Reconnection-Driven Changes of the Open-Closed Coronal Magnetic Field Boundary

Details Reconnection-Driven Changes of the Open-Closed Coronal Magnetic Field Boundary Reconnection-Driven Changes of the Open-Closed Coronal Magnetic Field Boundary

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh51a1598l&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SH51A-1598

Mathematics

Logic

7509 Corona, 7511 Coronal Holes, 7513 Coronal Mass Ejections (2101), 7524 Magnetic Fields, 7526 Magnetic Reconnection (2723, 7835)

Scientific paper

We present recent 3D MHD simulation results with the ARMS code that show the dynamic evolution of the coronal helmet streamer belt boundary via magnetic reconnection processes. We start with an initial multipolar PFSS configuration with a coronal null point and associated topological features located under the streamer belt, well within the closed-field region. As this configuration is slowly energized via rotational shearing flows, volumetric currents form along the separatrix boundary and during the subsequent field evolution are compressed to a thin current sheet until the numerical resistivity mimics the onset of magnetic reconnection. The reconnection scenario is analogous to the coronal breakout-reconnection in CME modeling, but here, once the closed streamer belt flux has been transferred out of the way there is interchange reconnection that opens the outer-spine fieldline and creates a narrow channel of open field surrounding the AR sepratrix boundary. This topological evolution is best understood in the context of the Antiochos (2007) conjecture about the existence of "coronal hole canals". In addition, we will discuss the implication of the MHD simulation results for creating slow, unstructured, streamer blob-like transients and as one of the potential mechanisms operating at the open-closed magnetic field boundary that could lead to the formation of the slow solar wind. This work is supported, in part, by NSF ATM-0621725 and NASA NNX08AJ04G.

Affiliated with

Also associated with

No associations

Rating

Reconnection-Driven Changes of the Open-Closed Coronal Magnetic Field Boundary does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Reconnection-Driven Changes of the Open-Closed Coronal Magnetic Field Boundary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reconnection-Driven Changes of the Open-Closed Coronal Magnetic Field Boundary will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1091784