested ones can mail me for further details.
- Kinematics of CMEs in cycle 23 and 24
Coronal Mass Ejections (CMEs) are huge plasma and magnetic field eruptions that originates from solar atmosphere and propagates into heliosphere. CMEs are the main drivers of space-weather. An earth impacting CME can disrupt the satellite communication, thus it becomes imperative to understand the kinematics of CMEs. In this project we try to understand the kinematics of CMEs over a period of 22 years. We try to understand if the solar cycle has any effects on the severity of CMEs generated during that cycle. This study will have implications on the future space-weather.
- Dynamics of coronal rain
Coronal rains are the blobs of cool plasma that are formed at the timescales of few minutes in solar atmosphere and fall back to the chromosphere following loop like paths. Condensation of plasma happens in coronal loops via a process called, catastrophic cooling. In this project we study the dynamics of coronal rain combining several existing space based missions. We will estimate the time scale of condensations and energy.
- Oscillations in open magnetic structures
Waves carry the information of the ambient medium in which they travel. Similarly, MHD waves carry the information of the ambient plasma. Estimating the properties of MHD waves, one can estimate the property of the ambient plasma. In this project we find the signatures of waves in open magnetic structures. It's quite puzzling how these structures support MHD waves. We will carry out the magnetic-seismology to estimate the magnetic fields.
I am pursuing the following projects amateurly without the aim of any publications. Interested ones can mail me for further details.
- Image processing and Perception
In this project, my main aim is to draw analogies between image processing techniques that are used to enhance images in the machine (computer) and image perception that happens in human brain. I find that these two processes are quite similar in certain ways. For example, scaling of image intensity is done for visualisation of images in the computer screen. Similarly, scaling of intensity of images with respect to the background intensity happens in human brain too. Another example, Difference Of Gaussians (DOG) operator is used to enhance the edges in an image. Interestingly, a similar DOG operator (which comes from center surround ON/OFF cells in retina) is also at work in human brain. This give rise to several optical illusions.