Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics beyond ΛCDM
Adam G. Riess,Adam G. Riess,Stefano Casertano,Stefano Casertano,Wenlong Yuan,Lucas M. Macri,Daniel Scolnic +6 more
TLDR
In this paper, an improved determination of the Hubble constant (H0) from HST observations of 70 long-period Cepheids in the Large Magellanic Cloud was presented.Abstract:
We present an improved determination of the Hubble constant (H0) from Hubble Space Telescope (HST) observations of 70 long-period Cepheids in the Large Magellanic Cloud. These were obtained with the same WFC3 photometric system used to measure Cepheids in the hosts of Type Ia supernovae. Gyroscopic control of HST was employed to reduce overheads while collecting a large sample of widely-separated Cepheids. The Cepheid Period-Luminosity relation provides a zeropoint-free link with 0.4% precision between the new 1.2% geometric distance to the LMC from Detached Eclipsing Binaries (DEBs) measured by Pietrzynski et al (2019) and the luminosity of SNe Ia. Measurements and analysis of the LMC Cepheids were completed prior to knowledge of the new LMC distance. Combined with a refined calibration of the count-rate linearity of WFC3-IR with 0.1% precision (Riess et al 2019), these three improved elements together reduce the full uncertainty in the LMC geometric calibration of the Cepheid distance ladder from 2.5% to 1.3%. Using only the LMC DEBs to calibrate the ladder we find H0=74.22 +/- 1.82 km/s/Mpc including systematic uncertainties, 3% higher than before for this particular anchor. Combining the LMC DEBs, masers in NGC 4258 and Milky Way parallaxes yields our best estimate: H0 = 74.03 +/- 1.42 km/s/Mpc, including systematics, an uncertainty of 1.91%---15% lower than our best previous result. Removing any one of these anchors changes H0 by < 0.7%. The difference between H0 measured locally and the value inferred from Planck CMB+LCDM is 6.6+/-1.5 km/s/Mpc or 4.4 sigma (P=99.999% for Gaussian errors) in significance, raising the discrepancy beyond a plausible level of chance. We summarize independent tests which show this discrepancy is not readily attributable to an error in any one source or measurement, increasing the odds that it results from a cosmological feature beyond LambdaCDM.read more
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Planck 2018 results. VI. Cosmological parameters
Nabila Aghanim,Yashar Akrami,Yashar Akrami,Yashar Akrami,M. Ashdown,J. Aumont,Carlo Baccigalupi,Mario Ballardini,Mario Ballardini,A. J. Banday,A. J. Banday,R. B. Barreiro,N. Bartolo,N. Bartolo,S. Basak,Richard A. Battye,K. Benabed,J.-P. Bernard,J.-P. Bernard,Marco Bersanelli,Marco Bersanelli,P. Bielewicz,James J. Bock,J. R. Bond,Julian Borrill,Julian Borrill,François R. Bouchet,F. Boulanger,F. Boulanger,F. Boulanger,M. Bucher,M. Bucher,Carlo Burigana,Carlo Burigana,R. C. Butler,Erminia Calabrese,Jean-François Cardoso,Julien Carron,Anthony Challinor,H. C. Chiang,H. C. Chiang,Jens Chluba,L. P. L. Colombo,C. Combet,D. Contreras,B. P. Crill,F. Cuttaia,P. de Bernardis,G. de Zotti,Jacques Delabrouille,J.-M. Delouis,E. Di Valentino,Jose M. Diego,Olivier Doré,Marian Douspis,A. Ducout,X. Dupac,S. Dusini,George Efstathiou,Franz Elsner,Torsten A. Enßlin,H. K. Eriksen,Yabebal Fantaye,Yabebal Fantaye,Marzieh Farhang,James R. Fergusson,R. Fernandez-Cobos,Fabio Finelli,Francesco Forastieri,M. Frailis,A. A. Fraisse,E. Franceschi,Andrei V. Frolov,S. Galeotta,S. Galli,K. Ganga,Ricardo Genova-Santos,Ricardo Genova-Santos,Martina Gerbino,Tuhin Ghosh,Tuhin Ghosh,J. González-Nuevo,Krzysztof M. Gorski,Krzysztof M. Gorski,Serge Gratton,Alessandro Gruppuso,Jon E. Gudmundsson,Jon E. Gudmundsson,Jan Hamann,Will Handley,F. K. Hansen,D. Herranz,S. R. Hildebrandt,E. Hivon,Zhiqi Huang,Andrew H. Jaffe,W. C. Jones,A. Karakci,E. Keihänen,Reijo Keskitalo,K. Kiiveri,K. Kiiveri,J. Kim,Theodore Kisner,Lloyd Knox,Nicoletta Krachmalnicoff,Martin Kunz,Martin Kunz,Martin Kunz,Hannu Kurki-Suonio,Hannu Kurki-Suonio,Guilaine Lagache,J.