F
Frederick B. Davies
Researcher at Max Planck Society
Publications - 122
Citations - 5176
Frederick B. Davies is an academic researcher from Max Planck Society. The author has contributed to research in topics: Quasar & Reionization. The author has an hindex of 32, co-authored 103 publications receiving 3724 citations. Previous affiliations of Frederick B. Davies include University of California, Los Angeles & Lawrence Berkeley National Laboratory.
Papers
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Journal ArticleDOI
An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5
Eduardo Bañados,Bram Venemans,Chiara Mazzucchelli,Emanuele Paolo Farina,Fabian Walter,Feige Wang,Roberto Decarli,Roberto Decarli,Daniel Stern,Xiaohui Fan,Frederick B. Davies,Joseph F. Hennawi,Robert A. Simcoe,Monica L. Turner,Monica L. Turner,Hans-Walter Rix,Jinyi Yang,Daniel D. Kelson,Gwen C. Rudie,Jan Martin Winters +19 more
TL;DR: Strong evidence of absorption of the spectrum of the quasar redwards of the Lyman α emission line (the Gunn–Peterson damping wing), as would be expected if a significant amount of the hydrogen in the intergalactic medium surrounding J1342 + 0928 is neutral, and a significant fraction of neutral hydrogen is derived, although the exact fraction depends on the modelling.
Journal ArticleDOI
The Structure and Dynamics of the Subparsec Jet in M87 Based on 50 VLBA Observations over 17 Years at 43 GHz
Journal ArticleDOI
Quantitative constraints on the reionization history from the igm damping wing signature in two quasars at z > 7
Frederick B. Davies,Joseph F. Hennawi,Joseph F. Hennawi,Eduardo Bañados,Zarija Lukić,Roberto Decarli,Roberto Decarli,Xiaohui Fan,Emanuele Paolo Farina,Chiara Mazzucchelli,Hans-Walter Rix,Bram Venemans,Fabian Walter,Feige Wang,Feige Wang,Jinyi Yang,Jinyi Yang +16 more
TL;DR: Davies et al. as mentioned in this paper combined a large-volume semi-numerical simulation of reionization topology with 1D radiative transfer through high-resolution hydrodynamical simulations of the high-redshift universe to construct models of quasar transmission spectra.
Journal ArticleDOI
The 2010 very high energy gamma-ray flare and 10 years of multi-wavelength observations of M 87
A. Abramowski,Fabio Acero,Felix Aharonian,Felix Aharonian,Felix Aharonian,A. G. Akhperjanian,Gisela Anton,A. Balzer,Anna Barnacka,U. Barres de Almeida,Yvonne Becherini,J. K. Becker,B. Behera,Konrad Bernlöhr,Konrad Bernlöhr,E. Birsin,Jonathan Biteau,A. Bochow,Catherine Boisson,J. Bolmont,Pol Bordas,J. Brucker,Francois Brun,Pierre Brun,Tomasz Bulik,I. Büsching,I. Büsching,Svenja Carrigan,Sabrina Casanova,M. Cerruti,P. M. Chadwick,A. Charbonnier,R. C. G. Chaves,A. Cheesebrough,A. C. Clapson,G. Coignet,G. Cologna,Jan Conrad,M. Dalton,M. K. Daniel,I. D. Davids,B. Degrange,Christoph Deil,Hugh Dickinson,A. Djannati-Ata,W. Domainko,Luke O'c. Drury,Guillaume Dubus,K. Dutson,J. Dyks,Michal Dyrda,Kathrin Egberts,Peter Eger,P. Espigat,L. Fallon,Christian Farnier,S. J. Fegan,F. Feinstein,M. V. Fernandes,A. Fiasson,Gerard