Observations of Plasma Blob Ejection from a Quiescent Prominence by Hinode Solar Optical Telescope

Point spread functions for the Solar Optical Telescope onboard Hinode

Aims. The combined point spread function (PSF) of the Broadband Filter Imager (BFI) and the Solar Optical Telescope (SOT) onboard the Hinode spacecraft is investigated. Methods. Observations of the Mercury transit from November 2006 and the solar eclipse(s) from 2007 are used to determine the PSFs of SOT for the blue, green, and red continuum channels of the BFI. For each channel large grids of...

Seismology of solar spicules based on Hinode/SOT observations

EUV lines observed with EIS/Hinode in a solar prominence

Context. During a multi-wavelength observation campaign with Hinode and ground-based instruments, a solar prominence was observed for three consecutive days as it crossed the western limb of the Sun in April 2007. Aims. We report on observations obtained on 26 April 2007 using EIS (Extreme ultraviolet Imaging Spectrometer) on Hinode. They are analysed to provide a qualitative diagnostic of the ...

Evidence for a Magnetic Flux Rope in Observations of a Solar Prominence-Cavity System

Coronal cavities are regions of low coronal emission that usually sit above solar prominences. These systems can exist for days or months before erupting. The magnetic structure of the prominence-cavity system during the quiescent period is important to understanding the pre-eruption phase. We describe observations of a coronal cavity situated above a solar prominence observed on the western li...

Formation Process of a Light Bridge Revealed with the Hinode Solar Optical Telescope

The Solar Optical Telescope (SOT) aboardHINODE successfully and continuously observed a formation process of a light bridge in a matured sunspot of the NOAA active region 10923 for several days with high spatial resolution. During its formation, many umbral dots were observed emerging from the leading edges of penumbral filaments, and intruding into the umbra rapidly. The precursor of the light...