53 citations · 147 across the 11 of their papers we have counts for
12 papers
Modeling Multi-band Active Galactic Nuclei Lightcurves Using an Self-supervised Attentive Neural Process Network
Tzuken Shen, Chengcheng Xin, Joshua Fagin +3
With the the Legacy Survey of Space and Time (LSST), observations of tens of millions of quasars are expected. We present a machine-learning framework based on an attentive neural…
Self-lensing flares from black hole binaries V: systematic searches in LSST
Kevin Park, Zoltan Haiman, Chengcheng Xin +3
The Vera C. Rubin Observatory has now seen first light, and over a 10 year duration, LSST is projected to catalogue tens of millions of quasars, many of which are expected to be as…
Identifying Compact Chirping SMBHBs in LSST using Bayesian Analysis
Chengcheng Xin, Maximiliano Isi, Will M. Farr +1
The Legacy Survey of Space and Time (LSST) is expected to observe up to million quasars in the next decade. In this work, we show that it is possible to use such data t…
Self-lensing flares from black hole binaries IV: the number of detectable shadows
Kevin Park, Chengcheng Xin, Jordy Davelaar +1
Sub-parsec supermassive black hole (SMBH) binaries are expected to be common in active galactic nuclei (AGN), as a result of the hierarchical build-up of galaxies via mergers. Whil…
Identifying the electromagnetic counterparts of LISA massive black hole binaries in archival LSST data
Chengcheng Xin, Zoltan Haiman
The Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) will catalogue the light-curves of up to 100 million quasars. Among these there can be up to approximately 10…
Massive Black Hole Binaries as LISA Precursors in the Roman High Latitude Time Domain Survey
Zoltán Haiman, Chengcheng Xin, Tamara Bogdanović +27
With its capacity to observe faint active galactic nuclei (AGN) out to redshift , Roman is poised to reveal a population of b…
Tidal Peeling Events: low-eccentricity tidal disruption of a star by a stellar-mass black hole
Chengcheng Xin, Zoltan Haiman, Rosalba Perna +2
Close encounters between stellar-mass black holes (BHs) and stars occur frequently in dense star clusters and in the disks of active galactic nuclei (AGNs). Recent studies have sho…
Dissecting the microphysics behind the metallicity-dependence of massive stars radii
Chengcheng Xin, Mathieu Renzo, Brian D. Metzger
Understanding the radii of massive stars throughout their evolution is important to answering numerous questions about stellar physics, from binary interactions on the main sequenc…
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…
Multimessenger pulsar timing array constraints on supermassive black hole binaries traced by periodic light curves
Chengcheng Xin, Chiara M. F. Mingarelli, Jeffrey S. Hazboun
Supermassive black hole binary systems (SMBHBs) emitting gravitational waves may be traced by periodic light curves. We assembled a catalog of 149 such periodic light curves, and u…
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…
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…