Solar sympathetic filament eruptions usually involve two or more filament eruptions that occur simultaneously or successively within a relatively short time interval with a certain causal linkage. The eruption of one filament may have an effect on another one, thus resulting in the eruption of the other filament simultaneously or successively.
Click here for original story, Interaction between two filaments plays a key role in sympathetic filament eruptions
Source: Phys.org