Movies of magnetograms of sunspots often show small-size magnetic patches that move radially away and seem to be expelled from the field of the spot. These patches are named Moving Magnetic Features (MMFs). They have been mostly observed around spots and have been interpreted as manifestations of penumbral filaments. Nevertheless, few observations of MMFS streaming out from spots without penumbra have been reported. He we investigate the physical properties of MMFs observed around the field of a pore derived by the analyses of high spectral, spatial and temporal resolution data acquired at the Dunn Solar Telescope with IBIS. We find that the main properties of the investigated features agree with those reported for MMFs observed around regular spots. These results indicate that an improvement of current numerical simulations is required to understand the generation of MMFs in the lack of penumbrae.

Criscuoli, S., DEL MORO, D., Giannattasio, F., Viticchié, B., Giorgi, F., Ermolli, I., et al. (2012). Physical properties of Moving Magnetic Features observed around a pore. In Understanding solar activity: advances and challenges: 4th French-Chinese meeting on solar physics (pp.87-90) [10.1051/eas/1255012].

Physical properties of Moving Magnetic Features observed around a pore

DEL MORO, DARIO;BERRILLI, FRANCESCO
2012-06-01

Abstract

Movies of magnetograms of sunspots often show small-size magnetic patches that move radially away and seem to be expelled from the field of the spot. These patches are named Moving Magnetic Features (MMFs). They have been mostly observed around spots and have been interpreted as manifestations of penumbral filaments. Nevertheless, few observations of MMFS streaming out from spots without penumbra have been reported. He we investigate the physical properties of MMFs observed around the field of a pore derived by the analyses of high spectral, spatial and temporal resolution data acquired at the Dunn Solar Telescope with IBIS. We find that the main properties of the investigated features agree with those reported for MMFs observed around regular spots. These results indicate that an improvement of current numerical simulations is required to understand the generation of MMFs in the lack of penumbrae.
French-Chinese meeting on solar physics understanding solar activity: advances and challenges
Nice
2012
4.
Rilevanza internazionale
giu-2012
Settore FIS/05 - ASTRONOMIA E ASTROFISICA
English
Intervento a convegno
Criscuoli, S., DEL MORO, D., Giannattasio, F., Viticchié, B., Giorgi, F., Ermolli, I., et al. (2012). Physical properties of Moving Magnetic Features observed around a pore. In Understanding solar activity: advances and challenges: 4th French-Chinese meeting on solar physics (pp.87-90) [10.1051/eas/1255012].
Criscuoli, S; DEL MORO, D; Giannattasio, F; Viticchié, B; Giorgi, F; Ermolli, I; Zuccarello, F; Berrilli, F
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/77667
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