5k citations
- University of OsloNO150 papers
- Bay Area Environmental Research InstituteUS127 papers
- Goddard Space Flight CenterUS95 papers
- NASA Research ParkUS82 papers
- NSF NCAR High Altitude ObservatoryUS82 papers
- NSF National Center for Atmospheric ResearchUS70 papers
- National Astronomical Observatory of JapanJP65 papers
- Center for Astrophysics Harvard & SmithsonianUS61 papers
- Stanford UniversityUS61 papers
- Centre National de la Recherche ScientifiqueFR59 papers
- Max Planck Institute for Solar System ResearchDE56 papers
- Marshall Space Flight CenterUS44 papers
6 papers · 2 filters
A new Method to Constrain the Iron Abundance from Cooling Delays in Coronal Loops
Markus J. Aschwanden, C. J. Schrijver, A. R. Winebarger +1
Recent observations with TRACE reveal that the time delay between the appearance of a cooling loop in different EUV temperature filters is proportional to the loop length, dt_12 ~…
Tomographic 3D-Modeling of the Solar Corona with FASR
Markus J. Aschwanden, David Alexander, Marc DeRosa
The "Frequency-Agile Solar Radiotelescope" (FASR) litteraly opens up a new dimension in addition to the 3D Euclidian geometry: the frequency dimension. The 3D geometry is degenerat…
On the Photometric Accuracy of RHESSI Imaging and Spectrosocopy
Markus J. Aschwanden, Thomas R. Metcalf, Sam Krucker +4
We compare the photometric accuracy of spectra and images in flares observed with the Ramaty High Energy Solar Spectroscopic Imager (RHESSI)}spacecraft. We test the accuracy of the…
MHD Sausage Mode Oscillations in Coronal Loops
Markus J. Aschwanden, Valery M. Nakariakov, Victor F. Melnikov
A recent study by Nakariakov et al. pointed out that the dispersion relation of MHD sausage mode oscillations has been incorrectly applied to coronal loops, neglecting the highly d…
Observational Tests of Damping by Resonant Absorption in Coronal Loop Oscillations
Markus J. Aschwanden, Richard W. Nightingale, Jesse Andries +2
One of the proposed damping mechanisms of coronal (transverse) loop oscillations in the kink-mode is resonant absorption as a result of the Alfven speed variation at the outer boun…
2D MHD modelling of compressible and heated coronal loops obtained via nonlinear separation of variables and compared to TRACE and SoHO observations
G. J. D. Petrie, C. Gontikakis, H. Dara +2
An analytical MHD model of coronal loops with compressible flows and including heating is compared to observational data. The model is constructed via a systematic nonlinear separa…