R
Roger Blandford
Researcher at Stanford University
Publications - 716
Citations - 97353
Roger Blandford is an academic researcher from Stanford University. The author has contributed to research in topics: Galaxy & Fermi Gamma-ray Space Telescope. The author has an hindex of 156, co-authored 704 publications receiving 90181 citations. Previous affiliations of Roger Blandford include SLAC National Accelerator Laboratory & Max Planck Society.
Papers
More filters
Journal ArticleDOI
Optical Caustics in a Kerr Spacetime and the Origin of Rapid X-Ray Variability in Active Galactic Nuclei
Kevin P. Rauch,Roger Blandford +1 more
Journal ArticleDOI
Cosmology from gravitational lens time delays and Planck data
Sherry H. Suyu,Tommaso Treu,Stefan Hilbert,Alessandro Sonnenfeld,Matthew W. Auger,Roger Blandford,Thomas E. Collett,Frederic Courbin,Christopher D. Fassnacht,Léon V. E. Koopmans,Philip J. Marshall,Philip J. Marshall,Georges Meylan,Chiara Spiniello,Malte Tewes +14 more
TL;DR: In this paper, an analysis of the gravitational lens RXJ1131-1231 is presented, which is improved in one particular regard: the issue of systematic error introduced by an assumed lens model density profile.
Journal ArticleDOI
Gamma-ray activity in the crab nebula: the exceptional flare of 2011 april
R. Buehler,Jeffrey D. Scargle,Roger Blandford,Luca Baldini,Matthew G. Baring,Andrea Belfiore,Andrea Belfiore,Andrea Belfiore,Eric Charles,James Chiang,Filippo D'Ammando,Charles D. Dermer,Stefan Funk,J. E. Grove,Alice K. Harding,E. Hays,Matthew Kerr,Francesco Massaro,M. N. Mazziotta,Roger W. Romani,P. M. Saz Parkinson,Allyn F. Tennant,Martin C. Weisskopf +22 more
TL;DR: A gamma-ray flare in the Crab nebula lasting for approximately nine days in April of 2011 was observed by the Large Area Telescope on board the Fermi satellite as discussed by the authors, where the peak photon flux was (186 +/- 6) x 10(exp -7) /square cm/s above 100 MeV.
Journal ArticleDOI
Relativistic Jets in Active Galactic Nuclei
TL;DR: In this article, it was shown that AGN jets are formed when the black hole spins and the accretion disk is strongly magnetized, perhaps on account of gas accreting at high latitude beyond the blackhole sphere of influence.
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).