E-Print Archive

There are 4080 abstracts currently viewable.


Search:

Advanced Search
Options
Main Page Add New E-Print Submitter
Information
Feedback
News Help/FAQ About Preferences
Manage Key Phrase
Notification
Three-dimensional reconstruction of CME-driven shock-streamer interaction from radio observations: a different take on the diagnostics of coronal magnetic fields View all abstracts by submitter

Salvatore Mancuso   Submitted: 2019-03-19 03:02

On 2014 October 30, a band-splitted type II radio burst associated with a coronal mass ejection (CME) observed by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic Observatory (SDO) occurred over the southeast limb of the Sun. The fast expansion in all directions of the plasma front acted as a piston and drove a spherical fast shock ahead of it, whose outward progression was traced by simultaneous images obtained with the Nançay Radioheliograph(NRH). The geometry of the CME/shock event was recovered through 3D modeling, given the absence of concomitant stereoscopic observations, and assuming that the band-splitted type II burst was emitted at the intersection of the shock surface with two adjacent low-Alfvén speed coronal streamers. From the derived spatiotemporal evolution of the standoff distance between shock and CME leading edge, we were finally able to infer the magnetic field strength B in the inner corona. A simple radial profile of the form B(r) = (12.6 ± 2.5)r-4 nicely fits our results, together with previous estimates, in the range r = 1.1-2.0 solar radii.

Authors: S. Mancuso, F. Frassati, A. Bemporad, D. Barghini
Projects: MLSO Mk4 K-Coronameter,Nançay Radioheliograph,SDO-AIA

Publication Status: A&A Letter, in press
Last Modified: 2019-03-19 10:44
Go to main E-Print page  Fast Magnetoacoustic Wave Trains with Time-dependent Drivers  The soft X-ray spectrometer polarimeter SolpeX  Edit Entry  Download Preprint  Delete Entry 

Key
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
Magnetic Helicity from Multipolar Regions on the Solar Surface
The width distribution of solar coronal loops and strands - Are we hitting rock bottom ?
Exoplanet predictions based on harmonic orbit resonances
Order out of randomness: Self-organization processes in astrophysics
Convection-driven generation of ubiquitous coronal waves
The minimum energy principle applied to Parker's coronal braiding and nanoflaring scenario
Self-organizing systems in planetary physics: Harmonic resonances of planet and moon orbits
Global energetics of solar flares: VIII. The Low-Energy Cutoff
Global Energetics of Solar Flares: VII. Aerodynamic Drag in Coronal Mass Ejections
Self-organized criticality in solar and stellar flares: Are extreme events scale-free ?
A Wavelet Based Approach to Solar-Terrestrial Coupling
Interplanetary Type IV Bursts
High resolution observations with Artemis-IV and the NRH. I. Type IV associated narrow-band bursts
Detection of spike-like structures near the front of type-II burstsA
High resolution observations with Artemis-JLS, (II) Type IV associated intermediate drift bursts
Oscillation of a small Hα surge in a solar polar coronal hole
Radio Observations of the January 20, 2005 X-Class Event
Fine Structure of Metric Type-IV Radio Bursts Observed with the ARTEMIS-IV Radio Spectrograph: Association with Flares and Coronal Mass Ejections
Spectral Analysis of the September 2017 Solar Energetic Particle Events
Solar Energetic Particle Events Observed by the PAMELA Mission

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



© 2003 Solar Physics Group - Montana State University