Ellerman Bombs (EBs) are often found co-spatial with bipolar photospheric magnetic fields. We use Hα imaging spectroscopy along with Fe I 6302.5 \AA\ spectro-polarimetry from the Swedish 1-m Solar Telescope (SST), combined with data from the Solar Dynamic Observatory (SDO) to study EBs and the evolution of the local magnetic fields at EB locations. The EBs are found via an EB detection and tracking algorithm. We find, using NICOLE inversions of the spectro-polarimetric data, that on average (3.43 ± 0.49) x 1024 ergs of stored magnetic energy disappears from the bipolar region during the EBs burning. The inversions also show flux cancellation rates of 1014 - 1015 Mx s−1, and temperature enhancements of 200 K at the detection footpoints. We investigate near-simultaneous flaring of EBs due to co-temporal flux emergence from a sunspot, which shows a decrease in transverse velocity when interacting with an existing, stationary area of opposite polarity magnetic flux and the EBs are formed. We also show that these EBs can get fueled further by additional, faster moving, negative magnetic flux regions.
@article{arxiv.1603.07100,
title = {Magnetic Flux Cancellation in Ellerman Bombs},
author = {A. Reid and M. Mathioudakis and J. G. Doyle and E. Scullion and V. Henriques and C. Nelson and T. Ray},
journal= {arXiv preprint arXiv:1603.07100},
year = {2016}
}