Related papers: Space Telescope and Optical Reverberation Mapping …

A High-Quality velocity-delay map of the broad-line region in NGC 5548

NGC 5548 has been well spectroscopically monitored for reverberation mapping of the central kinematics by 19 campaigns. Using the maximum entropy method in this Letter, we build up a high-quality velocity-delay map of the H$\beta$ emission…

Astrophysics of Galaxies · Physics 2018-09-26 Ming Xiao , Pu Du , Kai-Xing Lu , Chen Hu , Yan-Rong Li , Zhi-Xiang Zhang , Kai Wang , Ying-Ke Huang , Jin Ming Bai , Weihao Bian , Luis C. Ho , Ye-Fei Yuan , Jian-Min Wang

Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum

We model the ultraviolet spectra of the Seyfert 1 galaxy NGC~5548 obtained with the Hubble Space Telescope during the 6-month reverberation-mapping campaign in 2014. Our model of the emission from NGC 5548 corrects for overlying absorption…

Astrophysics of Galaxies · Physics 2019-09-04 G. A. Kriss , G. De Rosa , J. Ely , B. M. Peterson , J. Kaastra , M. Mehdipour , G. J. Ferland , M. Dehghanian , S. Mathur , R. Edelson , K. T. Korista , N. Arav , A. J. Barth , M. C. Bentz , W. N. Brandt , D. M. Crenshaw , E. Dalla Bontà , K. D. Denney , C. Done , M. Eracleous , M. M. Fausnaugh , E. Gardner , M. R. Goad , C. J. Grier , Keith Horne , C. S. Kochanek , I. M. Mchardy , H. Netzer , A. Pancoast , L. Pei , R. W. Pogge , D. Proga , C. Silva , N. Tejos , M. Vestergaard , S. M. Adams , M. D. Anderson , P. Arévalo , T G. Beatty , E. Behar , V. N. Bennert , S. Bianchi , A. Bigley , S. Bisogni , R. Boissay-Malaquin , G. A. Borman , M. C. Bottorff , A. A. Breeveld , M. Brotherton , J. E. Brown , J. S. Brown , E. M. Cackett , G. Canalizo , M. Cappi , M. T. Carini , K. I. Clubb , J. M. Comerford , C. T. Coker , E. M. Corsini , E. Costantini , S. Croft , K. V. Croxall , A. J. Deason , A. De Lorenzo-Cáceres , B. De Marco , M. Dietrich , L. Di Gesu , J. Ebrero , P. A. Evans , A. V. Filippenko , K. Flatland , E. L. Gates , N. Gehrels , Z S. Geier , J. M. Gelbord , L. Gonzalez , V. Gorjian , D. Grupe , A. Gupta , P. B. Hall , C. B. Henderson , S. Hicks , E. Holmbeck , T. W. -S. Holoien , T. A. Hutchison , M. Im , J. J. Jensen , C. A. Johnson , M. D. Joner , S. Kaspi , B. C. Kelly , P. L. Kelly , J. A. Kennea , M. Kim , S. C. Kim , S. Y. Kim , A. King , S. A. Klimanov , Y. Krongold , M. W. Lau , J. C. Lee , D. C. Leonard , Miao Li , P. Lira , C. Lochhaas , Zhiyuan Ma , F. Macinnis , M. A. Malkan , E. R. Manne-Nicholas , G. Matt , J. C. Mauerhan , R. Mcgurk , C. Montuori , L. Morelli , A. Mosquera , D. Mudd , F. Müller-Sánchez , S. V. Nazarov , R. P. Norris , J. A. Nousek , M. L. Nguyen , P. Ochner , D. N. Okhmat , S. Paltani , J. R. Parks , C. Pinto , A. Pizzella , R. Poleski , G. Ponti , J. -U. Pott , S. E. Rafter , H. -W. Rix , J. Runnoe , D. A. Saylor , J. S. Schimoia , K. Schnülle , B. Scott , S. G. Sergeev , B. J. Shappee , I. Shivvers , M. Siegel , G. V. Simonian , A. Siviero , A. Skielboe , G. Somers , M. Spencer , D. Starkey , D. J. Stevens , H. -I. Sung , J. Tayar , K. G. Teems , T. Treu , C. S. Turner , P. Uttley , J . Van Saders , L. Vican , C. Villforth , S. Villanueva , D. J. Walton , T. Waters , Y. Weiss , J. -H. Woo , H. Yan , H. Yuk , W. Zheng , W. Zhu , Y. Zu

Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-Line Analysis for NGC 5548

We present the results of an optical spectroscopic monitoring program targeting NGC 5548 as part of a larger multi-wavelength reverberation mapping campaign. The campaign spanned six months and achieved an almost daily cadence with…

Astrophysics of Galaxies · Physics 2017-03-22 L. Pei , M. M. Fausnaugh , A. J. Barth , B. M. Peterson , M. C. Bentz , G. De Rosa , K. D. Denney , M. R. Goad , C. S. Kochanek , K. T. Korista , G. A. Kriss , R. W. Pogge , V. N. Bennert , M. Brotherton , K. I. Clubb , E. Dalla Bontà , A. V. Filippenko , J. E. Greene , C. J. Grier , M. Vestergaard , W. Zheng , Scott M. Adams , Thomas G. Beatty , A. Bigley , Jacob E. Brown , Jonathan S. Brown , G. Canalizo , J. M. Comerford , Carl T. Coker , E. M. Corsini , S. Croft , K. V. Croxall , A. J. Deason , Michael Eracleous , O. D. Fox , E. L. Gates , C. B. Henderson , E. Holmbeck , T. W. -S. Holoien , J. J. Jensen , C. A. Johnson , P. L. Kelly , S. Kim , A. King , M. W. Lau , Miao Li , Cassandra Lochhaas , Zhiyuan Ma , E. R. Manne-Nicholas , J. C. Mauerhan , M. A. Malkan , R. McGurk , L. Morelli , Ana Mosquera , Dale Mudd , F. Muller Sanchez , M. L. Nguyen , P. Ochner , B. Ou-Yang , A. Pancoast , Matthew T. Penny , A. Pizzella , Radosław Poleski , Jessie Runnoe , B. Scott , Jaderson S. Schimoia , B. J. Shappee , I. Shivvers , Gregory V. Simonian , A. Siviero , Garrett Somers , Daniel J. Stevens , M. A. Strauss , Jamie Tayar , N. Tejos , T. Treu , J. Van Saders , L. Vican , S. Villanueva , H. Yuk , N. L. Zakamska , W. Zhu , M. D. Anderson , P. Arévalo , C. Bazhaw , S. Bisogni , G. A. Borman , M. C. Bottorff , W. N. Brandt , A. A. Breeveld , E. M. Cackett , M. T. Carini , D. M. Crenshaw , A. De Lorenzo-Cáceres , M. Dietrich , R. Edelson , N. V. Efimova , J. Ely , P. A. Evans , G. J. Ferland , K. Flatland , N. Gehrels , S. Geier , J. M. Gelbord , D. Grupe , A. Gupta , P. B. Hall , S. Hicks , D. Horenstein , Keith Horne , T. Hutchison , M. Im , M. D. Joner , J. Jones , J. Kaastra , S. Kaspi , B. C. Kelly , J. A. Kennea , M. Kim , S. C. Kim , S. A. Klimanov , J. C. Lee , D. C. Leonard , P. Lira , F. MacInnis , S. Mathur , I. M. McHardy , C. Montouri , R. Musso , S. V. Nazarov , H. Netzer , R. P. Norris , J. A. Nousek , D. N. Okhmat , I. Papadakis , J. R. Parks , J. -U. Pott , S. E. Rafter , H. -W. Rix , D. A. Saylor , K. Schnülle , S. G. Sergeev , M. Siegel , A. Skielboe , M. Spencer , D. Starkey , H. -I. Sung , K. G. Teems , C. S. Turner , P. Uttley , C. Villforth , Y. Weiss , J. -H. Woo , H. Yan , S. Young , Y. Zu

Supermassive Black Hole and Broad-line Region in NGC 5548: 2023 Reverberation Mapping Results

We present the results of the 2023 spectroscopic reverberation mapping (RM) campaign for active galactic nuclei (AGN) of NGC 5548, continuing our long-term monitoring program. Using the Lijiang 2.4-meter telescope, we obtained 74 spectra…

Astrophysics of Galaxies · Physics 2025-11-11 Wen-Zhe Xi , Kai-Xing Lu , Jin-Ming Bai , Zhang Yue , Weimin Yi , Liang Xu , Sha-Sha Li , Hai-Cheng Feng , Jian-Guo Wang

Reverberation Mapping of the Broad-line Region in NGC 5548: Evidence for Radiation Pressure?

