Frequency shift of solar p-modes as seen by cross correlation analysis
Data obtained at the Observatorio del Teide (Tenerife) during the years 1978 to 1988 using a resonant scattering spectrophotometer, is analyzed to look for...
Frequency Shifts of the Individual Low-Degree P-Modes during Solar Cycle 23 and its Extended Minimum
We study the response of the low-degree solar p-mode frequencies to the unusual extension of the minimum of solar surface activity since 2007. Helioseismic...
The solar activity, following an eleven years cycle, modifies the physical properties of the resonant cavity where the oscillation acoustic modes are trapped...
FRIDA, the diffraction limited NIR imager and IFS for the Gran Telescopio Canarias: status report
FRIDA is a diffraction limited imager and integral field spectrometer that is being built for the Gran Telescopio Canarias. FRIDA has been designed and is being...
FRIDA, the diffraction limited NIR imager and IFS for the GTC
FRIDA (InFRared Imager and Dissector for the Adaptive optics system of GTC) is a near infrared, diffraction limited imager and integral field spectrograph that...
FRIDA: Diffraction limited imaging and integral field spectroscopy with GTC
FRIDA (inFRrared Imager and Dissector for the Adaptive optics system of the Gran Telescopio Canarias) is being designed as a diffraction limited instrument with...
FRIDA: diffraction-limited imaging and integral-field spectroscopy for the GTC
FRIDA is a diffraction-limited imager and integral-field spectrograph for the adaptive-optics focus of the Gran Telescopio Canarias. In imaging mode FRIDA...
FRIDA: diffraction-limited imaging and integral-field spectroscopy for the GTC
FRIDA is a diffraction-limited imager and integral-field spectrograph for the adaptive-optics focus of the Gran Telescopio Canarias. In imaging mode FRIDA...