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Observational data and orbits of the comets discovered at the Vilnius Observatory in 1980-2006 and the case of the comet 322P

Włodarczyk, Ireneusz; Černis, Kazimieras

This article is devoted to the discovery of comets at the Vilnius Observatory together with the orbital analysis of dynamically interesting comets, namely 322P. We studied the orbital evolution of comet 322P with and without non-gravitational effects. It turned out that many of the comet's orbital clones go into and out of retrograde orbits, somet…

Comparing results of real-scale time MHD modeling with observational data for first flare M 1.9 in AR 10365

Borisenko, Alexey Vasilevich; Podgorny, Igor Maksimovich; Podgorny, Alexander Igorevich

As shown in the first results of MHD simulations in the real scale of time, above the active region (AR) 10365, during the first flare M 1.9 (05/26/2003 05:34) at a height of 16-18 mm (lower corona), a singular line of magnetic field appears. The local maximum of the current density is situated on this singular line. The magnetic field in the vici…

Some kinematics of halo coronal mass ejections

Chandra, Ramesh; Verma, Virendra Kumar; Mittal, Nishant

We present an investigation of halo coronal mass ejections (HCMEs) kinematics and other facts about the HCMEs. The study of HCMEs is very important because HCMEs are regarded as the main causes of heliospheric and geomagnetic disturbances. In this study, we have investigated 313 HCMEs observed during 1996-2012 by LASCO, coronal holes, and solar fl…