A census of baryons in the Universe from localized fast radio bursts.
Jean-Pierre Macquart,Jason X. Prochaska,Jason X. Prochaska,Matthew McQuinn,Keith W. Bannister,Shivani Bhandari,Cherie K. Day,Cherie K. Day,Adam Deller,Ron Ekers,Ron Ekers,C. W. James,Lachlan Marnoch,Lachlan Marnoch,Stefan Oslowski,Chris Phillips,Stuart D. Ryder,D. R. Scott,Ryan Shannon,Nicolas Tejos +19 more
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TLDR
In this paper, the dispersion of a sample of localized fast radio bursts was used to determine the electron column density along each line of sight and accounts for every ionized baryon.Abstract:
More than three-quarters of the baryonic content of the Universe resides in a highly diffuse state that is difficult to detect, with only a small fraction directly observed in galaxies and galaxy clusters1,2. Censuses of the nearby Universe have used absorption line spectroscopy3,4 to observe the ‘invisible’ baryons, but these measurements rely on large and uncertain corrections and are insensitive to most of the Universe’s volume and probably most of its mass. In particular, quasar spectroscopy is sensitive either to the very small amounts of hydrogen that exist in the atomic state, or to highly ionized and enriched gas4–6 in denser regions near galaxies7. Other techniques to observe these invisible baryons also have limitations; Sunyaev–Zel’dovich analyses8,9 can provide evidence from gas within filamentary structures, and studies of X-ray emission are most sensitive to gas near galaxy clusters9,10. Here we report a measurement of the baryon content of the Universe using the dispersion of a sample of localized fast radio bursts; this technique determines the electron column density along each line of sight and accounts for every ionized baryon11–13. We augment the sample of reported arcsecond-localized14–18 fast radio bursts with four new localizations in host galaxies that have measured redshifts of 0.291, 0.118, 0.378 and 0.522. This completes a sample sufficiently large to account for dispersion variations along the lines of sight and in the host-galaxy environments11, and we derive a cosmic baryon density of $${\varOmega }_{{\rm{b}}}={0.051}_{-0.025}^{+0.021}{h}_{70}^{-1}$$ (95 per cent confidence; h70 = H0/(70 km s−1 Mpc−1) and H0 is Hubble’s constant). This independent measurement is consistent with values derived from the cosmic microwave background and from Big Bang nucleosynthesis19,20. The baryon density determined along the lines of sight to localized fast radio bursts is consistent with that determined from the cosmic microwave background and required by Big Bang nucleosynthesis.read more
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Journal ArticleDOI
A fast radio burst associated with a Galactic magnetar.
Christopher D. Bochenek,Vikram Ravi,Konstantin Belov,Gregg Hallinan,Jonathon Kocz,Jonathon Kocz,Shri Kulkarni,D. McKenna +7 more
TL;DR: A millisecond-duration radio burst from the Galactic magnetar SGR-1935+2154 with a fluence of 1.5 ± 0.3 megajansky milliseconds was detected by the STARE2 radio array in the 1,281-1,468 megahertz band.
Journal ArticleDOI
Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
