2 papers
astro-ph.HE2024
The weakness of soft X-ray intensity: possible physical reason for weak line quasars
Jiancheng Wu, Qingwen Wu, Chichuan Jin +8
Weak-line quasars (WLQs) are a notable group of active galactic nuclei (AGNs) that show unusually weak UV lines even though their optical-UV continuum shapes are similar to those o…
astro-ph.GA2023
Steep Balmer decrement in weak AGNs may be not caused by dust extinction: clues from low-luminosity AGNs and changing-look AGNs
Jiancheng Wu, Qingwen Wu, Hanrui Xue +2
The hydrogen Balmer decrement (e.g., ) is widely adopted as an indicator of the internal reddening of active galactic nuclei (AGNs). This is challenged by some low-lumin…