Fontaine,A. Förster,M. Füling,Y. A. Gallant,Henning Gast,L. Gérard,D. Gerbig,B. Giebels,J. F. Glicenstein,B. Glück,P. Goret,D. Göring,S. Häffner,J. D. Hague,D. Hampf,M. Hauser,S. Heinz,G. Heinzelmann,Gilles Henri,G. Hermann,Jim Hinton,A. Hoffmann,Werner Hofmann,Petter Hofverberg,Markus Holler,Dieter Horns,A. Jacholkowska,O. C. de Jager,C. Jahn,Marek Jamrozy,I. Jung,M. A. Kastendieck,K. Katarzyński,U. F. Katz,Sarah Kaufmann,D. Keogh,D. Khangulyan,B. Khélifi,D. Klochkov,Włodek Kluźniak,T. Kneiske,Nu. Komin,K. Kosack,R. Kossakowski,H. Laffon,G. Lamanna,Dirk Lennarz,Thomas Lohse,A. Lopatin,Chia-Chun Lu,V. Marandon,Alexandre Marcowith,J. Masbou,David Maurin,N. Maxted,M. Mayer,T. J. L. McComb,M. C. Medina,J. Mehault,Rafał Moderski,E. Moulin,C. L. Naumann,M. Naumann-Godo,M. de Naurois,D. Nedbal,D. Nekrassov,N. Nguyen,B. Nicholas,Jacek Niemiec,S. J. Nolan,Stefan Ohm,Stefan Ohm,Stefan Ohm,E. de Oã Wilhelmi,B. Opitz,Michał Ostrowski,I. Oya,M. Panter,M. Paz Arribas,G. Pedaletti,G. Pelletier,P.-O. Petrucci,S. Pita,G. Pühlhofer,Michael Punch,Andreas Quirrenbach,Martin Raue,S. M. Rayner,A. Reimer,Olaf Reimer,M. Renaud,R. de los Reyes,Frank M. Rieger,Frank M. Rieger,Joachim Ripken,L. Rob,S. Rosier-Lees,Gavin Rowell,B. Rudak,Cameron B Rulten,J. Ruppel,V. Sahakian,Daniel Sánchez,Andrea Santangelo,Reinhard Schlickeiser,F. M. Schöck,A. Schulz,Ullrich Schwanke,S. Schwarzburg,S. Schwemmer,F. Sheidaei,F. Sheidaei,J. L. Skilton,Helene Sol,G. Spengler,Stawarz,R. Steenkamp,C. Stegmann,F. Stinzing,K. Stycz,Iurii Sushch,Anna Szostek,J.-P. Tavernet,Regis Terrier,M. Tluczykont,K. Valerius,C. van Eldik,G. Vasileiadis,Christo Venter,J. P. Vialle,Aion Viana,P. Vincent,Heinrich J. Völk,Francesca Volpe,S. Vorobiov,M. J. Vorster,Stefan Wagner,Martin Ward,R. White,Alicja Wierzcholska,Michael Zacharias,Anna Zajczyk,Anna Zajczyk,Andrzej A. Zdziarski,A. Zech,H.-S. Zechlin,Jelena Aleksić,L. A. Antonelli,P. Antoranz,Michael Backes,J. A. Barrio,Denis Bastieri,J. Becerra Gonzlez,W. Bednarek,A. Berdyugin,K. Berger,Elisa Bernardini,Adrian Biland,Oscar Blanch,Ralph Bock,A. Boller,Giacomo Bonnoli,D. Borla Tridon,Ilana M. Braun,Thomas Bretz,A. Cãellas,E. Carmona,A. Carosi,Pierre Colin,E. Colombo,Jose Luis Contreras,Juan Cortina,L. Cossio,Stefano Covino,Francesco Dazzi,A. De Angelis,E. De Cea del Pozo,B. De Lotto,C. Delgado Mendez,A. Diago Ortega,M. Doert,Aaron Dominguez,D. Dominis Prester,Daniela Dorner,Michele Doro,Dominik Elsaesser,Daniel Ferenc,M. V. Fonseca,Ll. Font,Christian Fruck,R. J. García López,M. Garczarczyk,D. Garrido,Gianluca Giavitto,Nikola Godinovic,D. Hadasch,D. Häfner,A. Herrero,D. Hildebrand,D. Höhne-Mönch,J. Hose,Dario Hrupec,B. Huber,T. Jogler,S. Klepser,T. Krähenbühl,J. Krause,A. La Barbera,Damir Lelas,E. Leonardo,Elina Lindfors,Saverio Lombardi,M. A. Lopez,E. Lorenz,M. Makariev,G. Maneva,Nijil Mankuzhiyil,Karl Mannheim,L. Maraschi,Mosè Mariotti,M. I. Martínez,D. Mazin,Mario Meucci,Jose Miguel Miranda,R. Mirzoyan,Hiroko Miyamoto,J. Moldón,Abelardo