NGC 5548 is the best-observed reverberation-mapped active galactic nucleus with long-term, intensive monitoring. Here we report results from a new observational campaign between January and July, 2015. We measure the centroid time lag of…

Astrophysics of Galaxies · Physics 2016-08-24 Kai-Xing Lu , Pu Du , Chen Hu , Yan-Rong Li , Zhi-Xiang Zhang , Kai Wang , Ying-Ke Huang , Shao-Lan Bi , Jin-Ming Bai , Luis C. Ho , Jian-Min Wang

Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548

We present geometric and dynamical modeling of the broad line region for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The dataset includes photometric and spectroscopic monitoring in the optical and…

Astrophysics of Galaxies · Physics 2020-10-21 P. R. Williams , A. Pancoast , T. Treu , B. J. Brewer , B. M. Peterson , A. J. Barth , M. A. Malkan , G. De Rosa , Keith Horne , G. A. Kriss , N. Arav , M. C. Bentz , E. M. Cackett , E. Dalla Bontà , M. Dehghanian , C. Done , G. J. Ferland , C. J. Grier , J. Kaastra , E. Kara , C. S. Kochanek , S. Mathur , M. Mehdipour , R. W. Pogge , D. Proga , M. Vestergaard , T. Waters , S. M. Adams , M. D. Anderson , P. Arévalo , T. G. Beatty , V. N. Bennert , A. Bigley , S. Bisogni , G. A. Borman , T. A. Boroson , M. C. Bottorff , W. N. Brandt , A. A. Breeveld , M. Brotherton , J. E. Brown , J. S. Brown , G. Canalizo , M. T. Carini , K. I. Clubb , J. M. Comerford , E. M. Corsini , D. M. Crenshaw , S. Croft , K. V. Croxall , A. J. Deason , A. De Lorenzo-Cáceres , K. D. Denney , M. Dietrich , R. Edelson , N. V. Efimova , J. Ely , P. A. Evans , M. M. Fausnaugh , A. V. Filippenko , K. Flatland , O. D. Fox , E. Gardner , E. L. Gates , N. Gehrels , S. Geier , J. M. Gelbord , L. Gonzalez , V. Gorjian , J. E. Greene , D. Grupe , A. Gupta , P. B. Hall , C. B. Henderson , S. Hicks , E. Holmbeck , T. W. -S. Holoien , T. Hutchison , M. Im , J. J. Jensen , C. A. Johnson , M. D. Joner , J. Jones , S. Kaspi , P. L. Kelly , J. A. Kennea , M. Kim , S. Kim , S. C. Kim , A. King , S. A. Klimanov , C. Knigge , Y. Krongold , M. W. Lau , J. C. Lee , D. C. Leonard , Miao Li , P. Lira , C. Lochhaas , Zhiyuan Ma , E. R. Manne-Nicholas , F. MacInnis , J. C. Mauerhan , R. McGurk , I. M. Mc Hardy , C. Montuori , L. Morelli , A. Mosquera , D. Mudd , F. Müller-Sánchez , S. V. Nazarov , R. P. Norris , J. A. Nousek , M. L. Nguyen , P. Ochner , D. N. Okhmat , I. Papadakis , J. R. Parks , L. Pei , M. T. Penny , A. Pizzella , R. Poleski , J. -U. Pott , S. E. Rafter , H. -W. Rix , J. Runnoe , D. A. Saylor , J. S. Schimoia , B. Scott , S. G. Sergeev , B. J. Shappee , I. Shivvers , M. Siegel , G. V. Simonian , A. Siviero , A. Skielboe , G. Somers , M. Spencer , D. Starkey , D. J. Stevens , H. -I. Sung , J. Tayar , N. Tejos , C. S. Turner , P. Uttley , J. Van Saders , S. A. Vaughan , L. Vican , S. Villanueva , C. Villforth , Y. Weiss , J. -H. Woo , H. Yan , S. Young , H. Yuk , W. Zheng , W. Zhu , Y. Zu

Steps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XVI. A Thirteen-Year Study of Spectral Variability in NGC 5548

We present the final installment of an intensive 13-year study of variations of the optical continuum and broad H-beta emission line in the Seyfert 1 galaxy NGC 5548. The data base consists of 1530 optical continuum measurements and 1248…

Astrophysics · Physics 2009-11-07 B. M. Peterson , the International AGN Watch

Accretion disk wind as explanation for the broad-line region structure in NGC 5548

