Taro Sakao

TL;DR: The Hinode satellite as discussed by the authors is the successor to the Yohkoh mission, which aims to understand how magnetic energy gets transferred from the photosphere to the upper atmosphere and results in explosive energy releases.

TL;DR: The X-ray Telescope (XRT) of the Hinode mission as mentioned in this paper provides an unprecedented combination of spatial and temporal resolution in solar coronal studies, and the high sensitivity and broad dynamic range of XRT, coupled with the spacecraft's onboard memory capacity and the planned downlink capability, will permit a broad range of solar studies over an extended period of time for targets ranging from quiet Sun to X-flares.

TL;DR: Hinode observations of polar coronal holes reveal that x-ray jets have two distinct velocities: one near the Alfvén speed (∼800 kilometer per second) and another near the sound speed (200 kilometers per second).

TL;DR: The Hard X-ray Telescope (HXT) as mentioned in this paper is a Fourier-synthesis imager that takes images of solar flares simultaneously in four energy bands, nominally 15 (or 19) −24, 24 −35, 35 −57, and 57 −100 keV, with an ultimate angular resolution as fine as ∼ 5 arc sec and a time resolution 0.5 s.

TL;DR: The most extensive study of polar jet formation and evolution from within both the north and south polar coronal holes so far was performed by Shimojo et al. as discussed by the authors, who measured the apparent outward velocity, the height, the width and the lifetime of the jets.