TY - BOOK AU - Sherehan Mohamed Ahmed Shehata AU - Alaa Ibrahim Hussein , AU - Mohammed Rassem , TI - Investigation of spectral - temporal correlations in bursts from the magnetar SGR 1900+14 / PY - 2012/// CY - Cairo : PB - Sherehan Mohamed Ahmed Shehata , KW - Bursts KW - Gamma rays KW - Individual (SGR1900 + 14) N1 - Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Astronomy and Meteorology; Issued also as CD N2 - Magnetars are newly discovered cosmic sources of high energy radiations that emit short intense bursts of x-rays and {u03D3} -rays . Studying the spectral and temporal properties of these bursts allows us to identify the physical mechanism responsible for their emission and to probe the interaction of radiation and matter at extreme conditions of temperature gravity and magnetic field that cannot be reproduced in earth - based laboratories or particle accelerators UR - http://172.23.153.220/th.pdf ER -