Two step mechanism for Moreton wave excitations in a blast-wave scenario: the 2006 December 06 case study

KRAUSE, G.; CECERE, M.; FRANCILE, C.; COSTA, A.; SCHNEITER, M.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2015 vol. 453 p. 2799 - 2799

0035-8711

e examine the capability of a blast-wave scenario ? associated with a coronal flare or to the expansion of CME flanks ? to reproduce a chromospheric Moreton phenomenon. We also simulate the Moreton event of 2006 December 06, considering both the corona and the chromosphere. To obtain a sufficiently strong coronal shock ? able to generate a detectable chromospheric Moreton wave ? a relatively low magnetic field intensity is required, in comparison with the active region values. Employing reasonable coronal constraints, we show that a flare ignited blast-wave or the expansion of the CME flanks emulated as an instantaneous or a temporal piston model, respectively, are capable to reproduce the observations.