Responsibility of a Filament Eruption for the Initiation of a Flare, CME, and Blast Wave, and its Possible Transformation into a Bow Shock

Abstract

Multi-instrument observations of two filament eruptions on 24 February and 11 May 2011 suggest the following updated scenario for eruptive flare, CME and shock wave evolution. An initial destabilization of a filament results in stretching out of magnetic threads belonging to its body and rooted in the photosphere along the inversion line. Their reconnection leads to i) heating of parts of the filament or its environment, ii) initial development of the flare arcade cusp and ribbons, and iii) increasing similarity of the filament to a curved flux rope and its acceleration. Then the pre-eruption arcade enveloping the filament gets involved in reconnection according to the standard model and continues to form the flare arcade and ribbons. The poloidal magnetic flux in the curved rope developing from the filament progressively increases and forces its toroidal expansion. This flux rope impulsively expands and produces an MHD disturbance, which rapidly steepens into a shock. The shock passes through the arcade expanding above the filament and then freely propagates ahead of the CME like a decelerating blast wave for some time. If the CME is slow, then the shock eventually decays. Otherwise, the frontal part of the shock changes into the bow-shock regime. This was observed for the first time in the 24 February 2011 event. When reconnection ceases, the flux rope relaxes and constitutes the CME core-cavity system. The expanding arcade develops into the CME frontal structure. We also found that reconnection in the current sheet of a remote streamer forced by the shock's passage results in a running flare-like process within the streamer responsible for a type II burst. The development of dimming and various associated phenomena are discussed.

arXiv comment35 pages, 16 figures. For associated movie files, see http://ssrt.iszf.irk.ru/~grechnev/papers/responsibility_cmes_shocks/ Accepted for publication in Solar Physics. The final publication is available at Springer via http://dx.doi.org/10.1007/s11207-014-0621-8

References in corpus (22)

• A Model for Solar Coronal Mass Ejections
• Observing Flux Rope Formation During the Impulsive Phase of a Solar Eruption
• Direct Detection of a CME-Associated Shock in LASCO White Light Images
• Combined STEREO/RHESSI study of CME acceleration and particle acceleration in solar flares
• Observations and Interpretation of a Low Coronal Shock Wave Observed in the EUV by the SDO/AIA
• The Genesis of an Impulsive Coronal Mass Ejection observed at Ultra-High Cadence by AIA on SDO
• A Comparative Study of Confined and Eruptive Flares in NOAA AR 10720
• Large-scale Bright Fronts in the Solar Corona: A Review of "EIT waves"
• The height of a white-light flare and its hard X-ray sources
• Initiation of CME and Associated Flare Caused by Helical Kink Instability Observed by SDO/AIA
• Coronal Shock Waves, EUV waves, and Their Relation to CMEs. I. Reconciliation of "EIT waves", Type II Radio Bursts, and Leading Edges of CMEs
• Absorption Phenomena and a Probable Blast Wave in the 13 July 2004 Eruptive Event
• An Analytical Model Probing the Internal State of Coronal Mass Ejections Based on Observations of Their Expansions and Propagations
• A Search for Ionized Gas in the Draco and Ursa Minor Dwarf Spheroidal Galaxies
• Coronal Shock Waves, EUV Waves, and Their Relation to CMEs. III. Shock-Associated CME/EUV Wave in an Event with a Two-Component EUV Transient
• RHESSI and SDO/AIA observations of the chromospheric and coronal plasma parameters during a solar flare
• Coronal Shock Waves, EUV waves, and their Relation to CMEs. II. Modeling MHD Shock Wave Propagation Along the Solar Surface, Using Nonlinear Geometrical Acoustics
• Imaging of the solar atmosphere by the Siberian Solar Radio Telescope at 5.7 GHz with an enhanced dynamic range
• Microwave and EUV Observations of an Erupting Filament and Associated Flare and CME
• A Challenging Solar Eruptive Event of 18 November 2003 and the Causes of the 20 November Geomagnetic Superstorm. II. CMEs, Shock Waves, and Drifting Radio Bursts
• A Challenging Solar Eruptive Event of 18 November 2003 and the Causes of the 20 November Geomagnetic Superstorm. I. Unusual History of an Eruptive Filament
• An Updated View of Solar Eruptive Flares and Development of Shocks and CMEs: History of the 2006 December 13 GLE-Productive Extreme Event

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• The 26 December 2001 Solar Eruptive Event Responsible for GLE63. II. Multi-Loop Structure of Microwave Sources in a Major Long-Duration flare
• The 26 December 2001 Solar Eruptive Event Responsible for GLE63. III. CME, Shock Waves, and Energetic Particles
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