Propagating Slow Magnetoacoustic Waves along the Continuous Outflows Observed with EIS/Hinode

The high temporal relation data obtained from EIS/Hinode has been analyzed. In the 'sit-and-stare' mode observations, we focused on continuous outflows at the edge of the active region NOAA 10942 on 2007 February 20. We found that the Doppler blueshift (similar to 20-50 km s(-1)) components, in Fe XII 195 angstrom emission line, propagating with the continuous plasma outflows from the edge of the active region, with the transverse velocity ranging 140-160 km s(-1). This suggests slow magnetoacoustic wave propagation along the open field line. We also found a jet around the active region, whose transverse velocity similar to 170 km s(-1) and line-of-sight Doppler velocity similar to 150 km s(-1).