3 papers
astro-ph2008
Exact solutions for standing kink modes of the longitudinally stratified coronal loops
N. Dadashi, H. Safari, S. Nasiri +1
The influence of longitudinal structuring on the fast kink modes of coronal loops is investigated. Analytical dispersion relations and mode profiles are derived for the second-orde…
astro-ph2003
A Phenomenological Model for QSOs
S. Nasiri, F. Tabatabaei
Using LBQS data, it seems that the predictions of the model is confirmed by observations. The behavior of comoving density versus redshift is consistent with LDDE for QSQs. Conside…
astro-ph1999
Quasars as Extreme Case of Galaxies
S. Nasiri, V. Rezania
We introduce a phenomenological investigation of the evolution and large scale distribution of quasars using a modified version of the Field and Colgate gravitational contraction m…