J
J. Roland
Researcher at Goddard Space Flight Center
Publications - 2
Citations - 254
J. Roland is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Light curve & Extreme ultraviolet. The author has an hindex of 2, co-authored 2 publications receiving 245 citations.
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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
Multiwavelength Observations of Short-Timescale Variability in NGC 4151. I. Ultraviolet Observations
D. M. Crenshaw,P. M. Rodríguez-Pascual,Steve Penton,Rick Edelson,Danielle Alloin,T. R. Ayres,J. Clavel,K. Horne,W. N. Johnson,S. Kaspi,K. T. Korista,G. A. Kriss,J. H. Krolik,M. A. Malkan,D. Maoz,H. Netzer,P. T. O'Brien,Bradley M. Peterson,G. A. Reichert,J. M. Shull,M. H. Ulrich,W. Wamsteker,R. S. Warwick,T. Yaqoob,Thomas J. Balonek,P. Barr,G. E. Bromage,M. Carini,T. E. Carone,FZ Cheng,K. K. Chuvaev,M. Dietrich,V. T. Doroshenko,D DultzinHacyan,A. V. Filippenko,C. M. Gaskell,I. S. Glass,M. R. Goad,J. Hutchings,Demos Kazanas,Wolfram Kollatschny,A. P. Koratkar,A. Laor,Karen M. Leighly,V. M. Lyutyi,G. M. MacAlpine,Yu. F. Malkov,Peter G. Martin,B. McCollum,N. I. Merkulova,L. P. Metik,Vladimir Metlov,H. R. Miller,Simon L. Morris,V. L. Oknyanskij,J. Penfold,Enrique Pérez,G. C. Perola,G. Pike,R. W. Pogge,I. Pronik,V. I. Pronik,R. L. Ptak,M. C. Recondo-Gonzalez,J. M. Rodriguez-Espinoza,E. L. Rokaki,J. Roland,A. C. Sadun,I. Salamanca,M. Santos-Lleo,S. G. Sergeev,S. M. Smith,M. A. J. Snijders,Linda S. Sparke,G. M. Stirpe,R. E. Stoner,W. H. Sun,E. van Groningen,R. M. Wagner,S. Wagner,Ignaz Wanders,W. F. Welsh,R. J. Weymann,Belinda Jane Wilkes,W. Zheng +84 more
TL;DR: In this paper, the results of an intensive ultraviolet monitoring campaign on the Seyfert 1 galaxy NGC 4151, as part of an effort to study its short-timescale variability over a broad range in wavelength.