Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...308..631o&link_type=abstract
Astronomy and Astrophysics, v.308, p.631-636
Astronomy and Astrophysics
Astrophysics
7
Sun: Prominences, Waves, Sun: Oscillations, Magnetohydrodynamics
Scientific paper
In the present study we propose the resonant absorption of Alfven waves as the heating mechanism that leads to thermal sudden disappearances (DBt) of prominences. The physical parameters of prominence flux tubes are used with the low-{be}, linearized, resistive magnetohydrodynamic (MHD) model to calculate the heating times of prominences for a range of wavenumbers. The heating time dependence on the wavenumbers is compared to the measured times for DBt of quiescent prominences and a qualitative agreement is found. We find that present observational evidence is in qualitative agreement with the predictions of the resonant absorption heating mechanism for DBt of prominences. However, more observations of DBt are required to establish the heating mechanism with a higher degree of certainty.
Mouradian Zadig
Ofman Leon
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