New Measurements of the Ionizing Ultraviolet Background over 2 < z < 5 and Implications for Hydrogen Reionization
George D. Becker,James S. Bolton +1 more
TLDR
In this paper, the intensity of the ionizing ultraviolet background and the global emissivity of ionizing photons over 2 4 and possibly at all redshifts z > 2.4 were measured.Abstract:
We present new measurements of the intensity of the ionizing ultraviolet background and the global emissivity of ionizing photons over 2 4, and possibly at all redshifts z > 2.4. Our results suggest that the globally-averaged ionizing "efficiency" of star-forming galaxies increases substantially with redshift over 3.2 5.read more
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Journal ArticleDOI
Cosmic Reionization and Early Star-forming Galaxies: a Joint Analysis of new Constraints From Planck and the Hubble Space Telescope
TL;DR: In this paper, the authors discuss new constraints on the epoch of cosmic reionization and test the assumption that most of the ionizing photons responsible arose from high-redshift star-forming galaxies.
Journal ArticleDOI
The birth of a galaxy – III. Propelling reionization with the faintest galaxies
John H. Wise,Vasiliy Demchenko,Martin Halicek,Michael L. Norman,Matthew J. Turk,Tom Abel,Britton D. Smith +6 more
TL;DR: Wise et al. as mentioned in this paper used a cosmological radiation hydrodynamics simulation to find a Thomson scattering optical depth consistent with the latest Planck results at z = 4−6.
Journal ArticleDOI
Cosmic Reionization after Planck: Could Quasars Do It All?
Piero Madau,Francesco Haardt +1 more
TL;DR: Madau et al. as discussed by the authors assess a model of late cosmic reionization in which the ionizing background radiation arises entirely from highredshift quasars and other active galactic nuclei (AGNs).
Journal ArticleDOI
Evidence of patchy hydrogen reionization from an extreme Lyα trough below redshift six
TL;DR: In this article, the authors report the discovery of an extremely long (∼110 Mpc/h) and dark (τeff≳7) Lyα trough extending down to z≃5.5 towards the zem≃6.0 quasar ULAS J0148+0600.
Journal ArticleDOI
Reionization after Planck: The Derived Growth of the Cosmic Ionizing Emissivity now matches the Growth of the Galaxy UV Luminosity Density
Rychard Bouwens,Rychard Bouwens,Garth D. Illingworth,Pascal Oesch,Joseph Caruana,Benne W. Holwerda,Renske Smit,Stephen M. Wilkins +7 more
TL;DR: In this article, a simple two-parameter model was proposed to map out the evolution in the emissivity at z>~6 from the new Planck optical depth tau measurements, from the constraints provided by quasar absorption spectra and from the prevalence of Ly-alpha emission in z~7-8 galaxies.
References
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Journal ArticleDOI
The Sloan Digital Sky Survey: Technical Summary
TL;DR: The Sloan Digital Sky Survey (SDSS) as mentioned in this paper provides the data to support detailed investigations of the distribution of luminous and non-luminous matter in the Universe: a photometrically and astrometrically calibrated digital imaging survey of pi steradians above about Galactic latitude 30 degrees in five broad optical bands.
