The structure and dynamics of small vertical photospheric magnetic flux concentrations has been often treated in the framework of an approximation based upon a low-order truncation of the Taylor expansions of all quantities in the horizontal direction, together with the assumption of instantaneous total pressure balance at the boundary to the non
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Comparison of Magnetoconvection Simulations with the Approximation of Thin Flux TubesYelles Chaouche, L. et al.92008
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Comparison of the thin flux tube approximation with 3D MHD simulations
Context: The structure and dynamics of small vertical photospheric magnetic flux concentrations has been often treated in the framework of an approximation based upon a low-order truncation of the Taylor expansions of all quantities in the horizontal direction, together with the assumption of instantaneous total pressure balance at the boundary to
Yelles Chaouche, L. et al.Advertised on:
92009 -
Composite analysis with Monte Carlo methods: an example with cosmic rays and clouds
The composite (superposed epoch) analysis technique has been frequently employed to examine a hypothesized link between solar activity and the Earth's atmosphere, often through an investigation of Forbush decrease (Fd) events (sudden high-magnitude decreases in the flux cosmic rays impinging on the upper-atmosphere lasting up to several days). This
Laken, B. A. et al.Advertised on:
92013 -
Compressed sensing for spectroscopy and polarimetry
Not Available
Asensio Ramos, A.Advertised on:
92010 -
Concept of SPARC4: a simultaneous polarimeter and rapid camera in 4 bands
We present a summary of the concept design report of a new astronomical instrument: SPARC4, Simultaneous Polarimeter and Rapid Camera in 4 bands. SPARC4 will provide photometry and polarimetry in four optical broad bands (griz SDSS) simultaneously. This is achieved by the use of dichroic beam splitters. The square eld of view is around 5.6 arcmin
Rodrigues, Claudia V. et al.Advertised on:
92012 -
Concepts for Multi-wavelength Observations with the 1.5 m Solar Telescope GREGOR
The initial instrumentation of the 1.5 m solar telescope GREGOR on Tenerife will include a grating spectrograph with a spectro-polarimeter for the near infrared and a dual Fabry-Perot filter spectro-polarimeter for the "red" wavelength range from 530 to 860 nm. Both instruments are based on their predecessors that are presently operated at the
Schmidt, W. et al.Advertised on:
92008