Elcio Abdalla,G. F. Abell'an,Amin Aboubrahim,Adriano Agnello,Ozgur Akarsu,Yashar Akrami,George Alestas,Daniel Aloni,Luca Amendola,Luis A. Anchordoqui,Richard I. Anderson,Nikki Arendse,Marika Asgari,Mario Ballardini,Vernon Barger,Spyros Basilakos,R. C. Batista,Elia S. Battistelli,Richard A. Battye,Micol Benetti,David Benisty,Asher Berlin,P. de Bernardis,Emanuele Berti,Bohdan Bidenko,Simon Birrer,John P. Blakeslee,Kimberly K. Boddy,Clecio R. Bom,Alexander Bonilla,Nicolas Borghi,F. R. Bouchet,Matteo Braglia,Thomas Buchert,E. Buckley-Geer,Erminia Calabrese,Robert R. Caldwell,David Camarena,Salvatore Capozziello,Stefano Casertano,Geoff C. F. Chen,Jens Chluba,Angela Chen,Hsin-Yu Chen,Anton Chudaykin,Michele Cicoli,Craig J. Copi,Frederic Courbin,Francis-Yan Cyr-Racine,Bozena Czerny,Maria Giovanna Dainotti,Guido D'Amico,Anne-Christine Davis,Javier P'erez,Jaume Haro,Jacques Delabrouille,Peter B. Denton,Suhail Dhawan,Keith R. Dienes,E. Di Valentino,Pu Du,Dominique Eckert,Celia Escamilla-Rivera,A. Fert'e,Fabio Finelli,Pablo Fosalba,Wendy L. Freedman,Noemi Frusciante,Enrique Gaztanaga,William Giarè,Elena Giusarma,Adria G'omez-Valent,Will Handley,Ian Harrison,Luke Hart,Dhiraj Kumar Hazra,Alan Heavens,Asta Heinesen,Hendrik Hildebrandt,Jessica C Hill,Natalie B. Hogg,Daniel E. Holz,Deanna C. Hooper,Nikoo Hosseininejad,Dragan Huterer,Mustapha Ishak,Mikhail M. Ivanov,Andrew H. Jaffe,In Sung Jang,Karsten Jedamzik,Raul Jimenez,Melissa Joseph,Shahab Joudaki,Marc Kamionkowski,Tanvi Karwal,Lavrentios Kazantzidis,Ryan E. Keeley,Michael Klasen,Eiichiro Komatsu,Léon V. E. Koopmans,Suresh Kumar,Luca Lamagna,Ruth Lazkoz,Chung-Chi Lee,Julien Lesgourgues,Jackson Levi Said,Tiffany R. Lewis,Benjamin L'Huiller,Matteo Lucca,Roy Maartens,Lucas M. Macri,Danny Marfatia,Valerio Marra,Carlos Martins,Silvia Masi,Sabino Matarrese,Arindam Mazumdar,Alessandro Melchiorri,Olga Mena,Laura Mersini-Houghton,James B. Mertens,Dinko Milaković,Yuto Minami,V. Miranda,Cristian Moreno-Pulido,Michele Ennio Maria Moresco,David F. Mota,Emil Mottola,Simone Mozzon,J. Muir,Ankan Mukherjee,Suvodip Mukherjee,Pavel Naselsky,Pran Nath,Savvas Nesseris,Florian Niedermann,Alessio Notari,Rafael C. Nunes,Eoin 'O Colg'ain,Kayla A. Owens,Emre Ozulker,Francesco Paresce,Andronikos Paliathanasis,Antonella Palmese,Supriya Pan,Daniela Paoletti,S. E. Perez Bergliaffa,Leadros Perivolaropoulos,Dominic W. Pesce,Valeria Pettorino,Oliver H. E. Philcox,Levon Pogosian,Vivian Poulin,Gaspard Poulot,Marco Roveri,Mark J. Reid,F. Renzi,Adam G. Riess,V. I. Sabla,Paolo Salucci,Vincenzo Salzano,Emmanuel N. Saridakis,Bangalore Suryanarayana Sathyaprakash,Martin Schmaltz,N. Schoneberg,Daniel Scolnic,Anjan A. Sen,Neelima Sehgal,Arman Shafieloo,Mohammmad Mahdi Sheikh-Jabbari,Joseph Silk,Alessandra Silvestri,Foteini Skara,Martin S. Sloth,Marcelle Soares-Santos,Joan Solà Peracaula,Yu-Yang Songsheng,Jorge F. Soriano,Denitsa Staicova,Glenn D. Starkman,István Szapudi,E. Teixera,Brooks Thomas,Tommaso Treu,E. Trott,Carsten van de Bruck,Jose Alberto Vazquez,Licia Verde,Luca Visinelli,Deng Wang,Jian-Min Wang,Shao-Jiang Wang,Richard Watkins,Scott Watson,John K. Webb,Neal Weiner,Amanda Weltman,Samuel J. Witte,Radosław Wojtak,Anil Kumar Yadav,Weiqiang Yang,Gong-Bo Zhao,Miguel Zumalac'arregui +202 more
TL;DR: In this paper , the authors focus on the 5.0σ tension between the Planck CMB estimate of the Hubble constant H0 and the SH0ES collaboration measurements and discuss the importance of trying to fit a full array of data with a single model.
