English

Ellerman Bombs with Jets: Cause and Effect

Solar and Stellar Astrophysics 2015-06-26 v1

Abstract

Ellerman Bombs (EBs) are thought to arise as a result of photospheric magnetic reconnection. We use data from the Swedish 1-m Solar Telescope (SST), to study EB events on the solar disk and at the limb. Both datasets show that EBs are connected to the foot-points of forming chromospheric jets. The limb observations show that a bright structure in the Hα\alpha blue wing connects to the EB initially fuelling it, leading to the ejection of material upwards. The material moves along a loop structure where a newly formed jet is subsequently observed in the red wing of Hα\alpha. In the disk dataset, an EB initiates a jet which propagates away from the apparent reconnection site within the EB flame. The EB then splits into two, with associated brightenings in the inter-granular lanes (IGLs). Micro-jets are then observed, extending to 500 km with a lifetime of a few minutes. Observed velocities of the micro-jets are approximately 5-10 km s1^{-1}, while their chromospheric counterparts range from 50-80 km s1^{-1}. MURaM simulations of quiet Sun reconnection show that micro-jets with similar properties to that of the observations follow the line of reconnection in the photosphere, with associated Hα\alpha brightening at the location of increased temperature.

Keywords

Cite

@article{arxiv.1503.05359,
  title  = {Ellerman Bombs with Jets: Cause and Effect},
  author = {A. Reid and M. Mathioudakis and E. Scullion and J. G. Doyle and S. Shelyag and P. Gallagher},
  journal= {arXiv preprint arXiv:1503.05359},
  year   = {2015}
}

Comments

9 pages, 9 figures, 2 supplementary movies. Accepted to ApJ

R2 v1 2026-06-22T08:56:01.036Z