Wednesday

Ellerman Bombs (EBs) are small-scale, impulsive photospheric brightenings with estimated energies comparable to micro-flares. Recent IRIS observations show EB signatures in lines sensitive to transition region temperatures, hinting that the photosphere is superheated to transition region temperatures during these events. We use the 1 dimensional RADYN code to simulate the effect of the atmosphere due to the sudden deposition of energies across the photosphere and chromosphere. We use the MULTI line synthesis code to obtain the resultant EB diagnostic lines of Halpha and Ca II 8542A from these models to find that EB line profiles are most likely formed when the energy is deposited around the temperature minimum region, resulting in temperature enhancements of ~2000K. We also use the RH line synthesis code to obtain Mg II h & k line profiles in partial redistribution, to compare the models to the IRIS observations. We show that a scenario where Mg II h & k lines show enhancement, while maintaining traditional EB line profiles in Halpha and Ca II 8542A is not possible with the described model setup, implying that EB atmospheres are not yet fully understood.