activity
20022026
most citedThe Sizes of the X-ray and Optical Emission Regions of RXJ1131-1231

233 citations · 1.5k across the 30 of their papers we have counts for

collaborators

30 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.GA2021★ 162 cited

A characteristic optical variability timescale in astrophysical accretion disks

Colin J. Burke, Yue Shen, Omer Blaes +8

Accretion disks around supermassive black holes in active galactic nuclei produce continuum radiation at ultraviolet and optical wavelengths. Physical processes in the accretion fl…

astro-ph.GA2021★ 9 cited

Resolving the inner accretion flow towards the central supermassive black hole in SDSS J1339+1310

V. N. Shalyapin, L. J. Goicoechea, C. W. Morgan +2

We studied the accretion disc structure in the doubly imaged lensed quasar SDSS J1339+1310 using -band light curves and UV-visible to near-IR (NIR) spectra from the first 11 obs…

astro-ph.GA2020★ 18 cited

Near infrared and optical continuum emission region size measurements in the gravitationally lensed quasars Q0957+561 and SBS0909+532

Matthew A. Cornachione, Christopher W. Morgan, Hayden R. Burger +5

We present a microlensing analysis of updated light curves in three filters, --band, --band, and --band, for the gravitationally lensed quasars Q0957+561 and SBS0909+532.…

astro-ph.HE2020★ 36 cited

Quasar Microlensing Variability Studies Favor Shallow Accretion Disk Temperature Profiles

Matthew A. Cornachione, Christopher W. Morgan

We compare the microlensing-based continuum emission region size measurements in a sample of 15 gravitationally lensed quasars with estimates of luminosity-based thin disk sizes to…