J
J. Clavel
Researcher at University of St Andrews
Publications - 42
Citations - 2754
J. Clavel is an academic researcher from University of St Andrews. The author has contributed to research in topics: Galaxy & Active galactic nucleus. The author has an hindex of 25, co-authored 42 publications receiving 2579 citations.
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Journal ArticleDOI
Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I, an 8 month campaign of monitoring NGC 5548 with IUE
J. Clavel,G. A. Reichert,Danielle Alloin,D. M. Crenshaw,Gerard A. Kriss,Julian H. Krolik,M. A. Malkan,Hagai Netzer,Bradley M. Peterson,W. Wamsteker,Aldo Altamore,T. Baribaud,P. Barr,Sara C. Beck,Luc Binette,G. E. Bromage,Noah Brosch,Angeles I. Díaz,Alexei V. Filippenko,Klaus J. Fricke,C. M. Gaskell,Paolo Giommi,Ian S. Glass,P. M. Gondhalekar,R. L. Hackney,Jules P. Halpern,D. J. Hutter,S. Jörsäter,Anne L. Kinney,Wolfram Kollatschny,A. P. Koratkar,Kirk T. Korista,Ari Laor,Jean-Pierre Lasota,Elia M. Leibowitz,D. Maoz,Peter G. Martin,Tsevi Mazeh,E. J.A. Meurs,A. D. Nair,P. T. O'Brien,D. Pelat,Enrique Pérez,G. C. Perola,Roger Ptak,P. M. Rodríguez-Pascual,E. I. Rosenblatt,A. C. Sadun,M. Santos-Lleo,R. A. Shaw,Paul S. Smith,G. M. Stirpe,R. Stoner,Wei-Hsin Sun,M. H. Ulrich,E. van Groningen,Wei Zheng +56 more
TL;DR: In this paper, an 8-month campaign of monitoring NGC 5548 with IUE is described, with the goal of determining the size and structure of the broad-line region in active galactic nuclei.
Journal ArticleDOI
Steps toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. IX. Ultraviolet Observations of Fairall 9
P. M. Rodríguez-Pascual,Danielle Alloin,J. Clavel,D. M. Crenshaw,Keith Horne,Gerard A. Kriss,Julian H. Krolik,M. A. Malkan,Hagai Netzer,P. T. O'Brien,Bradley M. Peterson,Gail A. Reichert,Willem Wamsteker,Tal Alexander,P. Barr,Roger Blandford,Joel N. Bregman,T. E. Carone,S. D. Clements,Thierry J.-L. Courvoisier,M. M. De Robertis,M. Dietrich,Horacio Alberto Dottori,Rick Edelson,Alexei V. Filippenko,C. M. Gaskell,John P. Huchra,J. B. Hutchings,Wolfram Kollatschny,Anuradha Koratkar,Kirk T. Korista,Ari Laor,Gordon M. MacAlpine,Peter G. Martin,D. Maoz,B. McCollum,Simon L. Morris,G. C. Perola,Richard W. Pogge,Roger Ptak,M. C. Recondo‐Gonzalez,J. M. Rodriguez‐Espinoza,E. L. Rokaki,Maria Santos-Lleo,Kazuhiro Sekiguchi,J. M. Shull,M. A. J. Snijders,Linda S. Sparke,G. M. Stirpe,R. Stoner,Wei-Hsin Sun,Stefan Wagner,Ignaz Wanders,Belinda Jane Wilkes,Claudia Winge,W. Zheng +55 more
TL;DR: In this article, an 8-month monitoring campaign on the Seyfert 1 galaxy Fairall 9 has been conducted with the International Ultraviolet Explorer in an attempt to obtain reliable estimates of continuum-continuum and continuum-emission-line delays for a high-luminosity active galactic nucleus (AGN).
Journal ArticleDOI
Complex resonance absorption structure in the X-ray spectrum of IRAS 13349+2438
Masao Sako,S. M. Kahn,Ehud Behar,Jelle Kaastra,A. C. Brinkman,Th. Boller,E. M. Puchnarewicz,R. L. C. Starling,Duane A. Liedahl,J. Clavel,Maria Santos-Lleo +10 more
TL;DR: The spectrum obtained by the Reflection Grating Spectrometer (RGS) exhibits broad (FWHM - 1400 km/s) absorption lines from highly ionized elements including hydrogen- and helium-like carbon, nitrogen, oxygen, and neon, and several iron L - shell ions (Fe XVII - XX).
Journal ArticleDOI
Multiwavelength Observations of Short-Timescale Variability in NGC 4151. IV. Analysis of Multiwavelength Continuum Variability
Rick Edelson,Tal Alexander,D. M. Crenshaw,Shai Kaspi,M. A. Malkan,Bradley M. Peterson,R. S. Warwick,J. Clavel,Alexei V. Filippenko,Keith Horne,Kirk T. Korista,Gerard A. Kriss,Julian H. Krolik,D. Maoz,K. Nandra,P. T. O'Brien,Steve Penton,Tahir Yaqoob,P. Albrecht,Danielle Alloin,Thomas R. Ayres,Thomas J. Balonek,P. Barr,Aaron J. Barth,R. Bertram,G. E. Bromage,Michael T. Carini,T. E. Carone,FZ Cheng,K. K. Chuvaev,M. Dietrich,D DultzinHacyan,C. M. Gaskell,Ian S. Glass,Goad,S Hemar,LC Ho,John P. Huchra,J. B. Hutchings,W. N. Johnson,Demos Kazanas,Wolfram Kollatschny,A. Koratkar,O Kovo,Ari Laor,Gordon M. MacAlpine,P Magdziarz,Peter G. Martin,Thomas Matheson,B. McCollum,H. R. Miller,Simon L. Morris,V. L. Oknyanskij,Jeffrey Penfold,Enrique Pérez,G. C. Perola,G. Pike,R. W. Pogge,Roger Ptak,BC Qian,M. C. Recondo-Gonzalez,Gail A. Reichert,J. M. Rodriguez-Espinoza,P. M. Rodríguez-Pascual,E. L. Rokaki,J. Roland,A. C. Sadun,I. Salamanca,Maria Santos-Lleo,J. C. Shields,J. M. Shull,DA Smith,S. M. Smith,Maj Snijders,G. M. Stirpe,R. Stoner,Wei-Hsin Sun,M. H. Ulrich,E vanGroningen,Robert Wagner,Stephan Wagner,Ignaz Wanders,W. F. Welsh,Ray J. Weymann,Belinda Jane Wilkes,H Wu,J Wurster,SJ Xue,A. A. Zdziarski,W. Zheng,ZL Zou +90 more
TL;DR: In this article, the authors combine data from the three preceding papers in order to analyze the multi wave-band variability and spectral energy distribution of the Seyfert 1 galaxy NGC 4151 during the 1993 December monitoring campaign.
Journal ArticleDOI
Complex resonance absorption structure in the X-ray spectrum of IRAS13349+2438
M. Sako,S. M. Kahn,Etienne Behar,Jelle Kaastra,A. C. Brinkman,Th. Boller,E. M. Puchnarewicz,R. L. C. Starling,D. A. Liedahl,J. Clavel,Maria Santos-Lleo +10 more
TL;DR: The spectrum obtained by the Reflection Grating Spectrometer (RGS) of the luminous infrared-loud quasar IRAS 13349+2438 was observed with the XMM-Newton Observatory as part of the Performance Verification program as mentioned in this paper.