Ellerman Bombs with jets: cause and effect

Reid, A, Mathioudakis, M, Scullion, E, Doyle, JG, Shelyag, Sergiy and Gallagher, P 2015, Ellerman Bombs with jets: cause and effect, Astrophysical journal, vol. 805, no. 1, pp. 1-9, doi: 10.1088/0004-637X/805/1/64.

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Title Ellerman Bombs with jets: cause and effect
Author(s) Reid, A
Mathioudakis, M
Scullion, E
Doyle, JG
Shelyag, SergiyORCID iD for Shelyag, Sergiy orcid.org/0000-0002-6436-9347
Gallagher, P
Journal name Astrophysical journal
Volume number 805
Issue number 1
Article ID 64
Start page 1
End page 9
Total pages 9
Publisher IOP Publishing
Place of publication Bristol, Eng.
Publication date 2015-05-20
ISSN 0004-637X
1538-4357
Keyword(s) magnetic reconnection
magnetohydrodynamics (MHD)
Sun: atmosphere
Sun: magnetic fields
Sun: photosphere
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Summary Ellerman Bombs (EBs) are thought to arise as a result of photospheric magnetic reconnection. We use data from the Swedish 1 m Solar Telescope to study EB events on the solar disk and at the limb. Both data sets show that EBs are connected to the foot points of forming chromospheric jets. The limb observations show that a bright structure in the Hα blue wing connects to the EB initially fueling 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. In the disk data set, 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. 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 s-1, while their chromospheric counterparts range from 50 to 80 km s-1. MURaM simulations of quiet Sun reconnection show that micro-jets with properties similar to those of the observations follow the line of reconnection in the photosphere, with associated Hα brightening at the location of increased temperature.
Language eng
DOI 10.1088/0004-637X/805/1/64
Field of Research 0201 Astronomical And Space Sciences
0305 Organic Chemistry
0306 Physical Chemistry (Incl. Structural)
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2015, The American Astronomical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30114947

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