E-Print Archive

There are 4353 abstracts currently viewable.


Advanced Search
Main Page Add New E-Print Submitter
News Help/FAQ About Preferences
Manage Key Phrase
Solar Stereoscopy with STEREO/EUVI A and B spacecraft from small (6°) to large (170°) spacecraft separation angles View all abstracts by submitter

Markus J. Aschwanden   Submitted: 2012-07-11 14:11

We performed for the first time stereoscopic triangulation of coronalloops in active regions over the entire range of spacecraft separationangles ( α sep≈ 6°, 43°, 89°, 127°,and 170°). The accuracy of stereoscopic correlation depends mostlyon the viewing angle with respect to the solar surface for eachspacecraft,which affects the stereoscopic correspondence identification of loops inimage pairs. From a simple theoretical model we predict an optimum rangeof α sep ≈ 22°-125°, which is also experimentallyconfirmed. The best accuracy is generally obtained when an active regionpasses the central meridian (viewed from Earth), which yields asymmetricview for both STEREO spacecraft and causes minimum horizontalforeshortening.For the extended angular range of α sep≈6°-127° wefind a mean 3D misalignment angle of μPF ≈ 21°-39°of stereoscopically triangulated loops with magnetic potential fieldmodels,and μFFF ≈ 15°-21° for a force-free field model,which is partly caused by stereoscopic uncertainties muSE ≈9°. We predict optimum conditions for solar stereoscopy duringthe timeintervals of 2012-2014, 2016-2017, and 2021-2023.

Authors: Markus J. Aschwanden, Jean-Pierre Wülser, Nariaki Nitta, and James Lemen
Projects: STEREO

Publication Status: Solar Physics (in press)
Last Modified: 2012-07-12 09:38
Go to main E-Print page  The Wave-Driver System of the Off-Disk Coronal Wave 17 January 2010  First 3D Reconstructions of Coronal Loops with the STEREO                 A+B Spacecraft: IV. Magnetic Modeling with Twisted Force-Free Fields  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

Go to main E-Print pageGo to main E-Print page.
Previous AbstractPrevious Abstract.
Next AbstractNext Abstract.
Download PreprintDownload Preprint.
Submitter's HomepageSubmitters Homepage.
Edit EntryEdit Entry.
View All Abstracts By SubmitterView all abstracts by submitter.
Delete AbstractDelete abstract.

Latest Entries
The role of non-axisymmetry of magnetic flux rope in constraining solar eruptions
Energy budget of plasma motions, heating, and electron acceleration in a three-loop solar flare
Space weather: the solar perspective - an update to Schwenn (2006)
Mixed properties of slow magnetoacoustic and entropy waves in a plasma with heating/cooling misbalance
The morphology of average solar flare time profiles from observations of the Sun's lower atmosphere
Indications of stellar coronal mass ejections through coronal dimmings
Could switchbacks originate in the lower solar atmosphere? II. Propagation of switchbacks in the solar corona
Solar large-scale magnetic field and cycle patterns in solar dynamo
Three-dimensional magnetic reconnection in astrophysical plasmas
Energy partition in a confined flare with an extreme-ultraviolet late phase
Alfvén wave heating in partially ionized thin threads of solar prominences
He I 10830 Dimming During Solar Flares, I: The Crucial Role of Non-Thermal Collisional Ionisations
Separating aa-index into Solar and Hale Cycle Related Components Using Principal Component Analysis
Inward Propagating Plasma Parcels in the Solar Corona: Models with Aerodynamic Drag, Ablation, and Snowplow Accretion
Energetics and 3-D Structure of Elementary Events in Solar Coronal Heating
Stellar Superflares Observed Simultaneously with Kepler and XMM-Newton
Medium-term predictions of F10.7 and F30 cm solar radio flux with the adaptive Kalman filter
Resonances in a Coronal Loop Driven by Torsional Alfvén Waves Propagating from the Photosphere
Effects of external flow on resonant absorption of coronal loop kink oscillations driven by an external fast wave: Selective excitation problem
Emerging Dimming as Coronal Heating Episodes

Related Pages
MSU Solar Physics.
Max Millennium Science Mail Archive.
Max Millennium Message of the Day Mail Archive.
Max Millennium Flare Catalog

Archive Maintainer
Alisdair Davey

© 2000-2020 Solar Physics Group - Montana State University