Supermassive black holes in the centers of active galactic nuclei (AGN) are surrounded by broad-line regions (BLRs). The broad emission lines seen in the AGN spectra are emitted in this spatially unresolved region. We intend to obtain…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 W. Kollatschny , M. Zetzl

Space Telescope and Optical Reverberation Mapping Project. I. Ultraviolet Observations of the Seyfert 1 Galaxy NGC 5548 with the Cosmic Origins Spectrograph on Hubble Space Telescope

We describe the first results from a six-month long reverberation-mapping experiment in the ultraviolet based on 170 observations of the Seyfert 1 galaxy NGC 5548 with the Cosmic Origins Spectrograph on the Hubble Space Telescope.…

Astrophysics of Galaxies · Physics 2015-07-10 G. De Rosa , B. M. Peterson , J. Ely , G. A. Kriss , D. M. Crenshaw , Keith Horne , K. T. Korista , H. Netzer , R. W. Pogge , P. Arevalo , A. J. Barth , M. C. Bentz , W. N. Brandt , A. A. Breeveld , B. J. Brewer , E. Dalla Bonta , A. De Lorenzo-Caceres , K. D. Denney , M. Dietrich , R. Edelson , P. A. Evans , M. M. Fausnaugh , N. Gehrels , J. M. Gelbord , M. R. Goad , C. J. Grier , D. Grupe , P. B. Hall , J. Kaastra , B. C. Kelly , J. A. Kennea , C. S. Kochanek , P. Lira , S. Mathur , I. M. McHardy , J. A. Nousek , A. Pancoast , I. Papadakis , L. Pei , J. S. Schimoia , M. Siegel , D. Starkey , T. Treu , P. Uttley , S. Vaughan , M. Vestergaard , C. Villforth , H. Yan , S. Young , Y. Zu

Space Telescope and Optical Reverberation Mapping Project. III. Optical Continuum Emission and Broad-Band Time Delays in NGC 5548

We present ground-based optical photometric monitoring data for NGC 5548, part of an extended multi-wavelength reverberation mapping campaign. The light curves have nearly daily cadence from 2014 January to July in nine filters (\emph{BVRI}…

Astrophysics of Galaxies · Physics 2016-04-27 M. M. Fausnaugh , K. D. Denney , A. J. Barth , M. C. Bentz , M. C. Bottorff , M. T. Carini , K. V. Croxall , G. De Rosa , M. R. Goad , Keith Horne , M. D. Joner , S. Kaspi , M. Kim , S. A. Klimanov , C. S. Kochanek , D. C. Leonard , H. Netzer , B. M. Peterson , K. Schnulle , S. G. Sergeev , M. Vestergaard , W. -K. Zheng , Y. Zu , M. D. Anderson , P. Arevalo , C. Bazhaw , G. A. Borman , T. A. Boroson , W. N. Brandt , A. A. Breeveld , B. J. Brewer , E. M. Cackett , D. M. Crenshaw , E. Dalla Bonta , A. De Lorenzo-Caceres , M. Dietrich , R. Edelson , N. V. Efimova , J. Ely , P. A. Evans , A. V. Filippenko , K. Flatland , N. Gehrels , S. Geier , J. M. Gelbord , L. Gonzalez , V. Gorjian , C. J. Grier , D. Grupe , P. B. Hall , S. Hicks , D. Horenstein , T. Hutchison , M. Im , J. J. Jensen , J. Jones , J. Kaastra , B. C. Kelly , J. A. Kennea , S. C. Kim , K. T. Korista , G. A. Kriss , J. C. Lee , P. Lira , F. MacInnis , E. R. Manne-Nicholas , S. Mathur , I. M. McHardy , C. Montouri , R. Musso , S. V. Nazarov , R. P. Norris , J. A. Nousek , D. N. Okhmat , A. Pancoast , I. Papadakis , J. R. Parks , L. Pei , R. W. Pogge , J. -U. Pott , S. E. Rafter , H. -W. Rix , D. A. Saylor , J. S. Schimoia , M. Siegel , M. Spencer , D. Starkey , H. -I. Sung , K. G. Teems , T. Treu , C. S. Turner , P. Uttley , C. Villforth , Y. Weiss , J. -H. Woo , H. Yan , S. Young

Supermassive Black Hole and Broad-line Region in NGC~5548: Results from Five-season Reverberation Mapping

NGC 5548 is one of the active galactic nuclei (AGN) selected for our long-term spectroscopic monitoring with the Lijiang 2.4~m telescope, aiming at investigating the origin and evolution of the broad-line regions (BLRs), accurately…

