Ellerman Bombs with Jets: Cause and Effect

A. Reid, M. Mathioudakis, E. Scullion, J. G. Doyle, S. Shelyag, P. Gallagher

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

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 H$\alpha$ 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 H$\alpha$. 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 to500 km with a lifetime of a few minutes. Observed velocities of themicro-jets are approximately 5-10 km s$^{-1}$, while their chromospheric counterparts range from 50-80 km s$^{-1}$. 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 H$\alpha$ brightening at the location of increased temperature.
Original language English 64 9 The Astrophysical Journal 805 1 https://doi.org/10.1088/0004-637X/805/1/64 Published - 20 May 2015

Bibliographical note

eprint arXiv:1503.05359

Keywords

• Astrophysics - Solar and Stellar Astrophysics