Journal ArticleDOI
The Sloan Digital Sky Survey: Technical summary
Donald G. York,Jennifer Adelman,John E. Anderson,Scott F. Anderson,James Annis,Neta A. Bahcall,J. A. Bakken,Robert H. Barkhouser,Steven Bastian,E. Berman,William N. Boroski,Steve Bracker,Charlie Briegel,John W. Briggs,Jon Brinkmann,Robert J. Brunner,Scott Burles,Larry N. Carey,Michael A. Carr,Francisco J. Castander,Francisco J. Castander,Bing Chen,Patrick L. Colestock,Andrew J. Connolly,James H. Crocker,István Csabai,István Csabai,Paul C. Czarapata,John Eric Davis,Mamoru Doi,Tom Dombeck,Daniel J. Eisenstein,Nancy Ellman,Brian R. Elms,Brian R. Elms,Michael L. Evans,Xiaohui Fan,Glenn R. Federwitz,Larry Fiscelli,Scott D. Friedman,Joshua A. Frieman,Joshua A. Frieman,Masataka Fukugita,Bruce Gillespie,James E. Gunn,Vijay K. Gurbani,Ernst De Haas,M. Haldeman,Frederick H. Harris,Jeffrey J. E. Hayes,Timothy M. Heckman,Gregory S. Hennessy,Robert B. Hindsley,S. Holm,Donald J. Holmgren,Chi Hao Huang,Charles L. Hull,Don Husby,Shin-Ichi Ichikawa,Takashi Ichikawa,Zěljko Ivezić,Stephen M. Kent,Rita S. J. Kim,E. Kinney,Mark A. Klaene,A. N. Kleinman,Scot Kleinman,Gillian R. Knapp,John Korienek,Richard G. Kron,Richard G. Kron,Peter Z. Kunszt,D. Q. Lamb,Brian C. Lee,R. French Leger,Siriluk Limmongkol,Carl Lindenmeyer,Dan Long,Craig Loomis,Jon Loveday,Rich Lucinio,Robert H. Lupton,Bryan Mackinnon,Bryan Mackinnon,Edward J. Mannery,Paul M. Mantsch,Bruce Margon,Peregrine M. McGehee,Timothy A. McKay,Avery Meiksin,Aronne Merelli,David G. Monet,Jeffrey A. Munn,Vijay K. Narayanan,Thomas Nash,Eric H. Neilsen,Rich Neswold,Heidi Jo Newberg,Heidi Jo Newberg,Robert C. Nichol,T. Nicinski,T. Nicinski,Mario Nonino,Norio Okada,Sadanori Okamura,Jeremiah P. Ostriker,Russell Owen,A. George Pauls,John Peoples,R. Peterson,Don Petravick,Jeffrey R. Pier,Adrian Pope,Ruth Pordes,Angela Prosapio,R. Rechenmacher,Thomas R. Quinn,Gordon T. Richards,Michael Richmond,Claudio H. Rivetta,Constance M. Rockosi,Kurt Ruthmansdorfer,Dale Sandford,David J. Schlegel,Donald P. Schneider,Maki Sekiguchi,G. Sergey,Kazuhiro Shimasaku,Walter A. Siegmund,Stephen A. Smee,J. Allyn Smith,S. A. Snedden,Robert Stone,Chris Stoughton,Michael A. Strauss,Christopher W. Stubbs,Mark SubbaRao,Alexander S. Szalay,István Szapudi,Gyula P. Szokoly,Anirudda R. Thakar,Christy Tremonti,Douglas L. Tucker,Alan Uomoto,Daniel E. Vanden Berk,Michael S. Vogeley,Patrick Waddell,Shu I. Wang,Masaru Watanabe,David H. Weinberg,Brian Yanny,Naoki Yasuda +151 more
TL;DR: The Sloan Digital Sky Survey (SDSS) as discussed by the authors provides the data to support detailed investigations of the distribution of luminous and non-luminous matter in the universe: a photometrically and astrometrically calibrated digital imaging survey of π sr above about Galactic latitude 30° in five broad optical bands to a depth of g' ~ 23 mag.
Journal ArticleDOI
Planck 2013 results. XVI. Cosmological parameters
