Solar Quiet Region Jet by Eruption of Minifilament and Associated Change in Magnetic Flux

Аннотация

We observe a coronal jet around 22 : 08 UT on March 23, 2017, in a quiet region towards the north-east of the solar disk. A minifilament eruption leads to this jet. We analyze dynamics of the minifilament from its formation until its eruption. We observe that the minifilament starts forming around 15 : 50 UT. Then at a later time, it disappears but again appears and finally erupts as a blow-out jet around 22 : 08 UT. We study the evolution of photospheric magnetic field beneath the minifilament. Initially, we observe subsequent increase and decrease of positive magnetic flux. Prior to the initiation of the eruption, positive magnetic flux shows a continuous decrease until the minifilament disappears. The positive magnetic flux increases and decreases due to new positive flux emergence and cancellation of positive magnetic flux with negative magnetic flux, respectively.