Search Results - "Morgan, Christopher W"

NuSTAR Hard X-Ray Monitoring of Gravitationally Lensed Quasar RX J1131–1231 by DeFrancesco, Cora A., Dai, Xinyu, Mitchell, Mark, Zoghbi, Abderahmen, Morgan, Christopher W.

“…Abstract The X-ray emission from active galactic nuclei is believed to come from a combination of inverse Compton scattering of photons from the accretion disk…”
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Accretion Disk Size Measurement and Time Delays in the Lensed Quasar WFI 2033-4723 by Morgan, Christopher W., Hyer, Gregory E., Bonvin, Vivien, Mosquera, Ana M., Cornachione, Matthew, Courbin, Frederic, Kochanek, Christopher S., Falco, Emilio E.

“…We present 13 seasons of R-band photometry of the quadruply lensed quasar WFI 2033-4723 from the 1.3 m SMARTS telescope at CTIO and the 1.2 m Euler Swiss…”
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Optical and Near-infrared Continuum Emission Region Size Measurements in the Lensed Quasar FBQ J0951+2635 by Rivera, Angelica B., Morgan, Christopher W., Florence, Steven M., Dahm, Scott E., Vrba, Frederick J., Tilleman, Trudy M., Cornachione, Matthew A., Falco, Emilio E.

“…Abstract We present 10 seasons of Sloan Digital Sky Survey r -band monitoring observations and five seasons of H -band observations of the two-image system FBQ…”
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X-Ray and Optical Microlensing in the Lensed Quasar PG 1115+080 by Morgan, Christopher W, Kochanek, Christopher. S, Dai, Xinyu, Morgan, Nicholas D, Falco, Emilio E

“…We analyzed the microlensing of the X-ray and optical emission of the lensed quasar PG 1115+080. We find that the effective radius of the X-ray emission is…”
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Quasar Microlensing Variability Studies Favor Shallow Accretion Disk Temperature Profiles by Cornachione, Matthew A., Morgan, Christopher W.

“…We compare the microlensing-based continuum emission region size measurements in a sample of 15 gravitationally lensed quasars with estimates of…”
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A characteristic optical variability time scale in astrophysical accretion disks by Burke, Colin J., Shen, Yue, Blaes, Omer, Gammie, Charles F., Horne, Keith, Jiang, Yan-Fei, Liu, Xin, McHardy, Ian M., Morgan, Christopher W., Scaringi, Simone, Yang, Qian

“…Variability time scales in active galaxies Active galactic nuclei contain a supermassive black hole (SMBH) surrounded by an accretion disk. As disk material…”
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The Quasar Accretion Disk Size-Black Hole Mass Relation by Morgan, Christopher W, Kochanek, C. S, Morgan, Nicholas D, Falco, Emilio E

“…We use the microlensing variability observed for 11 gravitationally lensed quasars to show that the accretion disk size at a rest-frame wavelength of 2500 A is…”
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Constraining Quasar Relativistic Reflection Regions and Spins with Microlensing by Dai, Xinyu, Steele, Shaun, Guerras, Eduardo, Morgan, Christopher W., Chen, Bin

“…We present an analysis of Chandra spectra of five gravitationally lensed active galactic nuclei. We confirm the previous detections of FeK emission lines in…”
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X-Ray Monitoring of Gravitationally Lensed Radio-loud Quasars with Chandra by Dogruel, Mustafa Burak, Dai, Xinyu, Guerras, Eduardo, Cornachione, Matthew, Morgan, Christopher W.

“…In this work, we calculated the sizes of unresolved X-ray emission regions in three gravitationally lensed radio-loud quasars, B 1422+231, MG J0414+0534, and Q…”
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A Microlensing Accretion Disk Size Measurement in the Lensed Quasar WFI 2026-4536 by Cornachione, Matthew A., Morgan, Christopher W., Millon, Martin, Bentz, Misty C., Courbin, Frederic, Bonvin, Vivien, Falco, Emilio E.