Peter A. R. Ade,Nabila Aghanim,C. Armitage-Caplan,Monique Arnaud,M. Ashdown,Fernando Atrio-Barandela,J. Aumont,Carlo Baccigalupi,A. J. Banday,A. J. Banday,R. B. Barreiro,James G. Bartlett,James G. Bartlett,E. Battaner,K. Benabed,Alain Benoit,A. Benoit-Lévy,A. Benoit-Lévy,J.-P. Bernard,J.-P. Bernard,Marco Bersanelli,Marco Bersanelli,P. Bielewicz,P. Bielewicz,P. Bielewicz,Jérôme Bobin,James J. Bock,Anna Bonaldi,J. R. Bond,Julian Borrill,Julian Borrill,François R. Bouchet,M. Bridges,M. Bucher,Carlo Burigana,Carlo Burigana,R. C. Butler,Erminia Calabrese,B. Cappellini,Jean-François Cardoso,Jean-François Cardoso,Jean-François Cardoso,A. Catalano,A. Catalano,Anthony Challinor,A. Chamballu,A. Chamballu,A. Chamballu,Ranga-Ram Chary,Xin Chen,H. C. Chiang,H. C. Chiang,Lung-Yih Chiang,P. R. Christensen,Sarah E. Church,David L. Clements,S. Colombi,L. P. L. Colombo,L. P. L. Colombo,F. Couchot,A. Coulais,B. P. Crill,A. Curto,A. Curto,F. Cuttaia,Luigi Danese,R. D. Davies,R. J. Davis,P. de Bernardis,A. de Rosa,G. de Zotti,G. de Zotti,Jacques Delabrouille,J.-M. Delouis,F.-X. Désert,Clive Dickinson,Jose M. Diego,Klaus Dolag,H. Dole,H. Dole,S. Donzelli,Olivier Doré,Marian Douspis,Jo Dunkley,X. Dupac,George Efstathiou,F. Elsner,Torsten A. Enßlin,H. K. Eriksen,Fabio Finelli,Olivier Forni,Olivier Forni,M. Frailis,Aurelien A. Fraisse,E. Franceschi,T. C. Gaier,S. Galeotta,S. Galli,K. Ganga,M. Giard,M. Giard,G. Giardino,Y. Giraud-Héraud,E. Gjerløw,J. González-Nuevo,J. González-Nuevo,Krzysztof M. Gorski,Krzysztof M. Gorski,Serge Gratton,A. Gregorio,A. Gregorio,Alessandro Gruppuso,Jon E. Gudmundsson,J. Haissinski,Jan Hamann,F. K. Hansen,Duncan Hanson,Duncan Hanson,Duncan Hanson,D. L. Harrison,Sophie Henrot-Versille,C. Hernández-Monteagudo,D. Herranz,S. R. Hildebrandt,E. Hivon,Michael P. Hobson,W. A. Holmes,Allan Hornstrup,Z. Hou,W. Hovest,Kevin M. Huffenberger,Andrew H. Jaffe,T. R. Jaffe,T. R. Jaffe,J. Jewell,W. C. Jones,Mika Juvela,E. Keihänen,Reijo Keskitalo,Reijo Keskitalo,Theodore Kisner,R. Kneissl,R. Kneissl,J. Knoche,Lloyd Knox,Martin Kunz,Martin Kunz,Martin Kunz,Hannu Kurki-Suonio,Hannu Kurki-Suonio,Guilaine Lagache,Anne Lähteenmäki,Anne Lähteenmäki,J.-M. Lamarre,Anthony Lasenby,Massimiliano Lattanzi,René J. Laureijs,Charles R. Lawrence,S. Leach,J. P. Leahy,R. Leonardi,Jonathan León-Tavares,Jonathan León-Tavares,Julien Lesgourgues,Julien Lesgourgues,Antony Lewis,Michele Liguori,P. B. Lilje,M. Linden-Vørnle,M. López-Caniego,Philip Lubin,J. F. Macías-Pérez,Bruno Maffei,Davide Maino,Davide Maino,N. Mandolesi,N. Mandolesi,N. Mandolesi,Michele Maris,D. J. Marshall,Peter G. Martin,E. Martínez-González,Silvia Masi,Marcella Massardi,Sabino Matarrese,F. Matthai,Pasquale Mazzotta,Peter Meinhold,Alessandro Melchiorri,Jean-Baptiste Melin,L. Mendes,Eloisa Menegoni,A. Mennella,A. Mennella,M. Migliaccio,Marius Millea,Subhabrata Mitra,Subhabrata Mitra,M.-A. Miville-Deschênes,M.-A. Miville-Deschênes,A. Moneti,L. Montier,L. Montier,Gianluca Morgante,Daniel J. Mortlock,Adam Moss,Dipak Munshi,J. A. Murphy,Pavel Naselsky,Federico Nati,Paolo Natoli,Paolo Natoli,Paolo Natoli,Calvin B. Netterfield,Hans Ulrik Nørgaard-Nielsen,F. Noviello,Dmitry Novikov,I. D. Novikov,I. J. O'Dwyer,S. Osborne,Carol Anne Oxborrow,F. Paci,L. Pagano,F. Pajot,Roberta Paladini,Daniela Paoletti,Bruce Partridge,F. Pasian,G. Patanchon,David Pearson,T. J. Pearson,Hiranya V. Peiris,O. Perdereau,L. Perotto,Francesca Perrotta,Valeria Pettorino,F. Piacentini,M. Piat,E. Pierpaoli,Davide Pietrobon,Stéphane Plaszczynski,P. Platania,Etienne Pointecouteau,Etienne Pointecouteau,G. Polenta,G. Polenta,N. Ponthieu,N. Ponthieu,L. Popa,T. Poutanen,T. Poutanen,T. Poutanen,G. W. Pratt,G. Prézeau,Simon Prunet,J.