High-resolution spectroscopy of a chromospheric subflare: Ca II K line measurement

Anin vestigationof the quiet and active (subflare) solar atmosphere is made using high spatial and spectral resolution observations of the Ca II K line performed at the VTT, Observatorio del Teide, Tenerife. Spectral characteristics IK1, IK2, IK3, integrated intensity Iint, separations of K1 minima SepK1, separations of K2 maxima SepK2 and their ratios are compared for both quiet and active regions. Preliminary results are discussed

Dynamics of the solar photosphere and chromosphere derived from high resolution Fe I and Ca II spectra

The analysis of high-resolution spectra of the Fe I (522.5 nm, 557.6 nm) and Ca II K (393.3 nm) lines in the solar photosphere and chromosphere is presented. A dynamic coupling of the photosphere and chromosphere was determined from the ratios of both the photospheric and chromospheric line characteristics. All results are discussed for quiet and plage regions. It is found that inthe plage regionthe meanv alues of K1, K2, K3 intensities inCa II K are increased 2, 5 and 6 times, respectively, as compared to the quiet region. The mean values of Fe I line core intensities increased in plage only 1.32 and 1.64 times for the magnetic non-sensitive and magnetic sensitive line, respectively. The ranges of Fe I core intensity values are larger for the magnetic sensitive line than for the magnetic non-sensitive line