Publications (8)
Observed local dispersion relations for magneto-acoustic-gravity waves in the Sun's atmosphere: Mapping the acoustic cut-off frequency
Stuart M. Jefferies, Bernhard Fleck, Neil Murphy +1
We present the observed local dispersion relations for magneto-acoustic-gravity waves in the Sun's atmosphere for different levels of magnetic field strength. We model these data w…
A New Method for Detecting Solar Atmospheric Gravity Waves
Daniele Calchetti, Stuart M. Jefferies, Bernhard Fleck +2
Internal gravity waves have been observed in the Earth's atmosphere and oceans, on Mars and Jupiter, and in the Sun's atmosphere. Despite ample evidence for the existence of propag…
Modelling Solar Oscillation Power Spectra: II. Parametric Model of Spectral Lines Observed in Doppler Velocity Measurements
Sergei V. Vorontsov, Stuart M. Jefferies
We describe a global parametric model for the observed power spectra of solar oscillations of intermediate and low degree. A physically motivated parameterization is used as a subs…
Post-AO high-resolution imaging using the Kraken multi-frame blind deconvolution algorithm
Douglas A. Hope, Stuart M. Jefferies, Gianluca Li Causi +4
In the context of extreme adaptive optics (ExAO) for large telescopes, we present the Kraken multi-frame blind deconvolution (MFBD) algorithm for processing high-cadence acquisitio…
LBT SHARK-VIS Observes a Major Resurfacing Event on Io
Al Conrad, Fernando Pedichini, Gianluca Li Causi +18
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes on Io's surface have been monitored from both spacecraft and ground-based telescopes. Here,…
High Contrast, High Angular Resolution Optical Speckle Imaging: Uncovering Hidden Stellar Companions
Steve B. Howell, Arturo O. Martinez, Douglas A. Hope +4
We explore the possibility of detecting very faint, very close-in stellar companions using large aperture ground-based telescopes and the technique of optical speckle imaging. We e…
Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
Mark P. Rast, Nazaret Bello González, Luis Bellot Rubio +84
The Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand and model the basic physical processes that control the structure and dynamics of…
On the Role of Acoustic-gravity Waves in the Energetics of the Solar Atmosphere
Thomas Straus, Bernhard Fleck, Stuart M. Jefferies +4
In a recent paper (Straus et al. 2008) we determined the energy flux of internal gravity waves in the lower solar atmosphere using a combination of 3D numerical simulations and obs…