51 citations · 409 across the 25 of their papers we have counts for
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The detection of possible -ray quasi-periodic modulation with 600 days from the blazar S2 0109+22
Haoyang Zhang, Fan Wu, Benzhong Dai
In this work, we analyzed the long term gamma-ray data by a Fermi Large Area Telescope (Fermi-LAT) of blazar S2 0109+22, ranging from 2008 to 2023. The quasi-periodic oscillations…
Search for X-ray Quasi-periodicity of six AGNs using Gaussian Process method
Haoyang Zhang, Shenbang Yang, Benzhong Dai
The quasi-periodic oscillations (QPOs) found in active galactic nuclei (AGNs) are a very interesting observational phenomenon implying an unknown physical mechanism around supermas…
The optical spectral features of 27 Fermi blazars
Bing-Kai Zhang, Wei-Feng Tang, Chun-Xiao Wang +4
A spectral variation accompanied with flux variability is a commonly-observed phenomenon for blazars. In order to further investigate the optical spectral feature of blazars, we ha…