We describe a new method involving wavelet transforms for deriving the wind velocity associated with atmospheric turbulent layers from Generalized SCIDAR measurements. The algorithm analyses the cross-correlation of a series of scintillation patterns separated by lapses of Δt, 2Δt, 3Δt, 4Δt and 5Δt using wavelet transforms. Wavelet analysis
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Processing of turbulent-layer wind speed with Generalized SCIDAR through wavelet analysisGarcía-Lorenzo, B. et al.112006
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Propagating Waves Transverse to the Magnetic Field in a Solar Prominence
We report an unusual set of observations of waves in a large prominence pillar that consist of pulses propagating perpendicular to the prominence magnetic field. We observe a huge quiescent prominence with the Solar Dynamics Observatory Atmospheric Imaging Assembly in EUV on 2012 October 10 and only a part of it, the pillar, which is a foot or barb
Schmieder, B. et al.Advertised on:
112013 -
Propagation statistics of ground-satellite optical links with different turbulence conditions
The European Space Agency (ESA) geostationary data-relay satellite ARTEMIS started its operation in February 2003, after reaching its final position in the geostationary orbit. Since then, ESA and the Instituto de Astrofísica de Canarias (IAC) have carried out routinely bidirectional optical link experiments between ARTEMIS and the Optical Ground
Reyes, Marcos et al.Advertised on:
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Properties of a pilot sample of blue compact dwarf galaxies at intermediate redshifts located in the Hubble Ultra Deep Field
We present the analysis of the photometric and spectroscopic properties of a pilot sample of spectroscopically-confirmed intermediate-redshift blue compact dwarf galaxies (BCDs) located in the Hubble Ultra Deep Field. We found that applying the classic BCD definition, we recover a mix of galaxies with a wide range of star-forming activity
Rodríguez-Muñoz, L. et al.Advertised on:
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Properties of horizontal flows inside and outside a solar pore
Horizontal velocities and their temporal variations inside a large pore and in the surrounding granulation are studied from a 73 min sequence of white light frames, acquired at the Swedish Vacuum Solar Telescope (La Palma). The local correlation tracking technique with high spatial (0farcs 31) and temporal (5 min) resolution was applied to
Roudier, Th. et al.Advertised on:
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Properties of oscillatory motions in a facular region
Aims: We study the properties of waves in a facular region of moderate strength in the photosphere and chromosphere. Our aim is to statistically analyse the wave periods, power, and phase relations as a function of the magnetic field strength and inclination. Methods: Our work is based on observations obtained at the German Vacuum Tower Telescope
Kostik, R. et al.Advertised on:
112013