Journal ArticleDOI
Host galaxy properties and offset distributions of fast radio bursts: implications for their progenitors
Kasper E. Heintz,J. Xavier Prochaska,J. Xavier Prochaska,Sunil Simha,Emma Platts,Wen-fai Fong,Nicolas Tejos,Stuart D. Ryder,Kshitij Aggerwal,Shivani Bhandari,Cherie K. Day,Cherie K. Day,Adam Deller,Charles D. Kilpatrick,Casey J. Law,Jean-Pierre Macquart,Alexandra Mannings,Lachlan Marnoch,Elaine M. Sadler,Elaine M. Sadler,Ryan Shannon +20 more
Journal ArticleDOI
A fast radio burst associated with a Galactic magnetar
Christopher D. Bochenek,Vikram Ravi,Konstantin Belov,Gregg Hallinan,Jonathon Kocz,Jonathon Kocz,Shri Kulkarni,D. McKenna +7 more
TL;DR: The discovery of FRB 200428 implies that active magnetars such as SGR 1935+2154 can produce FRBs at extragalactic distances, and favours emission models that describe synchrotron masers or electromagnetic pulses powered by magnetar bursts and giant flares.
Journal ArticleDOI
A Nearby Repeating Fast Radio Burst in the Direction of M81
Mohit Bhardwaj,Bryan Gaensler,V. M. Kaspi,T. L. Landecker,R. Mckinven,Daniele Michilli,Ziggy Pleunis,Shriharsh P. Tendulkar,Shriharsh P. Tendulkar,B. C. Andersen,P. J. Boyle,T. Cassanelli,P. Chawla,A. Cook,M. A. Dobbs,Emmanuel Fonseca,J. F. Kaczmarek,Calvin Leung,Kiyoshi Masui,M. Mnchmeyer,Cherry Ng,M. Rafiei-Ravandi,M. Rafiei-Ravandi,P. Scholz,Kyung-Hoon Shin,Kendrick M. Smith,I. H. Stairs,A. V. Zwaniga +27 more
TL;DR: In this article, a repeating fast radio burst (FRB) with a low dispersion measure (DM) was detected by the Canadian Hydrogen Intensity Mapping Experiment FRB project.
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Proceedings Article
A density-based algorithm for discovering clusters in large spatial Databases with Noise
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Planck 2015 results - XIII. Cosmological parameters
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TL;DR: In this article, the authors present a cosmological analysis based on full-mission Planck observations of temperature and polarization anisotropies of the cosmic microwave background (CMB) radiation.
Journal ArticleDOI
Planck 2015 results. XIII. Cosmological parameters
Peter A. R. Ade,Nabila Aghanim,Monique Arnaud,M. Ashdown,J. Aumont,Carlo Baccigalupi,A. J. Banday,R. B. Barreiro,James G. Bartlett,N. Bartolo,E. Battaner,Richard A. Battye,K. Benabed,Alain Benoit,A. Benoit-Lévy,J.-P. Bernard,Marco Bersanelli,P. Bielewicz,J. J. Bock,Anna Bonaldi,Laura Bonavera,J. R. Bond,Julian Borrill,François R. Bouchet,F. Boulanger,M. Bucher,Carlo Burigana,R. C. Butler,Erminia Calabrese,Jean-François Cardoso,A. Catalano,Anthony Challinor,A. Chamballu,Ranga-Ram Chary,H. C. Chiang,Jens Chluba,P. R. Christensen,Sarah E. Church,David L. Clements,S. Colombi,L. P. L. Colombo,C. Combet,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,F.