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

KRAUSE, G.; CÉCERE, M.; FRANCILE, C.; COSTA, A.; ELASKAR, S.; SCHNEITER, M.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2015 vol. 453 p. 2799 - 2807

0035-8711

We examine the capability of a blast-wave scenario - associated with acoronal flare or to the expansion of CME flanks - to reproduce achromospheric Moreton phenomenon. We also simulate the Moreton event of2006 December 06, considering both the corona and the chromosphere. Toobtain a sufficiently strong coronal shock - able to generate adetectable chromospheric Moreton wave - a relatively low magnetic fieldintensity is required, in comparison with the active region values.Employing reasonable coronal constraints, we show that a flare ignitedblast-wave or the expansion of the CME flanks emulated as aninstantaneous or a temporal piston model, respectively, are capable toreproduce the observations.