Moralejo,P. Munar,Daniel Nieto,Kari Nilsson,Reiko Orito,David Paneque,Riccardo Paoletti,Silvia Pardo,J. M. Paredes,S. Partini,M. Pasanen,Felicitas Pauss,M. A. Perez-Torres,Massimo Persic,L. Peruzzo,M. Pilia,J. Pochon,Francisco Prada,P. G. Prada Moroni,E. Prandini,Ivica Puljak,Ignasi Reichardt,R. Reinthal,Wolfgang Rhode,Marc Ribó,J. Rico,S. Rügamer,A. Saggion,K. Saito,Takashi Saito,M. Salvati,Konstancja Satalecka,V. Scalzotto,V. Scapin,C. Schultz,T. Schweizer,M. Shayduk,S. N. Shore,A. Sillanpää,Julian Sitarek,Dorota Sobczyńska,Felix Spanier,S. Spiro,Antonio Stamerra,B. Steinke,J. Storz,N. Strah,Tihomir Surić,L. O. Takalo,Hajime Takami,Fabrizio Tavecchio,P. Temnikov,Tomislav Terzić,D. Tescaro,Masahiro Teshima,M. Thom,O. Tibolla,Diego F. Torres,Aldo Treves,H. Vankov,Patrick Vogler,Robert Wagner,Q. Weitzel,Victor Zabalza,Fabio Zandanel,Roberta Zanin,T. C. Arlen,T. Aune,Matthias Beilicke,Wystan Benbow,A. Bouvier,S. M. Bradbury,J. H. Buckley,V. Bugaev,Karen Byrum,A. Cannon,A. Cesarini,L. Ciupik,M. P. Connolly,Wei Cui,R. Dickherber,C. Duke,Manel Errando,A. D. Falcone,J. P. Finley,G. Finnegan,Lucy Fortson,Amy Furniss,N. Galante,Daniel Gall,S. Godambe,Sinéad M. Griffin,J. Grube,Geza Gyuk,D. S. Hanna,Jamie Holder,H. Huan,C. M. Hui,P. Kaaret,N. Karlsson,M. Kertzman,Y. Khassen,David Kieda,Henric Krawczynski,F. Krennrich,M. J. Lang,S. LeBohec,Gernot Maier,S. McArthur,A. McCann,P. Moriarty,Reshmi Mukherjee,P. D. Nũez,R. A. Ong,Matthew R. Orr,A. N. Otte,N. H. Park,J. S. Perkins,J. S. Perkins,A. Pichel,Martin Pohl,H. Prokoph,K. Ragan,Luis C. Reyes,P. T. Reynolds,E. Roache,H. J. Rose,M. Schroedter,G. H. Sembroski,G. D. Şentürk,I. Telezhinsky,G. Teić,M. Theiling,S. Thibadeau,A. Varlotta,Vladimir Vassiliev,M. Vivier,S. P. Wakely,T. C. Weekes,David A. Williams,B. Zitzer,Mihai Cara,Carolina Casadio,C. C. Cheung,C. C. Cheung,W. McConville,W. McConville,Frederick B. Davies,Akihiro Doi,Gabriele Giovannini,Marcello Giroletti,Kazuhiro Hada,Kazuhiro Hada,P. E. Hardee,D. E. Harris,W. Junor,Motoki Kino,N. P. Lee,Chun Ly,J. P. Madrid,Francesco Massaro,Carole Mundell,Hiroshi Nagai,Eric S. Perlman,Iain A. Steele,R. C. Walker,D. L. Wood +453 more
TL;DR: The long-term multi-wavelength light curve of M 87, spanning from radio to VHE and including data from Hubble Space Telescope, Liverpool Telescope, Very Large Array, and European VLBI Network, is used to further investigate the origin of the VHE gamma-ray emission.
Journal ArticleDOI
Pōniuā‘ena: A Luminous z = 7.5 Quasar Hosting a 1.5 Billion Solar Mass Black Hole
Jinyi Yang,Feige Wang,Xiaohui Fan,Joseph F. Hennawi,Joseph F. Hennawi,Frederick B. Davies,Frederick B. Davies,Minghao Yue,Eduardo Bañados,Xue-Bing Wu,Bram Venemans,Aaron J. Barth,Fuyan Bian,Konstantina Boutsia,Roberto Decarli,Emanuele Paolo Farina,Richard F. Green,Linhua Jiang,Jiang-Tao Li,Chiara Mazzucchelli,Fabian Walter +20 more
TL;DR: In this article, the authors report the discovery of a luminous quasar, J1007+2115 at 7.515$ (Pōniuā'ena), from a wide-field reionization-era quasar survey.