2 papers
astro-ph.HE2025
Fast Transitions of X-ray Variability in the Neutron Star Low Mass X-ray Binary Cygnus X-2
Liang Zhang, Mariano Méndez, Hua Feng +12
We present a spectral-timing analysis of two NICER observations of the weakly magnetized neutron star low-mass X-ray binary Cygnus X-2. During these observations, we detect a rapid…
astro-ph.HE2024
A timing view of the additional high-energy spectral component discovered in the black hole candidate Swift J1727.8-1613
Zi-Xu Yang, Liang Zhang, Shuang-Nan Zhang +15
We present an energy-dependent analysis for the type-C quasi-periodic oscillations (QPOs) observed in the black hole X-ray binary Swift J1727.8-1613 using Insight-HXMT observations…