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We present a multiwavelength analysis of two homologous, short lived,impulsive flares of GOES class M1.4 and M7.3, that occurred from a verylocalized mini-sigmoid region within the active region NOAA 12673 on 2017September 7. Both flares were associated with initial jet-like plasma ejectionwhich for a brief amount of time moved toward east in a collimated mannerbefore drastically changing direction toward southwest. Non-linear force-freefield extrapolation reveals the presence of a compact double-decker flux ropeconfiguration in the mini-sigmoid region prior to the flares. A set of openfield lines originating near the active region which were most likelyresponsible for the anomalous dynamics of the erupted plasma, gave the earliestindication of an emerging coronal hole near the active region. The horizontalfield distribution suggests a rapid decay of the field above the active region,implying high proneness of the flux rope system toward eruption. In view of thelow coronal double-decker flux ropes and compact extreme ultra-violet (EUV)brightening beneath the filament along with associated photospheric magneticfield changes, our analysis supports the combination of initial tether-cuttingreconnection and subsequent torus instability for driving the eruption.

Eruptive-Impulsive Homologous M-class Flares Associated with Double-Decker Flux Rope Configuration in Mini-Sigmoid of NOAA 12673