2 papers
astro-ph.HE2025
Spectral properties of the neutron star low-mass X-ray binary 4U 1636-53, XTE J1739-285 and MAXI J1816-195
Zhenyan Fei, Ming Lyu, Guobao Zhang +2
We investigated simultaneous NICER plus NuSTAR observations of three neutron star low-mass X-ray binary 4U 1636-53, XTE J1739-285 and MAXI J1816-195 using the latest reflection mod…
astro-ph.HE2024
Investigation into the origin of the soft excess in Ark 564 using principal component analysis
Ming Lyu, Zhenyan Fei, Guobao Zhang +1
We combined a principal component analysis (PCA) and spectroscopy to investigate the origin of the soft excess in narrow-line Seyfert 1 galaxy Ark 564 with XMM-Newton observations…