Search results for "sistema solar"
showing 6 items of 6 documents
The intensity contrast of solar photospheric faculae and network elements : II. Evolution over the rising phase of solar cycle 23
2006
We studied the radiative properties of small magnetic elements (active region faculae and the network) during the rising phase of solar cycle 23 from 1996 to 2001, determining their contrasts as a function of heliocentric angle, magnetogram signal, and the solar cycle phase. We combined near-simultaneous full disk images of the line-of-sight magnetic field and photospheric continuum intensity provided by the MDI instrument on board the SOHO spacecraft. Sorting the magnetogram signal into different ranges allowed us to distinguish between the contrast of different magnetic structures. We find that the contrast center-to-limb variation (CLV) of these small magnetic elements is independent of …
Evidence of small-scale magnetic concentrations dragged by vortex motion of solar photospheric plasma
2010
Vortex-type motions have been measured by tracking bright points in high-resolution observations of the solar photosphere. These small-scale motions are thought to be determinant in the evolution of magnetic footpoints and their interaction with plasma and therefore likely to play a role in heating the upper solar atmosphere by twisting magnetic flux tubes. We report the observation of magnetic concentrations being dragged towards the center of a convective vortex motion in the solar photosphere from high-resolution ground-based and space-borne data. We describe this event by analyzing a series of images at different solar atmospheric layers. By computing horizontal proper motions, we detec…
Zenith angle distributions at Super-Kamiokande and SNO and the solution of the solar neutrino problem
2000
We have performed a detailed study of the zenith angle dependence of the regeneration factor and distributions of events at SNO and SK for different solutions of the solar neutrino problem. In particular, we discuss oscillatory behaviour and the synchronization effect in the distribution for the LMA solution, the parametric peak for the LOW solution, etc.. Physical interpretation of the effects is given. We suggest a new binning of events which emphasizes distinctive features of zenith angle distributions for the different solutions. We also find the correlations between the integrated day-night asymmetry and the rates of events in different zenith angle bins. Study of these correlations st…
Nicolai Copernici ... De Reuolutionibus orbium coelestium Libri VI : Habes in hoc opere ... Motus stellarum, tam fixarum, quam erraticarum ... : Habe…
1543
Capll. orn.
Esteve Graset. Una dramaturgia interdisciplinaria. Materiales del discurso escénico en Esteve Graset
2016
Esteve Graset es uno de los artistas españoles más desconocidos y a la vez interesantes de la escena nacional e internacional de las últimas décadas. Es autor de textos, instalaciones escénicas, importantes trabajos sobre la voz humana (conciertos) y muchas producciones escénicas con actores y bailarines en las que se pone en práctica la suma de todos sus conocimientos e inquietudes. Con los materiales de sus propias representaciones organiza instalaciones en las que da vida a los objetos. Su personalidad independiente y evolutiva, su discurso como actor, director, autor, creador y pedagogo, así como la gran variedad de disciplinas artísticas que contempla su obra, y su compromiso con el ti…
Estudio de pequeños elementos magnéticos en la fotosfera y cromosfera solar con telescopios en tierra y espaciales = Study of small magnetic elements…
2011
The photosphere is the best known layer of the Sun, as it delimits its surface and furthermore, it has been observed in detail since the beginning of the telescopic era. The convection zone redistributes the magnetic field over the photosphere and the upper layers. On the many scales of the solar surface magnetism, the smallest elements seen in the photosphere are the most unknown, due to the limit in resolution of a finite telescope. The structures that are smaller than typically 100 km are smeared out. In this Thesis, the small bright features of the magnetic network and internetwork over the resolution limit are analysed from the dynamical point of view, and linked with their physical pr…