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A small blowout jet was observed at the boundary of the south polar coronalhole on 2011 February 8 at around 21:00 UT. Images from the Atmospheric ImagingAssembly (AIA) on board the Solar Dynamics Observatory (SDO) revealed anexpanding loop rising from one footpoint of a compact, bipolar bright point.Magnetograms from the Helioseismic Magnetic Imager (HMI) on board SDO showedthat the jet was triggered by the cancelation of a parasitic positive polarityfeature near the negative pole of the bright point. The jet emission waspresent for 25 mins and it extended 30 Mm from the bright point. Spectra fromthe EUV Imaging Spectrometer on board Hinode yielded a temperature and densityof 1.6 MK and 0.9-1.7 x 10^8 cm^-3 for the ejected plasma. Line-of-sightvelocities reached up to 250 km/s and were found to increase with height,suggesting plasma acceleration within the body of the jet. Evidence was foundfor twisting motions within the jet based on variations of the LOS velocitiesacross the jet width. The derived angular speed was in the range 9-12 x 10^-3rad s^-1, consistent with previous measurements from jets. The density of thebright point was 7.6 x 10^8 cm^-3, and the peak of the bright point's emissionmeasure occurred at 1.3 MK, with no plasma above 3 MK.

A Coronal Hole Jet Observed with Hinode and the Solar Dynamics Observatory