31 citations · 56 across the 5 of their papers we have counts for
5 papers · 1 filter
Doppler shift of the quiet region measured by meridional scans with the EUV Imaging Spectrometer onboard Hinode
N. Kitagawa, H. Hara, T. Yokoyama
Spatially averaged (> 50'') EUV spectral lines in the transition region of solar quiet regions are known to be redshifted. Because the mechanism underlying this phenomenon is uncle…
Electron density of active region outflows measured by the EUV Imaging Spectrometer onboard Hinode
Naomasa Kitagawa, Takaaki Yokoyama
In order to better understand the nature of active region outflows, the electron density was measured by using a density-sensitive line pair Fe xiv 264.78A/274.20A.Since coronal li…
Coronal upflows from edges of an active region observed with EUV Imaging Spectrometer onboard Hinode
Naomasa Kitagawa
In order to better understand the plasma supply and leakage at active regions, we investigated physical properties of the upflows from edges of active region NOAA AR10978 observed…
Multi-wavelength spectroscopic observation of EUV jet in AR 10960
Y. Matsui, T. Yokoyama, N. Kitagawa +1
We have studied the relationship between the velocity and temperature of a solar EUV jet. The highly accelerated jet occurred in the active region NOAA 10960 on 2007 June 5. Multi-…
Mode identification of MHD waves in an active region observed with Hinode/EIS
Naomasa Kitagawa, Takaaki Yokoyama, Shinsuke Imada +1
In order to better understand the possibility of coronal heating by MHD waves, we analyze Fe xii 195.12Å data observed with EUV Imaging Spectrometer (EIS) onboard Hinode. We perfor…