-L. Puget,Jörg P. Rachen,William T. Reach,Rafael Rebolo,Rafael Rebolo,M. Reinecke,Mathieu Remazeilles,Mathieu Remazeilles,Mathieu Remazeilles,C. Renault,S. Ricciardi,T. Riller,I. Ristorcelli,I. Ristorcelli,Graca Rocha,C. Rosset,G. Roudier,G. Roudier,G. Roudier,Michael Rowan-Robinson,Jose Alberto Rubino-Martin,Jose Alberto Rubino-Martin,Ben Rusholme,M. Sandri,D. Santos,M. Savelainen,Giorgio Savini,Douglas Scott,Michael Seiffert,E. P. S. Shellard,Locke D. Spencer,Jean-Luc Starck,V. Stolyarov,V. Stolyarov,Radek Stompor,R. V. Sudiwala,R. A. Sunyaev,F. Sureau,D. Sutton,A.-S. Suur-Uski,A.-S. Suur-Uski,J.-F. Sygnet,J. A. Tauber,D. Tavagnacco,D. Tavagnacco,Luca Terenzi,L. Toffolatti,L. Toffolatti,M. Tomasi,M. Tristram,M. Tucci,M. Tucci,J. Tuovinen,Marc Türler,G. Umana,Luca Valenziano,Jussi-Pekka Väliviita,Jussi-Pekka Väliviita,Jussi-Pekka Väliviita,B. Van Tent,P. Vielva,Fabrizio Villa,Nicola Vittorio,L. A. Wade,Benjamin D. Wandelt,Benjamin D. Wandelt,Ingunn Kathrine Wehus,Martin White,Simon D. M. White,Althea Wilkinson,D. Yvon,Andrea Zacchei,Andrea Zonca +327 more
TL;DR: In this paper, the authors present the first cosmological results based on Planck measurements of the cosmic microwave background (CMB) temperature and lensing-potential power spectra, which are extremely well described by the standard spatially-flat six-parameter ΛCDM cosmology with a power-law spectrum of adiabatic scalar perturbations.
Journal ArticleDOI
Planck 2013 results. XVI. Cosmological parameters
Peter A. R. Ade,Nabila Aghanim,C. Armitage-Caplan,Monique Arnaud,M. Ashdown,Fernando Atrio-Barandela,J. Aumont,Carlo Baccigalupi,A. J. Banday,R. B. Barreiro,James G. Bartlett,E. Battaner,K. Benabed,Alain Benoit,A. Benoit-Lévy,J.-P. Bernard,Marco Bersanelli,P. Bielewicz,Jérôme Bobin,James J. Bock,Anna Bonaldi,J. R. Bond,Julian Borrill,François R. Bouchet,M. Bridges,M. Bucher,Carlo Burigana,R. C. Butler,Erminia Calabrese,B. Cappellini,Jean-François Cardoso,A. Catalano,Anthony Challinor,A. Chamballu,Ranga-Ram Chary,Xin Chen,H. C. Chiang,Lung-Yih Chiang,P. R. Christensen,Sarah E. Church,David L. Clements,S. Colombi,L. P. L. Colombo,F. Couchot,A. Coulais,B. P. Crill,A. Curto,F. Cuttaia,Luigi Danese,R. D. Davies,R. J. Davis,P. de Bernardis,A. de Rosa,G. de Zotti,Jacques Delabrouille,J.-M. Delouis,F.