3 papers
astro-ph.HE2021
Ultra-Short-Period Massive Black Hole Binary Candidates in LSST as LISA "Verification Binaries"
Chengcheng Xin, Zoltan Haiman
The Legacy Survey of Space and Time (LSST) by the Vera C. Rubin Observatory is expected to discover tens of millions of quasars. A significant fraction of these could be powered by…
astro-ph.GA2020
Correlation between Optical and UV Variability of Quasars
Chengcheng Xin, Maria Charisi, Zoltán Haiman +1
The variability of quasars across multiple wavelengths is a useful probe of physical conditions in active galactic nuclei. In particular, variable accretion rates, instabilities, a…
astro-ph.GA2019
Testing the relativistic Doppler boost hypothesis for the binary candidate quasar PG1302-102 with multi-band Swift data
Chengcheng Xin, Maria Charisi, Zoltan Haiman +4
The bright quasar PG1302-102 has been identified as a candidate supermassive black hole binary from its near-sinusoidal optical variability. While the significance of its optical p…