Search Publications
Accretion torque reversals in GRO J1008-57 revealed by Insight-HXMT
Wang, W.; Huang, Y.; Wang, C. +92 more
GRO J1008-57, as a Be/X-ray transient pulsar, is considered to have the highest magnetic field in known neutron star X-ray binary systems. Observational data of the X-ray outbursts in GRO J1008-57 from 2017 to 2020 were collected by the Insight-HXMT satellite. In this work, the spin period of the neutron star in GRO J1008-57 was determined to be a…
Redshift evolution of X-ray spectral index of quasars observed by XMM-NEWTON/SDSS
Misra, R.; Hayman, Z. M.; Shehata, SH. M. +2 more
We study the X-ray spectral evolution of quasars with red-shift using a sample of 1280 quasars constructed by cross-referencing the XMM-Newton 3 XMM - DR 7 and the optical SDSS-DR14 catalogues. The sources were selected to have a minimum detected X-ray counts >600 and which were not affected by high background. The sample redshift distribution …
A Suzaku study of the low mass X-ray binary Aquila X-1 in the different states
Abdelbar, Ahmed M.; Beheary, M. M.; Abdelfatah, Ahmed S. +1 more
We present a Suzaku X-ray study for the neutron star low mass X-ray binary Aquila X-1. The observations of the system carried out during three times in 2011 from October 18 to October 24, where the repeated X-ray transient Aquila X-1 was in the rising phase of the outburst. During this period the source was successfully detected in its different s…