... cadence H-alpha images from the U.S. National Solar Observatory at Sacramento Peak. http://hiraiso.crl.go.jp/ - Hiraiso Solar Terrestrial Research Center of the Communications Research Laboratory (Japan): solar radio spectra, H-alpha images, geomagnetic ...
... cadence H-alpha images from the U.S. National Solar Observatory at Sacramento Peak. http://hiraiso.crl.go.jp/ - Hiraiso Solar Terrestrial Research Center of the Communications Research Laboratory (Japan): solar radio spectra, H-alpha images, geomagnetic ...
... S. Frolova, N.S. Meshalkina 'A fast and slow chromospheric response of H-alpha and H-beta lines to effects of accelerated particles in the 26th April 2003 solar flare' IHY-ISWI Regional Meeting,7-13 September 2009, Sibenik, Croatia . ...