Small-scale topology of solar atmospheric dynamics
نویسندگان
چکیده
منابع مشابه
Small-scale topology of solar atmosphere dynamics
Wecontinue studying the small-scale topologyof dynamical phenomena in the quiet-sun internetwork atmosphere through statistical estimation of the co-location probability of different fine-structure elements and wave modes. In this paper we chart spatial alignments between the granular brightness structuring of the photosphere, Ca ii K2V brightness patterns in the chromosphere, and wave amplitud...
متن کاملSmall-scale topology of solar atmosphere dynamics III. Granular persistence and photospheric wave amplitudes
We use a superb five-hour sequence of 900 solar images taken at La Palma to study long-duration persistence in the solar granulation, in the context of the long-lived “intergranular holes” discovered by Roudier et al. (1997) and the contention that these mark sites of convective downflow plumes. We develop a procedure to locate “persistency regions” that contain granular brightness maxima or mi...
متن کاملSmall-scale topology of solar atmosphere dynamics I. Wave sources and wave diffraction
We study the small-scale topology of dynamical phenomena in the quiet-sun internetwork atmosphere, using short-duration Fourier analysis of high-resolution filtergram sequences to obtain statistical estimates for the co-location probability of different fine-structure elements and wave modes. In this initial paper we concentrate on the topology of shortduration Fourier amplitude maps for the ph...
متن کاملSmall-scale topology of solar atmosphere dynamics IV. On the relation of photospheric oscillations to meso-scale flows
We use a high quality five-hour sequence of images of the solar photosphere taken at the Swedish Solar Vacuum Telescope, La Palma, to study the relation of meso-scale divergence with the amplitudes of photospheric intensity oscillations. Meso-scale flows are determined by local correlation tracking of the granulation. Statistical evaluation of the co-location probability of regions with more th...
متن کاملSolar radiation and atmospheric dynamics
This paper studies the problems of mathematical description of physical processes in open non-equilibrium atmosphere. It is proposed that the mathematical description should be based on the idea that properties of an open system are determined by the properties of its elements and external constraints. It is also explained why atmosphere should be represented by an open non-equilibrium system o...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2002
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20020636