In this paper, I introduce the light curves of comets, bright comets or interesting comets with peculiar light curves, observed during a year between 2005 March and 2006 February. My web page "Comet Catalog" also introduces the light curves of comets, including ones not described in this paper. This graph represents the brightness change with a heliocentric brightness, corrected magnitude as ob...

Stealth coronal mass ejections (CMEs) are eruptions from the Sun that not associated with appreciable low-coronal signatures. Because they often cannot be linked to a well-defined source region on Sun, analysis of their initial magnetic configuration and eruption dynamics is particularly problematic. In this article, we address issue by undertaking first attempt at predicting fields stealth CME...

There are reasons to believe that the solar matter density fluctuates around an equilibrium profile. One of these reasons is a resonance between the Alfvén waves and the g-modes inside the Sun that creates spikes in the density profile. The neutrinos are created in the solar core and passing through these spikes feel them as a noisy perturbation, whose correlation length is given by the distanc...

This paper presents an overview of results obtained during the CAWSES-II period on the short-term variability of the Sun and how it affects the near-Earth space environment. CAWSES-II was planned to examine the behavior of the solar-terrestrial system as the solar activity climbed to its maximum phase in solar cycle 24. After a deep minimum following cycle 23, the Sun climbed to a very weak max...