Astrophysics of Galaxies · Physics 2022-11-16 Kai-Xing Lu , Jin-Ming Bai , Jian-Min Wang , Chen Hu , Yan-Rong Li , Pu Du , Ming Xiao , Hai-Cheng Feng , Sha-Sha Li , Jian-Guo Wang , Zhi-Xiang Zhang , Ying-Ke Huang

Kinematics of the Broad Emission Line Region in NGC 5548

We derive both total flux and velocity-resolved response functions for the CIV 1549 emission line from the data obtained in the 1993 NGC 5548 monitoring campaign. These response functions imply: 1.) the emission region stretches from inside…

Astrophysics · Physics 2009-10-28 Christine Done , Julian Krolik

Space Telescope and Optical Reverberation Mapping Project. IV. Anomalous behavior of the broad ultraviolet emission lines in NGC 5548

During an intensive Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) UV monitoring campaign of the Seyfert~1 galaxy NGC 5548 performed from 2014 February to July, the normally highly correlated far-UV continuum and broad…

Astrophysics of Galaxies · Physics 2016-06-15 M. R. Goad , K. T. Korista , G. De Rosa , G. A. Kriss , R. Edelson , A. J. Barth , G. J. Ferland , C. S. Kochanek , H. Netzer , B. M. Peterson , M. C. Bentz , S. Bisogni , D. M. Crenshaw , K. D. Denney , J. Ely , M. M. Fausnaugh , C. J. Grier , A. Gupta , K. D. Horne , J. Kaastra , A. Pancoast , L. Pei , R. W. Pogge , A. Skielboe , D. Starkey , M. Vestergaard , Y. Zu , M. D. Anderson , P. Arevalo , C. Bazhaw , G. A. Borman , T. A. Boroson , M. C. Bottorff , W. N. Brandt , A. A. Breeveld , B. J. Brewer , E. M. Cackett , M. T. Carini , K. V. Croxall , E. Dalla Bonta , A. de Lorenzo-Caceres , M. Dietrich , N. V. Efimova , P. A. Evans , A. V. Filippenko , K. Flatland , N. Gehrels , S. Geier , G. M. Gelbord , L. Gonzalez , V. Gorjian , D. Grupe , P. B. Hall , S. Hicks , D. Horenstein , T. Hutchison , M. Im , J. J. Jensen , M. D. Joner , J. Jones , S. Kaspi , B. C. Kelly , J. A. Kennea , M. Kim , S. C. Kim , S. A. Klimanov , V. M. Larionov , J. C. Lee , D. C. Leonard , P. Lira , F. MacInnis , E. R. Manne-Nicholas , S. Mathur , I. M. McHardy , C. Montouri , R. Musso , S. V. Nazarov , R. P. Norris , J. A. Nousek , D. N. Okhmat , I. Papadakis , J. R. Parks , J. -U. Pott , S. E. Rafter , H. -W. Rix , D. A. Saylor , J. S. Schimoia , K. Schnulle , S. G. Sergeev , M. Siegel , M. Spencer , H. -I. Sung , K. G. Teems , T. Treu , C. S. Turner , P. Uttley , C. Villforth , Y. Weiss , J. -H. Woo , H. Yan , S. Young , W. -K. Zheng

NGC 5548 in a Low-Luminosity State: Implications for the Broad-Line Region

We describe results from a new ground-based monitoring campaign on NGC 5548, the best studied reverberation-mapped AGN. We find that it was in the lowest luminosity state yet recorded during a monitoring program, namely L(5100) = 4.7 x…

Astrophysics · Physics 2011-02-11 Misty C. Bentz , Kelly D. Denney , Edward M. Cackett , Matthias Dietrich , Jeffrey K. J. Fogel , Himel Ghosh , Keith D. Horne , Charles Kuehn , Takeo Minezaki , Christopher A. Onken , Bradley M. Peterson , Richard W. Pogge , Vladimir I. Pronik , Douglas O. Richstone , Sergey G. Sergeev , Marianne Vestergaard , Matthew G. Walker , Yuzuru Yoshii

Keplerian Motion of Broad-Line Region Gas as Evidence for Supermassive Black Holes in Active Galactic Nuclei

Emission-line variability data on NGC 5548 argue strongly for the existence of a mass of order 7 x 10^7 solar masses within the inner few light days of the nucleus in the Seyfert 1 galaxy NGC 5548. The time-delayed response of the emission…

Astrophysics · Physics 2009-08-21 Bradley M. Peterson , Amri Wandel

A Detailed View of the Broad Line Region in NGC 3783 from Velocity-Resolved Reverberation Mapping

We have modeled the full velocity-resolved reverberation response of the H$\beta$ and He II optical broad emission lines in NGC 3783 to constrain the geometry and kinematics of the low-ionization and high-ionization broad line region. The…

Astrophysics of Galaxies · Physics 2021-10-27 Misty C. Bentz , Peter R. Williams , Rachel Street , Christopher A. Onken , Monica Valluri , Tommaso Treu

Photoionized HBeta Emission in NGC 5548: It Breathes!

