3 papers
astro-ph.HE2026
Unveiling hidden millihertz quasi-periodic oscillations in 1A 0535+262
Zihan Yang, Ruican Ma, Mariano Méndez +9
Be/X-ray binary pulsars show transient outbursts and complex timing behaviour, including millihertz quasi-periodic oscillations (QPOs), whose physical origin and energy dependence…
astro-ph.HE2025
Gaussian process analysis of type-B quasiperiodic oscillations in the black hole X-ray binary MAXI J1348-630
Yiran Wang, Ruican Ma, Haiyun Zhang +1
We analyzed Insight-HXMT data of the black hole X-ray binary MAXI J1348-630 during the type-B QPO phase of its 2019 outburst. Using the Gaussian process method, we applied an addit…
astro-ph.HE2025
The nature of an imaginary quasi-periodic oscillation in the soft-to-hard transition of MAXI J1820+070
Candela Bellavita, Mariano Méndez, Federico García +2
A recent study shows that if the power spectra (PS) of accreting compact objects consist of a combination of Lorentzian functions that are coherent in different energy bands but in…