-X. Désert,E. Di Valentino,Clive Dickinson,Jose M. Diego,Klaus Dolag,H. Dole,S. Donzelli,Olivier Doré,Marian Douspis,A. Ducout,Jo Dunkley,X. Dupac,George Efstathiou,F. Elsner,Torsten A. Ensslin,H. K. Eriksen,Marzieh Farhang,James R. Fergusson,Fabio Finelli,Olivier Forni,M. Frailis,A. A. Fraisse,E. Franceschi,A. Frejsel,S. Galeotta,S. Galli,K. Ganga,C. Gauthier,Martina Gerbino,Tuhin Ghosh,M. Giard,Y. Giraud-Héraud,Elena Giusarma,E. Gjerløw,J. González-Nuevo,Krzysztof M. Gorski,Serge Gratton,A. Gregorio,Alessandro Gruppuso,Jon E. Gudmundsson,Jan Hamann,F. K. Hansen,Duncan Hanson,D. L. Harrison,George Helou,Sophie Henrot-Versille,C. Hernández-Monteagudo,D. Herranz,S. R. Hildebrandt,E. Hivon,Michael P. Hobson,W. A. Holmes,Allan Hornstrup,W. Hovest,Zhiqi Huang,Kevin M. Huffenberger,G. Hurier,Andrew H. Jaffe,T. R. Jaffe,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,Charles R. Lawrence,J. P. Leahy,R. Leonardi,Julien Lesgourgues,François Levrier,Antony Lewis,Michele Liguori,P. B. Lilje,M. Linden-Vørnle,M. López-Caniego,Philip Lubin,J. F. Macías-Pérez,G. Maggio,Davide Maino,N. Mandolesi,A. Mangilli,A. Marchini,Peter G. Martin,M. Martinelli,E. Martínez-González,Silvia Masi,Sabino Matarrese,Pasquale Mazzotta,P. McGehee,Peter Meinhold,Alessandro Melchiorri,J.-B. Melin,L. Mendes,A. Mennella,M. Migliaccio,M. Millea,S. 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,C. A. Oxborrow,F. Paci,L. Pagano,F. Pajot,R. Paladini,Daniela Paoletti,Bruce Partridge,F. Pasian,G. Patanchon,T. J. Pearson,O. Perdereau,L. Perotto,Francesca Perrotta,Valeria Pettorino,F. Piacentini,M. Piat,E. Pierpaoli,Davide Pietrobon,Stéphane Plaszczynski,Etienne Pointecouteau,G. Polenta,L. Popa,G. W. Pratt,G. Prézeau,Simon Prunet,J.-L. Puget,Jörg P. Rachen,William T. Reach,Rafael Rebolo,M. Reinecke,Mathieu Remazeilles,C. Renault,A. Renzi,I. Ristorcelli,Graca Rocha,C. Rosset,M. Rossetti,G. Roudier,B. Rouillé d'Orfeuil,Michael Rowan-Robinson,Jose Alberto Rubino-Martin,Ben Rusholme,Najla Said,Valentina Salvatelli,L. Salvati,M. Sandri,D. Santos,M. Savelainen,Giorgio Savini,Douglas Scott,Michael Seiffert,Paolo Serra,E. P. S. Shellard,Locke D. Spencer,M. Spinelli,V. Stolyarov,R. Stompor,R. Sudiwala,R. A. Sunyaev,D. Sutton,A.-S. Suur-Uski,J.-F. Sygnet,J. A. Tauber,Luca Terenzi,L. Toffolatti,M. Tomasi,M. Tristram,T. Trombetti,M. Tucci,J. Tuovinen,M. Turler,G. Umana,Luca Valenziano,Jussi-Pekka Väliviita,B. Van Tent,P. Vielva,Fabrizio Villa,L. A. Wade,Benjamin D. Wandelt,Ingunn Kathrine Wehus,Martin White,Simon D. M. White,Althea Wilkinson,D. Yvon,Andrea Zacchei,Andrea Zonca +260 more
TL;DR: In this paper, the authors present results based on full-mission Planck observations of temperature and polarization anisotropies of the CMB, which are consistent with the six-parameter inflationary LCDM cosmology.
Journal ArticleDOI
The Seventh Data Release of the Sloan Digital Sky Survey
Kevork N. Abazajian,Jennifer K. Adelman-McCarthy,Marcel A. Agüeros,S. Allam,S. Allam,Carlos Allende Prieto,Deokkeun An,Deokkeun An,K. S. J. Anderson,Scott F. Anderson,James Annis,Neta A. Bahcall,Coryn A. L. Bailer-Jones,J. C. Barentine,Bruce A. Bassett,Andrew C. Becker,Timothy C. Beers,Eric F. Bell,Vasily Belokurov,Andreas A. Berlind,E. Berman,Mariangela Bernardi,Steven J. Bickerton,Dmitry Bizyaev,John P. Blakeslee,Michael R. Blanton,John J. Bochanski,John J. Bochanski,William N. Boroski,Howard Brewington,Jarle Brinchmann,Jarle Brinchmann,Jon Brinkmann,Robert J. Brunner,Tams Budavri,Larry N. Carey,Samuel Carliles,Michael A. Carr,Francisco J. Castander,D. Cinabro,Andrew J. Connolly,I. Csabai,Carlos E. Cunha,Paul C. Czarapata,James R. A. Davenport,Ernst De Haas,B. Dilday,B. Dilday,Mamoru Doi,Daniel J. Eisenstein,Michael L. Evans,Nick Evans,Xiaohui Fan,Scott