We calculate photometricredshifts from the Sloan Digital Sky SurveyData Release 2 (SDSS DR2) Galaxy Sample using artificial neural networks (ANNs). Different in
We present a case study of the relevance of the radially pulsational instability of a two-temperature accretion disk around a neutron star to anomalous X-ray pu
Using the method of Gaussian Fit Separation of Average Profile (GFSAP), we re-examine the average profiles of nine pulsars at several frequencies,ranging from 4