Search Publications
Measures of the Soft X-ray Excess as an Eigenvector 1 Parameter for Active Galactic Nuclei
Marziani, P.; Perea, J.; del Olmo, A. +2 more
We present a preliminary analysis of X-ray data of quasars in the context of the 4D eigenvector 1 parameter space (Sulentic et al. 2000a, b). 4DE1 serves as a surrogate H-R diagram for representing empirical diversity among quasars and identifying the physical drivers of the diversity. The soft X-ray spectral index (Γsoft) was adopted a…
Spicules Intensity Oscillations in SOT/HINODE Observations
Ahangarzadeh Maralani, A. R.; Tavabi, E.; Ajabshirizadeh, A. +1 more
We study the coherency of solar spicules intensity oscillations with increasing height above the solar limb in quiet Sun, active Sun and active region using observations from HINODE/SOT. Existence of coherency up to transition region strengthens the theory of the coronal heating and solar wind, through energy transport and photospheric oscillation…