Aims: We investigate a new method to for obtaining the plasma parameters of solar prominences observed in Mgii h&k spectral lines by comparing line profiles from IRIS satellite bank computed with one-dimensional non-local thermodynamic equilibrium (non-LTE) radiative transfer code. Methods: Using grid 1007 non-LTE models we carry out this match spectra while accounting core shifts not present m...

We investigate the magnetic reconnection in an MHD simulation of a coronal flux rope (MFR) confined by helmet streamer, where prominence-cavity system forms. This includes hot cavity surrounding prominence with horns and central core above prominence. The evolution from quasi-equilibrium to eruption can be divided into four phases: quasi-static, slow rise, fast propagation phases. emerged MFR i...