-X. Désert,Clive Dickinson,Jose M. Diego,Klaus Dolag,H. Dole,S. Donzelli,Olivier Doré,Marian Douspis,Jo Dunkley,X. Dupac,George Efstathiou,F. Elsner,Torsten A. Enßlin,H. K. Eriksen,Fabio Finelli,Olivier Forni,M. Frailis,Aurelien A. Fraisse,E. Franceschi,T. C. Gaier,S. Galeotta,Silvia Galli,K. Ganga,M. Giard,Giovanna Giardino,Y. Giraud-Héraud,E. Gjerløw,J. González-Nuevo,Krzysztof M. Gorski,Serge Gratton,A. Gregorio,Alessandro Gruppuso,Jon E. Gudmundsson,J. Haissinski,Jan Hamann,F. K. Hansen,Duncan Hanson,D. L. Harrison,Sophie Henrot-Versille,C. Hernández-Monteagudo,D. Herranz,S. R. Hildebrandt,E. Hivon,Michael P. Hobson,W. A. Holmes,Allan Hornstrup,Z. Hou,W. Hovest,Kevin M. Huffenberger,Andrew H. Jaffe,T. R. Jaffe,J. Jewell,W. C. Jones,Mika Juvela,E. Keihänen,Reijo Keskitalo,Theodore Kisner,R. Kneissl,J. Knoche,Lloyd Knox,Martin Kunz,Hannu Kurki-Suonio,Guilaine Lagache,Anne Lähteenmäki,J.-M. Lamarre,Anthony Lasenby,Massimiliano Lattanzi,R. J. Laureijs,Charles R. Lawrence,S. Leach,J. P. Leahy,R. Leonardi,J. Leon-Tavares,Julien Lesgourgues,Antony Lewis,Michele Liguori,P. B. Lilje,M. Linden-Vørnle,M. López-Caniego,Philip Lubin,J. F. Macías-Pérez,Bruno Maffei,Davide Maino,N. Mandolesi,Michele Maris,D. J. Marshall,Peter G. Martin,E. Martínez-González,Silvia Masi,Marcella Massardi,Sabino Matarrese,F. Matthai,Pasquale Mazzotta,Peter Meinhold,Alessandro Melchiorri,J.-B. Melin,L. Mendes,Eloisa Menegoni,A. Mennella,M. Migliaccio,M. Millea,Subhabrata Mitra,M.-A. Miville-Deschênes,A. Moneti,L. Montier,Gianluca Morgante,Daniel J. Mortlock,Adam Moss,Dipak Munshi,J. A. Murphy,Pavel Naselsky,Federico Nati,Paolo Natoli,Calvin B. Netterfield,Hans Ulrik Nørgaard-Nielsen,F. Noviello,Dmitry Novikov,I. D. Novikov,I. J. O'Dwyer,S. Osborne,Carol Anne Oxborrow,F. Paci,L. Pagano,F. Pajot,Daniela Paoletti,Bruce Partridge,F. Pasian,G. Patanchon,David Pearson,T. J. Pearson,H. V. Peiris,O. Perdereau,L. Perotto,Francesca Perrotta,Valeria Pettorino,F. Piacentini,M. Piat,E. Pierpaoli,Davide Pietrobon,Stéphane Plaszczynski,Paola Platania,Etienne Pointecouteau,G. Polenta,N. Ponthieu,L. Popa,T. Poutanen,G. W. Pratt,G. Prézeau,Simon Prunet,J.-L. Puget,Jörg P. Rachen,William T. Reach,Rafael Rebolo,M. Reinecke,Mathieu Remazeilles,C. Renault,S. Ricciardi,T. Riller,I. Ristorcelli,Graca Rocha,C. Rosset,G. Roudier,Michael Rowan-Robinson,Jose Alberto Rubino-Martin,Ben Rusholme,M. Sandri,D. Santos,M. Savelainen,Giorgio Savini,Douglas Scott,Michael Seiffert,E. P. S. Shellard,Locke D. Spencer,Jean-Luc Starck,V. Stolyarov,R. Stompor,R. V. Sudiwala,R. A. Sunyaev,F. Sureau,D. Sutton,A.-S. Suur-Uski,J.-F. Sygnet,J. A. Tauber,Daniele Tavagnacco,Luca Terenzi,L. Toffolatti,M. Tomasi,M. Tristram,M. Tucci,J. Tuovinen,M. Turler,G. Umana,Luca Valenziano,Jussi-Pekka Väliviita,B. Van Tent,P. Vielva,Fabrizio Villa,Nicola Vittorio,L. A. Wade,Benjamin D. Wandelt,Ingunn Kathrine Wehus,Martin White,Simon D. M. White,Althea Wilkinson,D. Yvon,Andrea Zacchei,Andrea Zonca +262 more
TL;DR: In this paper, the authors present the first results based on Planck measurements of the CMB temperature and lensing-potential power spectra, which are extremely well described by the standard spatially-flat six-parameter LCDM cosmology.
Journal ArticleDOI
The Cosmological simulation code GADGET-2
TL;DR: GADGET-2 as mentioned in this paper is a massively parallel tree-SPH code, capable of following a collisionless fluid with the N-body method, and an ideal gas by means of smoothed particle hydrodynamics.
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