A MODEL FOR MAGNETICALLY COUPLED SYMPATHETIC ERUPTIONS

Journal Article · Sat Oct 01 04:00:00 EDT 2011 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/739/2/L63· OSTI ID:21565414

Toeroek, T; Titov, V S; Mikic, Z; Linker, J A ^[1]; Panasenco, O ^[2]; Reeves, K K ^[3]; Velli, M ^[4]; De Toma, G ^[5]

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1. Predictive Science, Inc., 9990 Mesa Rim Road, Suite 170, San Diego, CA 92121 (United States)
2. Helio Research, La Crescenta, CA 91214 (United States)
3. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
4. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)
5. HAO/NCAR, P.O. Box 3000, Boulder, CO 80307-3000 (United States)

Sympathetic eruptions on the Sun have been observed for several decades, but the mechanisms by which one eruption can trigger another remain poorly understood. We present a three-dimensional MHD simulation that suggests two possible magnetic trigger mechanisms for sympathetic eruptions. We consider a configuration that contains two coronal flux ropes located within a pseudo-streamer and one rope located next to it. A sequence of eruptions is initiated by triggering the eruption of the flux rope next to the streamer. The expansion of the rope leads to two consecutive reconnection events, each of which triggers the eruption of a flux rope by removing a sufficient amount of overlying flux. The simulation qualitatively reproduces important aspects of the global sympathetic event on 2010 August 1 and provides a scenario for the so-called twin filament eruptions. The suggested mechanisms are also applicable for sympathetic eruptions occurring in other magnetic configurations.

• OSTI ID: 21565414
• Journal Information: Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters Journal Issue: 2 Vol. 739; ISSN 2041-8205
• Country of Publication: United States
• Language: English

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