The chromosphere above a $\delta$-sunspot in the presence of fan-shaped jets

摘要: $\delta$-sunspots are known to be favourable locations for fast and energetic events like flares CMEs. The photosphere of this type sunspots has been thoroughly investigated in the past three decades. atmospheric conditions chromosphere not so well known, however. his study is focused on a $\delta$-sunspot that harbours series fan-shaped jets its penumbra . aim establish magnetic field topology temperature distribution presence chromosphere. We use data from Swedish 1-m Solar Telescope (SST) Dynamics Observatory. invert spectropolarimetric FeI 6302~\AA\ CaII ~8542~\AA\ SST using non-LTE inversion code NICOLE estimate configuration, velocity structure A loop-like observed emerge sunspot. launched structure. Magnetic reconnection between emerging pre-existing vertical suggested by hot plasma patches interface two fields. height at which takes place located $\log \tau_{500} = -2$ -3$. vector maps show stationary configuration during whole observation.