“…We use 13 seasons of R-band photometry from the 1.2 m Leonard Euler Swiss Telescope at La Silla to examine microlensing variability in the quadruply imaged…”
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Experimental Evidence for Water Mediated Electron Transfer Through Bis-Amino Acid Donor−Bridge−Acceptor Oligomers by Chakrabarti, Subhasis, Parker, Matthew F. L, Morgan, Christopher W, Schafmeister, Christian E, Waldeck, David H

“…This work compares the photoinduced unimolecular electron transfer rate constants for two different solute molecules (D-SSS-A and D-SRR-A) in water and DMSO…”
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Extended X-Ray Monitoring of Gravitational Lenses with Chandra and Joint Constraints on X-Ray Emission Regions by Guerras, Eduardo, Dai, Xinyu, Steele, Shaun, Liu, Ang, Kochanek, Christopher S., Chartas, George, Morgan, Christopher W., Chen, Bin

“…We present an X-ray photometric analysis of six gravitationally lensed quasars, with observation campaigns spanning from 5 to 14 years, measuring the total…”
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Near-infrared and Optical Continuum Emission Region Size Measurements in the Gravitationally lensed Quasars Q0957+561 and SBS0909+532 by Cornachione, Matthew A., Morgan, Christopher W., Burger, Hayden R., Shalyapin, Vyacheslav N., Goicoechea, Luis J., Vrba, Frederick J., Dahm, Scott E., Tilleman, Trudy M.

“…We present a microlensing analysis of updated light curves in three filters, the g-band, r-band, and H-band, for the gravitationally lensed quasars Q0957+561…”
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Discovery of a Very Bright, Nearby Gravitational Microlensing Event by Gaudi, B. Scott, Patterson, Joseph, Spiegel, David S, Krajci, Thomas, Koff, R, Pojmański, G, Dong, Subo, Gould, Andrew, Prieto, Jose L, Blake, Cullen H, Roming, Peter W. A, Bennett, David P, Bloom, Joshua S, Boyd, David, Eyler, Michael E, de Ponthière, Pierre, Mirabal, N, Morgan, Christopher W, Remillard, Ronald R, Vanmunster, T, Wagner, R. Mark, Watson, Linda C

“…We report the serendipitous detection of a very bright, very nearby microlensing event. In late 2006 October, an otherwise unremarkable A0 star at a distance…”
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FURTHER EVIDENCE THAT QUASAR X-RAY EMITTING REGIONS ARE COMPACT: X-RAY AND OPTICAL MICROLENSING IN THE LENSED QUASAR Q J0158-4325 by Morgan, Christopher W, Hainline, Laura J, Chen, Bin, Tewes, Malte, Kochanek, Christopher S, Dai, Xinyu, Kozlowski, Szymon, Blackburne, Jeffrey A, Mosquera, Ana M, Chartas, G, Courbin, F, Meylan, G

“…We present four new seasons of optical monitoring data and six epochs of X-ray photometry for the doubly imaged lensed quasar Q J0158-4325. The high-amplitude,…”
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X-RAY MONITORING OF GRAVITATIONAL LENSES WITH CHANDRA by BIN CHEN, XINYU DAI, KOCHANEK, Christopher S, CHARTAS, George, BLACKBURNE, Jeffrey A, MORGAN, Christopher W

“…We present Chandra monitoring data for six gravitationally lensed quasars: QJ 0158-4325, HE 0435-1223, SDSS 0924+0219, SDSS 1004+4112, HE 1104-1805, and Q…”
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TIME DELAY AND ACCRETION DISK SIZE MEASUREMENTS IN THE LENSED QUASAR SBS 0909+532 FROM MULTIWAVELENGTH MICROLENSING ANALYSIS by Hainline, Laura J, Morgan, Christopher W, MacLeod, Chelsea L, LANDAAL, ZACHARY D, Kochanek, C S, Harris, Hugh C, Tilleman, Trudy, Goicoechea, L J, SHALYAPIN, V N, Falco, Emilio E

“…We present three complete seasons and two half-seasons of Sloan Digital Sky Survey (SDSS) r-band photometry of the gravitationally lensed quasar SBS 0909+532…”
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A New Microlensing Event in the Doubly Imaged Quasar Q 0957+561 by Hainline, Laura J, Morgan, Christopher W, Beach, Joseph N, Kochanek, C. S, Harris, Hugh C, Tilleman, Trudy, Fadely, Ross, Falco, Emilio E, Le, Truong X

“…We present evidence for ultraviolet/optical microlensing in the gravitationally lensed quasar Q 0957+561. We combine new measurements from our optical…”
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Transit Target Selection Using Reduced Proper Motions by Gould, Andrew, Morgan, Christopher W

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Microlensing of the Lensed Quasar SDSS 0924+0219 by Morgan, Christopher W, Kochanek, C. S, Morgan, Nicholas D, Falco, Emilio E

“…We analyze V-, I-, and H-band HST images and two seasons of R-band monitoring data for the gravitationally lensed quasar SDSS 0924+0219. We clearly see that…”
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