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Rapid Variability and Broadband Spectral Modeling in the Flaring Activity of BL Lacertae
Xin Chang, Dingrong Xiong, Chenxu Liu +17
We report a multi-wavelength study of two flaring episodes of the blazar BL Lacertae during MJD 60500-60800 (9 July 2024 - 5 May 2025). The source reached a daily-averaged -ray…
Simultaneous Multi-band Optical Follow-up Observations of a Gamma-Ray Flare in BL Lacertae
X. Chang, D. R. Xiong, Chenxu Liu +17
On October , BL Lacertae () experienced one of its brightest gamma-ray flares. We conducted simultaneous follow-up observations in the , , , , ,…
An observational test of the plasma lensing effect using QSOs with and without MgII absorption
Xinzhong Er, Yiping Shu, Chenxu Liu
Radio wave propagation can be perturbed by compact ionized gas clumps through plasma lensing, which induces frequency dependent magnification and may distort the observed number co…
The Intermediate-Mass Black Hole Reverberation Mapping Project: Stable Optical Continuum Lags of an IMBH in the Dwarf Galaxy NGC 4395 Over Years
Yu Pan, Hengxiao Guo, Chenxu Liu +15
NGC 4395 is a nearby dwarf spiral galaxy hosting an active galactic nucleus (AGN) powered by an intermediate-mass black hole (IMBH, --). Re…