D. Friedman,Joshua A. Frieman,Joshua A. Frieman,Masataka Fukugita,Boris T. Gänsicke,Evalyn Gates,Bruce Gillespie,Gerry Gilmore,Belinda Gonzalez,Carlos F. Gonzalez,Eva K. Grebel,James E. Gunn,Zsuzsanna Gyory,Patrick B. Hall,Paul Harding,Frederick H. Harris,Michael Harvanek,Suzanne L. Hawley,Jeffrey J. E. Hayes,Timothy M. Heckman,John S. Hendry,Gregory S. Hennessy,Robert B. Hindsley,Joshua Hoblitt,Craig J. Hogan,David W. Hogg,Jon A. Holtzman,J. B. Hyde,Shin-Ichi Ichikawa,Takashi Ichikawa,Myungshin Im,Eljko Ivezić,Sebastian Jester,Linhua Jiang,Jennifer A. Johnson,Anders M. Jorgensen,Mario Juric,Stephen M. Kent,Richard Kessler,S. J. Kleinman,Gillian R. Knapp,Kohki Konishi,Richard G. Kron,Richard G. Kron,Jurek Krzesinski,Jurek Krzesinski,Nikolay Kuropatkin,Hubert Lampeitl,Svetlana Lebedeva,Myung Gyoon Lee,Young Sun Lee,R. French Leger,Sébastien Lépine,Nolan Li,Marcos Lima,Marcos Lima,Huan Lin,Dan Long,Craig P. Loomis,Jon Loveday,Robert H. Lupton,E. A. Magnier,Olena Malanushenko,Viktor Malanushenko,Rachel Mandelbaum,Bruce Margon,John Marriner,David Martínez-Delgado,Takahiko Matsubara,P. M. McGehee,Timothy A. McKay,Avery Meiksin,Heather L. Morrison,Fergal Mullally,Jeffrey A. Munn,Tara Murphy,Tara Murphy,Thomas Nash,Ada Nebot,Eric H. Neilsen,Heidi Jo Newberg,Peter R. Newman,Robert C. Nichol,T. Nicinski,Maria Nieto-Santisteban,Atsuko Nitta,Sadanori Okamura,Daniel Oravetz,Jeremiah P. Ostriker,Russell Owen,Nikhil Padmanabhan,Kaike Pan,Changbom Park,George Pauls,John Peoples,Will J. Percival,Jeffrey R. Pier,Adrian Pope,Dimitri Pourbaix,Dimitri Pourbaix,Paul A. Price,Norbert Purger,Thomas R. Quinn,M. Jordan Raddick,Paola Re Fiorentin,Paola Re Fiorentin,Gordon T. Richards,Michael Richmond,Adam G. Riess,Hans-Walter Rix,Constance M. Rockosi,Masao Sako,Masao Sako,David J. Schlegel,Donald P. Schneider,R. D. Scholz,Matthias R. Schreiber,Axel Schwope,Uroš Seljak,Uroš Seljak,Uroš Seljak,Branimir Sesar,Erin Sheldon,Erin Sheldon,K. Shimasaku,Valena C. Sibley,A. Simmons,Thirupathi Sivarani,Thirupathi Sivarani,J. Allyn Smith,Martin C. Smith,Vernesa Smolić,Stephanie A. Snedden,Albert Stebbins,Matthias Steinmetz,Chris Stoughton,Michael A. Strauss,Mark SubbaRao,Mark SubbaRao,Yasushi Suto,Alexander S. Szalay,Istvn Szapudi,Paula Szkody,Masayuki Tanaka,Max Tegmark,Luis Teodoro,Aniruddha R. Thakar,Christy Tremonti,Douglas L. Tucker,A. Uomoto,Daniel E. Vanden Berk,Daniel E. Vanden Berk,Jan Vandenberg,S. Vidrih,Michael S. Vogeley,Wolfgang Voges,Nicole P. Vogt,Yogesh Wadadekar,Yogesh Wadadekar,Shannon Watters,David H. Weinberg,Andrew A. West,Simon D. M. White,B. C. Wilhite,Alainna C. Wonders,Brian Yanny,D. R. Yocum,Donald G. York,Idit Zehavi,Stefano Zibetti,Daniel B. Zucker +223 more
TL;DR: A series of improvements to the spectroscopic reductions are described, including better flat fielding and improved wavelength calibration at the blue end, better processing of objects with extremely strong narrow emission lines, and an improved determination of stellar metallicities.
Journal ArticleDOI
The Seventh Data Release of the Sloan Digital Sky Survey
TL;DR: SDSS-II as mentioned in this paper is the last data set of the Sloan Digital Sky Survey and contains 357 million distinct objects, including 930,000 galaxies, 120,000 quasars, and 460,000 stars.
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