A small blowout jet was observed at the boundary of the south polar coronal hole on 2011 February 8 at around 21:00 UT .
Images from the Atmospheric Imaging Assembly ( AIA ) on board the Solar Dynamics Observatory ( SDO ) revealed an expanding loop rising from one footpoint of a compact , bipolar bright point .
Magnetograms from the Helioseismic Magnetic Imager ( HMI ) on board SDO showed that the jet was triggered by the cancelation of a parasitic positive polarity feature near the negative pole of the bright point .
The jet emission was present for 25 mins and it extended 30 Mm from the bright point .
Spectra from the EUV Imaging Spectrometer on board Hinode yielded a temperature and density of 1.6 MK and 0.9–1.7 \times 10 ^ { 8 } cm ^ { -3 } for the ejected plasma .
Line-of-sight velocities reached up to 250 km s ^ { -1 } and were found to increase with height , suggesting plasma acceleration within the body of the jet .
Evidence was found for twisting motions within the jet based on variations of the LOS velocities across the jet width .
The derived angular speed was in the range 9– 12 \times 10 ^ { -3 } rad s ^ { -1 } , consistent with previous measurements from jets .
The density of the bright point was 7.6 \times 10 ^ { 8 } cm ^ { -3 } , and the peak of the bright point ’ s emission measure occurred at 1.3 MK , with no plasma above 3 MK .