5 papers
Fitting trends in quasar emission and absorption line redshifts
Netra K Subramanian, Prasad Subramanian, Nimisha G Kantharia
The spectrum of a quasar consists of a few emission lines whose wavelengths are shifted by similar redshifts and numerous absorption lines whose wavelengths are shifted by differen…
Aditya-L1/VELC observations of CME associated broadening of 5303Å coronal emission line
K. Sasikumar Raja, V. Muthu Priyal, R. Ramesh +2
We present Aditya-L1/VELC spectroscopic observations of 5303Å coronal emission line widths before and after coronal mass ejections (CMEs) which showed coronal dimming. The sit \& s…
Intermittent turbulent fluctuations in solar coronal mass ejections
Apurva Bhagat, Sumit Tambe, Debesh Bhattacharjee +1
Localised regions of high intensity fluctuations are known to be signatures of intermittency in fluid and plasma turbulence. We investigate such turbulent spots using near-Earth {\…
Proton heating estimates from near-Earth observations of coronal mass ejections in solar cycle 24
Debesh Bhattacharjee, Prasad Subramanian, Saikat majumder +1
As solar coronal mass ejections (CMEs) propagate through the heliosphere, they expend energy in heating protons to compensate for the cooling that occurs due to expansion. CME prop…
Turbulent power: a discriminator between sheaths and CMEs
Deep Ghuge, Debesh Bhattacharjee, Prasad Subramanian
Solar coronal mass ejections (CMEs) directed at the Earth often drive large geomagnetic storms. Here we use velocity, magnetic field and proton density data from 152 CMEs that were…