activity
20012026
most citedThe Sizes of the X-ray and Optical Emission Regions of RXJ1131-1231

233 citations · 3.9k across the 96 of their papers we have counts for

collaborators

96 papers

astro-ph.HE2026

The X-Ray Continuum Emission Region in the Lensed Quasar SDSS J133907.23+131038.6 is Much Smaller than the Accretion Disk

Christopher W. Morgan, James B. Margeson, Gilberto Garcia +4

We analyze microlensing variability in 15 seasons of optical monitoring data and 4 epochs of new X-ray observations of the doubly-imaged gravitationally lensed quasar SDSS J133907.…

astro-ph.HE2023

NuSTAR Hard X-ray Monitoring of Gravitationally Lensed Quasar RX J1131-1231

Cora A. DeFrancesco, Xinyu Dai, Mark Mitchell +2

The X-ray emission from active galactic nuclei (AGN) is believed to come from a combination of inverse Compton scattering of photons from the accretion disk and reprocessing of the…

astro-ph.HE2023★ 4 cited

High frequency breaks in optical active galactic nuclei power spectral density

Heechan Yuk, Xinyu Dai

Context. Variability is a ubiquitous feature of active galactic nuclei (AGNs), and the characterisation of the variability is crucial to constrain its physical mechanism and proper…

astro-ph.GA2022

Revealing AGNs Through TESS Variability

Helena P. Treiber, Jason T. Hinkle, Michael M. Fausnaugh +7

We used Transiting Exoplanet Survey Satellite (TESS) data to identify 29 candidate active galactic nuclei (AGNs) through their optical variability. The high-cadence, high-precision…

astro-ph.GA2022

Variability Selected Active Galactic Nuclei from ASAS-SN Survey: Constraining the Low Luminosity AGN Population

Heechan Yuk, Xinyu Dai, T. Jayasinghe +5

Low luminosity active galactic nuclei (LLAGN) probe accretion physics in the low Eddington regime and can provide additional clues about galaxy evolution. AGN variability is ubiqui…

astro-ph.GA2021★ 2 cited

Optical Confirmation of X-ray selected Galaxy clusters from the Swift AGN and Cluster survey with MDM and Pan-STARRS Data (Paper III)

Saloni Bhatiani, Xinyu Dai, Rhiannon D. Griffin +3

To understand structure formation in the universe and impose stronger constraints on the cluster mass function and cosmological models, it is important to have large galaxy cluster…