On a Coronal Blowout Jet: The First Observation of a Simultaneously Produced Bubble-Like Cme and a Jet-Like Cme in a Solar Event

Abstract

The coronal blowout jet is a peculiar category among various jet phenomena, of which the sheared base arch, often carrying a small filament, experiences a miniature version of blowout eruption that produces large-scale coronal mass ejection (CME). In this paper, we report such a coronal blowout jet with highresolution multi-wavelength and multi-angle observations taken from Solar Dynamics Observatory, Solar Terrestrial Relations Observatory, and Big Bear Solar Observatory. For the first time, we find that a simultaneous bubble-like and a jetlike CMEs were dynamically related to the blowout jet that showed cool and hot components next to each other. Our observational results indicate that: (1) the cool component was resulted from the eruption of the filament contained within the jet's base arch, and it further caused the bubble-like CME; (2) the jet-like CME was associated with the hot component, which was the outward moving heated plasmas generated by the reconnection of the base arch and its ambient open field lines. On the other hand, bifurcation of the jet's cool component was also observed, which was resulted from the uncoupling of the erupting filament's two legs that were highly twisted at the very beginning. Based on these results, we propose a model to interpret the coronal blowout jet, of which the external reconnection not only produces the jet-like CME but also leads to the rising of the filament. Subsequently, internal reconnection starts underneath the rising filament and thereby causes the bubble-like CME.

3He-rich Solar Energetic Particles in Helical Jets on the Sun

“…The filament in event 3 appears to be faint. A small filament of cool (T ∼0.01-0.10 MK) plasma has been often observed in blowout jets (Moore et al 2010;Hong et al 2011;Shen et al 2012;Filippov et al 2015). Figure 6 shows the evolution of the EUV jets in highcadence 171Å images.…”

Solar Active Region Coronal Jets. II. Triggering and Evolution of Violent Jets

“…Images from AIA show that, at least in many cases, the jets originate from the eruption of a small-scale filament (e.g. Shen et al 2012;Liu et al 2014;Adams et al 2014;Sterling et al 2015); following earlier works, we will call these small-scale filaments "minifilaments." Figure 1 shows a schematic of the minifilamenteruption jet-production process as proposed by Sterling et al (2015).…”

Magnetic Flux Cancellation as the Origin of Solar Quiet-region Pre-jet Minifilaments

“…Coronal jets typically show a brighten- navdeep.k.panesar@nasa.gov ing at an edge of their base (called the jet-base bright point, JBP) and a bright spire. Jets are typically observed at sites of emerging and canceling magnetic flux (Shen et al 2012;Panesar et al 2016a;Sterling et al 2016;Chandra et al 2017). The jet spire is produced by magnetic reconnection of closed field in the base with ambient open or far-reaching field; the spire plasma is driven out along the reconnected open/far-reaching field.…”