We present a phase-coherent timing analysis of the intermittent accreting millisecond pulsar SAX J1748.9−2021. A new timing solution for the pulsar spin period and the Keplerian binary orbital parameters was achieved by phase connecting all episodes of intermittent pulsations visible during the 2001 outburst. We investigate the pulse profile shapes, their energy dependence and the possible infl...

This research was conducted to study and classify the physico-chemicalproperties of soil, yield components of wheat and to determine the significance ofthese parameters on the grain yield formation. In this research, seven statisticalmethods consisting of simple correlation analysis (SCA), multiple linear regression(MLR), stepwise regression (SR), factor analysis (FA), principal componentanalys...

We have studied the performance of global 2 tting applied to low-resolution X-ray spectroscopy, focusing on the retrieval of source parameters , with emphasis on the coronal metallicity. The study has been conducted by tting large numbers of simulated spectra with known characteristics , and studying the distribution of the best-t parameters, using the responses of the LECS detector onboard the...