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Magnetic twist and writhe of active regions: On the origin of deformed flux tubes
(EDP Sciences, 2003-12)
We study the long term evolution of a set of 22 bipolar active regions (ARs) in which the main photospheric polarities are seen to rotate one around the other during several solar rotations. We first show that differential ...
Electron precipitation associated with geomagnetic activity: Balloon observation of X ray flux in South Atlantic anomaly
(Amer Geophysical UnionWashington, 1997)
Thermally activated flux creep in nanocrystalline δ-MoN thin films
(Pergamon-Elsevier Science Ltd, 2018-11)
We study the vortex dynamics in a nanocrystalline 420 nm thick δ-MoN film on Si (100). The film was grown at room temperature by reactive sputtering and following it is crystallized by thermal annealing at 973 K for one ...
Measurement of the neutron flux in the core of the IPEN/MB-01 reactor by irradiation of activation foils
(Sao Paulo: ABEN, 2009, 2014)
Effects of PKCα activation on Ca2+ pump and K(Ca) channel in deoxygenated sickle cells
(1997)
We have previously shown that a pretreatment with phorbol 12-myristate 13-acetate (PMA), an activator of protein kinase C (PKC), reduced deoxygenation-induced K+ loss and Ca2+ uptake and prevented call dehydration in sickle ...
Filament interaction modeled by flux rope reconnection
(IOP Publishing, 2011-02)
Hα observations of solar active region NOAA 10501 on 2003 November 20 revealed a very uncommon dynamic process: during the development of a nearby flare, two adjacent elongated filaments approached each other, merged at ...
Observational consequences of a magnetic flux rope emerging into the corona
(IOP Publishing, 2004-12)
We show that a numerical simulation of a magnetic flux rope emerging into a coronal magnetic field predicts solar structures and dynamics consistent with observations. We first consider the structure, evolution, and relative ...