Zhenfeng Sheng
0000-0001-6938-8670
11 papers found
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Understanding Broad Mg ii Variability in Quasars with Photoionization: Implications for Reverberation Mapping and Changing-look Quasars
An Ongoing Mid-infrared Outburst in the White Dwarf 0145+234: Catching in Action the Tidal Disruption of an Exoasteroid?
Discovery of an Mg ii Changing-look Active Galactic Nucleus and Its Implications for a Unification Sequence of Changing-look Active Galactic Nuclei
SDSS J153636.22+044127.0 and Its Analogs: Shocked Outflows, Not Active Binary Black Holes
Initial results from a systematic search for changing-look active galactic nuclei selected via mid-infrared variability
SDSS J153636.22+044127.0 and its analogues: shocked outflows, not active binary black holes
Infrared Echo and Late-stage Rebrightening of Nuclear Transient Ps1-10adi: Exploring the Torus with Tidal Disruption Events in Active Galactic Nuclei
Long-term decline of the mid-infrared emission of normal galaxies: dust echo of tidal disruption flare?
The Carbon and Nitrogen Abundance Ratio in the Broad Line Region of Tidal Disruption Events
Mid-infrared Variability of Changing-look AGNs
Leaked LyαEmission: An Indicator of the Size of Quasar Absorption Outflows
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