-M. Lamarre,Anthony Lasenby,Mario G. Lattanzi,Charles R. Lawrence,M. Le Jeune,P. Lemos,Julien Lesgourgues,François Levrier,Antony Lewis,Michele Liguori,Michele Liguori,P. B. Lilje,M. Lilley,V. Lindholm,V. Lindholm,M. López-Caniego,Philip Lubin,Yin-Zhe Ma,Yin-Zhe Ma,J. F. Macías-Pérez,G. Maggio,Davide Maino,Davide Maino,N. Mandolesi,N. Mandolesi,A. Mangilli,A. Marcos-Caballero,M. Maris,Peter G. Martin,Matteo Martinelli,E. Martínez-González,Sabino Matarrese,Sabino Matarrese,N. Mauri,Jason D. McEwen,Peter Meinhold,Alessandro Melchiorri,A. Mennella,A. Mennella,M. Migliaccio,Marius Millea,Marius Millea,Marius Millea,Subhabrata Mitra,Subhabrata Mitra,M.-A. Miville-Deschênes,M.-A. Miville-Deschênes,Diego Molinari,Diego Molinari,L. Montier,L. Montier,Gianluca Morgante,Adam Moss,Paolo Natoli,Paolo Natoli,Hans Ulrik Nørgaard-Nielsen,L. Pagano,L. Pagano,D. Paoletti,Bruce Partridge,G. Patanchon,Hiranya V. Peiris,Francesca Perrotta,Valeria Pettorino,F. Piacentini,L. Polastri,G. Polenta,J.-L. Puget,J.-L. Puget,Jörg P. Rachen,M. Reinecke,Mathieu Remazeilles,A. Renzi,Graca Rocha,C. Rosset,G. Roudier,G. Roudier,G. Roudier,Jose Alberto Rubino-Martin,Jose Alberto Rubino-Martin,B. Ruiz-Granados,B. Ruiz-Granados,L. Salvati,M. Sandri,M. Savelainen,M. Savelainen,M. Savelainen,Douglas Scott,E. P. S. Shellard,C. Sirignano,C. Sirignano,G. Sirri,Locke D. Spencer,R. A. Sunyaev,R. A. Sunyaev,A.-S. Suur-Uski,A.-S. Suur-Uski,J. A. Tauber,D. Tavagnacco,D. Tavagnacco,M. Tenti,L. Toffolatti,L. Toffolatti,M. Tomasi,M. Tomasi,Tiziana Trombetti,Luca Valenziano,J. Valiviita,J. Valiviita,B. Van Tent,L. Vibert,L. Vibert,P. Vielva,Fabrizio Villa,Nicola Vittorio,Benjamin D. Wandelt,Ingunn Kathrine Wehus,Martin White,Simon D. M. White,Andrea Zacchei,Andrea Zonca +232 more
TL;DR: In this article, the authors present cosmological parameter results from the full-mission Planck measurements of the cosmic microwave background (CMB) anisotropies, combining information from the temperature and polarization maps and the lensing reconstruction.
Journal ArticleDOI
Planck 2018 results. I. Overview and the cosmological legacy of Planck
Nabila Aghanim,Yashar Akrami,Yashar Akrami,Frederico Arroja,M. Ashdown,J. Aumont,Carlo Baccigalupi,Mario Ballardini,Mario Ballardini,A. J. Banday,A. J. Banday,R. B. Barreiro,Nicola Bartolo,Nicola Bartolo,Soumen Basak,Richard A. Battye,K. Benabed,J.-P. Bernard,J.-P. Bernard,Marco Bersanelli,Marco Bersanelli,P. Bielewicz,P. Bielewicz,P. Bielewicz,J. J. Bock,J. R. Bond,Julian Borrill,Julian Borrill,François R. Bouchet,F. Boulanger,F. Boulanger,F. Boulanger,M. Bucher,M. Bucher,Carlo Burigana,Carlo Burigana,R. C. Butler,Erminia Calabrese,Jean-François Cardoso,Julien Carron,B. Casaponsa,Anthony Challinor,H. C. Chiang,H. C. Chiang,L. P. L. Colombo,C. Combet,D. Contreras,B. P. Crill,F. Cuttaia,P. de Bernardis,G. de Zotti,G. de Zotti,Jacques Delabrouille,J.-M. Delouis,F.