Proton flares and the topology of the magnetic field in the active regions of the Sun

Abstract

[1]  Events in flare productive active regions (ARs) accompanied by proton flares are considered on the basis of the observations from the ground and spacecrafts during the recent decades. The principal features of the morphology, magnetic fields, and substance mass motions in the ARs and also their variations with time are analyzed. All the considered ARs had a common feature in the magnetic field structure: a rather extended configuration of the d type existed in them. The observations in the high-altitude expedition of the Sternberg Institute and the data from publications have been used.

Received 16 November 2004; revised 6 September 2005; accepted 11 October 2005; published 20 January 2006.

Keywords: Solar flares; Proton events; Energetic particles.

Index Terms: 7519 Solar Physics, Astrophysics, and Astronomy: Flares; 7524 Solar Physics, Astrophysics, and Astronomy: Magnetic fields; 7514 Solar Physics, Astrophysics, and Astronomy: Energetic particles.