Emission-line regions in active galactic nuclei and other photoionized nebulae should become larger in size when the ionizing luminosity increases. This 'breathing' effect is observed for the Hbeta emission in NGC 5548 by using Hbeta and…

Astrophysics · Physics 2009-11-13 Edward M. Cackett , Keith Horne

Steps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XV. Long-Term Optical Monitoring of NGC 5548

We present the results of three years of ground-based observations of the Seyfert 1 galaxy NGC 5548, which combined with previously reported data, yield optical continuum and broad-line H-beta light curves for a total of eight years. The…

Astrophysics · Physics 2009-10-30 B. M. Peterson , A. J. Barth , P. Berlind , R. Bertram , K. Bischoff , N. G. Bochkarev , A. N. Burenkov , F. -Z. Cheng , M. Dietrich , A. V. Filippenko , E. Giannuzzo , L. C. Ho , J. P. Huchra , J. Hunley , S. Kaspi , W. Kollatschny , D. C. Leonard , Yu. F. Malkov , T. Matheson , M. Mignoli , B. Nelson , P. Papaderos , J. Peters , R. W. Pogge , V. I. Pronik , S. G. Sergeev , E. A. Sergeeva , A. I. Shapovalova , G. M. Stirpe , S. Tokarz , R. M. Wagner , I. Wanders , J. -Y. Wei , B. J. Wilkes , H. Wu , S. -J. Xue , Z. -L. Zou

The Structure of the Broad Line Region in AGN: I. Reconstructed Velocity-Delay Maps

We present velocity-resolved reverberation results for five active galactic nuclei. We recovered velocity-delay maps using the maximum-entropy method for four objects: Mrk 335, Mrk 1501, 3C120, and PG2130+099. For the fifth, Mrk 6, we were…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 C. J. Grier , B. M. Peterson , Keith Horne , M. C. Bentz , R. W. Pogge , K. D. Denney , G. De Rosa , Paul Martini , C. S. Kochanek , Y. Zu , B. Shappee , R. Siverd , T. G. Beatty , S. G. Sergeev , S. Kaspi , C. Araya Salvo , J. C. Bird , D. J. Bord , G. A. Borman , X. Che , C. Chen , S. A. Cohen , M. Dietrich , V. T. Doroshenko , Yu. S. Efimov , N. Free , I. Ginsburg , C. B. Henderson , A. L. King , K. Mogren , M. Molina , A. M. Mosquera , S. V. Nazarov , D. N. Okhmat , O. Pejcha , S. Rafter , J. C. Shields , J. Skowron , D. M. Szczygiel , M. Valluri , J. L. van Saders

A Reverberation Lag for the High-Ionization Component of the Broad Line Region in the Narrow-Line Seyfert 1 Mrk 335

We present the first results from a detailed analysis of photometric and spectrophotometric data on the narrow-line Seyfert 1 galaxy Mrk 335, collected over a 120-day span in the fall of 2010. From these data we measure the lag in the He II…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 C. J. Grier , B. M. Peterson , R. W. Pogge , K. D. Denney , M. C. Bentz , Paul Martini , S. G. Sergeev , S. Kaspi , Y. Zu , C. S. Kochanek , B. J. Shappee , K. Z. Stanek , C. Araya Salvo , T. G. Beatty , J. C. Bird , D. J. Bord , G. A. Borman , X. Che , C. Chen , S. A. Cohen , M. Dietrich , V. T. Doroshenko , Yu. S. Efimov , N. Free , I. Ginsburg , C. B. Henderson , Keith Horne , A. L. King , K. Mogren , M. Molina , A. M. Mosquera , S. V. Nazarov , D. N. Okhmat , O. Pejcha , S. Rafter , J. C. Shields , J. Skowron , D. M. Szczygiel , M. Valluri , J. L. van Saders