Daily observations of solar global oscillations using a resonant scattering spectrometer have been obtained by observing integral sunlight during the summer...
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PublicationThe global oscillation spectrum of the sun. I - Analysis of daily power spectra of velocity measurements
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NewsThe IAC presents the video of the POLMAG project
The IAC presents a public outreach video about the project “Polarized Radiation Diagnostics for Exploring the Magnetism of the Outer Solar Atmosphere” (POLMAG)...
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PublicationThe low L solar p-mode spectrum at maximum and minimum solar activity
Velocity measurements of disc integrated sunlight obtained at the Observatorio del Teide (Izana) from 1980 throughout 1989 are used to find the frequencies and...
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PublicationThe motion of magnetic flux tubes in the convection zone and the subsurface origin of active regions
The rise of kink-unstable magnetic flux tubes through the solar convection zone is discussed with a view to explaining the subsurface origin of active regions...
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PublicationThe observation of intrinsically different emergences for large and small active regions
The analysis of high-resolution H-alpha and white-light observations on the emergence of 73 active regions shows an intrinsically different behavior for both...
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PublicationThe observed background solar velocity noise
Using accurate radial velocity observations of integral sunlight, the background solar velocity noise has been measured at different frequencies of interest for...
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PublicationThe profuse optically-thin irregularities of the photospheric magnetic fields
The highly irregular nature of most photospheric magnetic fields is analyzed here, trying to emphasize the connection between photospheric fluctuations and...
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PublicationThe role of activity complexes in the distribution of solar magnetic fields.
Using published data on the large-scale distribution of solar activity, the authors conclude that the longlived coronal holes are formed and maintained by the...
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TalkThe stochastic, intermittent nature of quiet Sun magnetism
The quiet Sun (the 99%, or more, of the solar surface not covered by sunspots or active regions) is receiving increased attention in recent years; its role on...