Search Results - "Wilhite, Brian C."

On the variability of quasars: a link between the Eddington ratio and optical variability? by Wilhite, Brian C., Brunner, Robert J., Grier, Catherine J., Schneider, Donald P., Vanden Berk, Daniel E.

“…Repeat scans by the Sloan Digital Sky Survey (SDSS) of a 278-deg2 stripe along the celestial equator have yielded an average of over 10 observations each for…”
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The Ensemble Photometric Variability of ~25,000 Quasars in the Sloan Digital Sky Survey by Vanden Berk, Daniel E, Wilhite, Brian C, Kron, Richard G, Anderson, Scott F, Brunner, Robert J, Hall, Patrick B, Ivezić, Željko, Richards, Gordon T, Schneider, Donald P, York, Donald G, Brinkmann, Jonathan V, Lamb, Don Q, Nichol, Robert C, Schlegel, David J

“…Using a sample of over 25,000 spectroscopically confirmed quasars from the Sloan Digital Sky Survey, we show how quasar variability in the rest-frame…”
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Broad Absorption Line Variability in Repeat Quasar Observations from the Sloan Digital Sky Survey by Lundgren, Britt F, Wilhite, Brian C, Brunner, Robert J, Hall, Patrick B, Schneider, Donald P, York, Donald G, Vanden Berk, Daniel E, Brinkmann, Jonathan

“…We present a time-variability analysis of 29 broad absorption line quasars (BALQSOs) observed in two epochs by the Sloan Digital Sky Survey. These spectra are…”
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Spectral Variability of Quasars in the Sloan Digital Sky Survey. I. Wavelength Dependence by Wilhite, Brian C, Vanden Berk, Daniel E, Kron, Richard G, Schneider, Donald P, Pereyra, Nicholas, Brunner, Robert J, Richards, Gordon T, Brinkmann, Jonathan V

“…SDSS repeat spectroscopic observations have resulted in multiepoch spectroscopy for 62500 quasars observed more than 50 days apart. From this sample,…”
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Characteristic QSO Accretion Disk Temperatures from Spectroscopic Continuum Variability by Pereyra, Nicolas A, Vanden Berk, Daniel E, Turnshek, David A, Hillier, D. John, Wilhite, Brian C, Kron, Richard G, Schneider, Donald P, Brinkmann, Jonathan

“…Using Sloan Digital Sky Survey (SDSS) QSO spectra taken at multiple epochs, we find that the composite flux differences in the rest-frame wavelength range…”
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Spectral Variability of Quasars in the Sloan Digital Sky Survey. II. The C IV Line by Wilhite, Brian C, Vanden Berk, Daniel E, Brunner, Robert J, Brinkmann, Jonathan V

“…We examine the variability of the high-ionization C IV l1549 line in a sample of 105 quasars observed at multiple epochs by the Sloan Digital Sky Survey. We…”
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The Effect of Variability on the Estimation of Quasar Black Hole Masses by Wilhite, Brian C, Brunner, Robert J, Schneider, Donald P, Vanden Berk, Daniel E

“…We investigate the time-dependent variations of ultraviolet (UV) black hole mass estimates of quasars in the Sloan Digital Sky Survey (SDSS). From SDSS spectra…”
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SDSS J124602.54 + 011318.8: A Highly Luminous Optical Transient at z = 0.385 by Vanden Berk, Daniel E, Lee, Brian C, Wilhite, Brian C, Beacom, John F, Lamb, Donald Q, Annis, James, Abazajian, Kevork, McKay, Timothy A, Kron, Richard G, Kent, Stephen, Hurley, Kevin, Kehoe, Robert, Wren, Jim, Henden, Arne A, York, Donald G, Schneider, Donald P, Adelman, Jennifer, Brinkmann, Jon, Brunner, Robert J, Csabai, István, Harvanek, Michael, Hennessy, Greg S, Ivezić, Željko, Kleinman, Atsuko N, Kleinman, Scot J, Krzesinski, Jurek, Long, Daniel C, Neilsen, Eric H, Newman, Peter R, Snedden, Stephanie A, Stoughton, Chris, Tucker, Douglas L, Yanny, Brian

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Cluster winds blow along supercluster axes by Novikov, Dmitri I., Melott, Adrian L., Wilhite, Brian C., Kaufman, Michael, Burns, Jack O., Miller, Christopher J., Batuski, David J.

“…Within Abell galaxy clusters containing wide-angle tailed (WAT) radio sources, there is evidence of a ‘prevailing wind’ which directs the WAT jets. We study…”
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On the variability of quasars: a link between the Eddington ratio and optical variability? by Wilhite, Brian C., Brunner, Robert J., Grier, Catherine J., Schneider, Donald P., Vanden Berk, Daniel E.

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Spectral variability of quasars in the Sloan Digital Sky Survey by Wilhite, Brian C

“…Sloan Digital Sky Survey (SDSS) repeat spectroscopic observations have resulted in multiple-epoch spectroscopy for ∼2500 quasars observed more than 50 days…”
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Spectral variability of quasars in the Sloan Digital Sky Survey by Wilhite, Brian C

“…Sloan Digital Sky Survey (SDSS) repeat spectroscopic observations have resulted in multiple-epoch spectroscopy for ∼2500 quasars observed more than 50 days…”
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Cluster winds blow along supercluster axes by Novikov, Dmitri I., Melott, Adrian L., Wilhite, Brian C., Kaufman, Michael, Burns, Jack O., Miller, Christopher J., Batuski, David J.

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A Synoptic, Multiwavelength Analysis of a Large Quasar Sample by Rengstorf, Adam W, Brunner, Robert J, Wilhite, Brian C

“…Astron.J.131:1923-1933,2006 We present variability and multi-wavelength photometric information for the 933 known quasars in the QUEST Variability Survey…”
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Broad Absorption Line Variability in Repeat Quasar Observations from the Sloan Digital Sky Survey by Lundgren, Britt F, Wilhite, Brian C, Brunner, Robert J, Hall, Patrick B, Schneider, Donald P, York, Donald G, Berk, Daniel E. Vanden, Brinkmann, Jonathan

“…Astrophys.J.656:73-83,2007 We present a time-variability analysis of 29 broad absorption line quasars (BALQSOs) observed in two epochs by the Sloan Digital Sky…”
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Characteristic QSO Accretion Disk Temperatures from Spectroscopic Continuum Variability by Pereyra, Nicolas A, Berk, Daniel E. Vanden, Turnshek, David A, Hillier, D. John, Wilhite, Brian C, Kron, Richard G, Schneider, Donald P, Brinkmann, Jonathan

“…Astrophys.J. 642 (2006) 87-95 Using Sloan Digital Sky Survey (SDSS) quasar spectra taken at multiple epochs, we find that the composite flux density…”
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Spectral Variability of Quasars in the Sloan Digital Sky Survey. I: Wavelength Dependence by Wilhite, Brian C, Berk, Daniel E. Vanden, Kron, Richard G, Schneider, Donald P, Pereyra, Nicholas, Brunner, Robert J, Richards, Gordon T, Brinkmann, Jonathan V

“…Astrophys.J. 633 (2005) 638-648 Sloan Digital Sky Survey (SDSS) repeat spectroscopic observations have resulted in multiple-epoch spectroscopy for roughly 2500…”
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