Solar eruptions such as Coronal Mass Ejections (CMEs) observed in the inner solar corona (up to 4 R$_{\odot}$) show acceleration profiles which appear parabolic ridges height-time plots. Inspired by white-light automated detection algorithms, Computer Aided CME Tracking System (CACTus) and Eruptive Events Detection (SEEDS), we employ Hough Transform for first time automatically detect off-disk ...

[1] Interplanetary (IP) shocks are mainly responsible for the sudden compression of the magnetosphere, causing storm sudden commencement (SC) and sudden impulses (SIs) which are detected by ground-based magnetometers. On the basis of the list of 222 IP shocks compiled by Gopalswamy et al. (2010), we have investigated the dependence of SC/SIs amplitudes on the speed of the coronal mass ejections...

This paper follows up on a previous study showing that in an open atmosphere such as the solar corona the total magnetic helicity of a force-free field must be bounded and the accumulation of magnetic helicity in excess of its upper bound would initiate a non-equilibrium situation resulting in an expulsion such as a coronal mass ejection (CME). In the current paper, we investigate the dependenc...

The Sun constantly releases radiation and plasma into the heliosphere. Sporadically, launches solar eruptions such as flares coronal mass ejections (CMEs). CMEs carry away a huge amount of magnetic flux with them. An Earth-directed CME can cause serious consequences to human system. It destroy power grids/pipelines, satellites, communications. Therefore, accurately monitoring predicting is impo...

Coronal mass ejections (CMEs) are energetic releases of large-scale magnetic structures from the Sun. CMEs can have impacts on spacecraft and at Earth. This trajectory is typically assumed to be radial, but often CME moves outward with some spatial offset source region where eruption initially occurred. A frequently accompanied by a prominence eruption, movement cool, dense material up into cor...

Sun-as-a-star analyses, in which observational data is spatially integrated, are useful for interpreting stellar data. For future applications to observations, we performed analyses of H$\alpha$ spectra various active events on the Sun, not only flares and filament eruptions/surges solar disk, but also eruptions off limb prominences using spectral images taken by Solar Magnetic Activity Researc...

A loss of magnetic field confinement is believed to be the cause of coronal mass ejections (CMEs), a major form of solar activity in the corona. The mechanisms for magnetic energy storage are crucial in understanding how a field may possess enough free energy to overcome the Aly limit and open up. Previously, we have pointed out that the accumulation of magnetic helicity in the corona plays a s...

There continue to be open questions regarding the solar wind and coronal mass ejections (CMEs). For example: how do magnetic fields within CMEs corotating/stream interaction regions (CIRs/SIRs) evolve in inner heliosphere? What is radially distributed profile of shock-driving CMEs? internal structure that cause storms? It clear these involve configurations transient interplanetary plasma struct...

Plasma disturbances originating on the Sun, such as coronal mass ejections (CMEs), are a major factor in determining ‘space weather’ in the near-Earth environment. Virtually the only current source of routine observations of these disturbances as they propagate through the interplanetary medium are interplanetary scintillation (IPS) data. We review current work on time-dependent tomographic rec...

Abstract On February 21 and March – 22, 2021, the Extreme Ultraviolet Imager (EUI) onboard Solar Orbiter observed three prominence eruptions. The eruptions were associated with coronal mass ejections (CMEs) by Metis, Orbiter’s coronagraph. All also instruments Solar–TErrestrial RElations Observatory (Ahead; STEREO-A), Dynamics (SDO), Heliospheric (SOHO). Here we present an analysis of these We ...