-X. Désert,E. Di Valentino,Clive Dickinson,Jose M. Diego,S. Donzelli,S. Donzelli,Olivier Doré,Marian Douspis,A. Ducout,X. Dupac,George Efstathiou,Franz Elsner,Torsten A. Enßlin,H. K. Eriksen,Edith Falgarone,Yabebal Fantaye,Yabebal Fantaye,James R. Fergusson,R. Fernandez-Cobos,Fabio Finelli,Francesco Forastieri,M. Frailis,E. Franceschi,Andrei V. Frolov,S. Galeotta,S. Galli,K. Ganga,Ricardo Genova-Santos,Ricardo Genova-Santos,Martina Gerbino,Tuhin Ghosh,Tuhin Ghosh,J. González-Nuevo,Krzysztof M. Gorski,Krzysztof M. Gorski,Serge Gratton,Alessandro Gruppuso,Jon E. Gudmundsson,Jon E. Gudmundsson,Jan Hamann,Will Handley,F. K. Hansen,George Helou,D. Herranz,S. R. Hildebrandt,E. Hivon,Zhiqi Huang,Andrew H. Jaffe,W. C. Jones,A. Karakci,E. Keihänen,Reijo Keskitalo,K. Kiiveri,K. Kiiveri,J. B. Kim,Theodore Kisner,Lloyd Knox,Nicoletta Krachmalnicoff,Martin Kunz,Martin Kunz,Martin Kunz,Hannu Kurki-Suonio,Hannu Kurki-Suonio,Guilaine Lagache,J.-M. Lamarre,Mathieu Langer,Anthony Lasenby,Massimiliano Lattanzi,Charles R. Lawrence,M. Le Jeune,J. P. Leahy,Julien Lesgourgues,François Levrier,Antony Lewis,Michele Liguori,Michele Liguori,P. B. Lilje,M. Lilley,V. Lindholm,V. Lindholm,M. López-Caniego,Philip Lubin,Yin-Zhe Ma,Yin-Zhe Ma,J. F. Macías-Pérez,Gianmarco Maggio,Davide Maino,Davide Maino,N. Mandolesi,N. Mandolesi,A. Mangilli,A. Marcos-Caballero,Michele Maris,Peter G. Martin,M. Martinelli,E. Martínez-González,Sabino Matarrese,Sabino Matarrese,N. Mauri,Jason D. McEwen,P. D. Meerburg,P. D. Meerburg,Peter Meinhold,Alessandro Melchiorri,A. Mennella,A. Mennella,M. Migliaccio,M. Migliaccio,Marius Millea,Marius Millea,Marius Millea,Subhasish Mitra,Subhasish Mitra,M.-A. Miville-Deschênes,M.-A. Miville-Deschênes,Diego Molinari,Diego Molinari,A. Moneti,L. Montier,L. Montier,Gianluca Morgante,Adam Moss,S. Mottet,Moritz Münchmeyer,Paolo Natoli,Paolo Natoli,Hans Ulrik Nørgaard-Nielsen,Carol Anne Oxborrow,L. Pagano,L. Pagano,D. Paoletti,Bruce Partridge,G. Patanchon,T. J. Pearson,Michael W. Peel,Michael W. Peel,Hiranya V. Peiris,Francesca Perrotta,Valeria Pettorino,F. Piacentini,L. Polastri,G. Polenta,J.-L. Puget,J.-L. Puget,Jörg P. Rachen,M. Reinecke,Mathieu Remazeilles,C. Renault,A. Renzi,Graca Rocha,C. Rosset,G. Roudier,G. Roudier,G. Roudier,Jose Alberto Rubino-Martin,Jose Alberto Rubino-Martin,B. Ruiz-Granados,B. Ruiz-Granados,L. Salvati,M. Sandri,M. Savelainen,M. Savelainen,M. Savelainen,Douglas Scott,E. P. S. Shellard,Maresuke Shiraishi,Maresuke Shiraishi,Chiara Sirignano,Chiara Sirignano,G. Sirri,Locke D. Spencer,R. A. Sunyaev,R. A. Sunyaev,A.-S. Suur-Uski,A.-S. Suur-Uski,J. A. Tauber,D. Tavagnacco,D. Tavagnacco,M. Tenti,Luca Terenzi,L. Toffolatti,L. Toffolatti,M. Tomasi,M. Tomasi,Tiziana Trombetti,J. Valiviita,J. Valiviita,B. Van Tent,L. Vibert,L. Vibert,P. Vielva,Fabrizio Villa,Nicola Vittorio,Benjamin D. Wandelt,Benjamin D. Wandelt,Ingunn Kathrine Wehus,Ingunn Kathrine Wehus,Martin White,Simon D. M. White,Andrea Zacchei,Andrea Zonca +254 more
TL;DR: In this paper, the authors present the cosmological legacy of the Planck satellite, which provides the strongest constraints on the parameters of the standard cosmology model and some of the tightest limits available on deviations from that model.
Journal ArticleDOI
H0LiCOW – XIII. A 2.4 per cent measurement of H0 from lensed quasars: 5.3σ tension between early- and late-Universe probes
Kenneth C. Wong,Sherry H. Suyu,Sherry H. Suyu,Sherry H. Suyu,Geoff C. F. Chen,Cristian E. Rusu,Cristian E. Rusu,M. Millon,Dominique Sluse,Vivien Bonvin,Christopher D. Fassnacht,Stefan Taubenberger,Matthew W. Auger,Simon Birrer,James H. H. Chan,Frederic Courbin,Stefan Hilbert,O. Tihhonova,Tommaso Treu,Adriano Agnello,Xuheng Ding,Inh Jee,Eiichiro Komatsu,Eiichiro Komatsu,Anowar J. Shajib,Alessandro Sonnenfeld,Roger Blandford,Léon V. E. Koopmans,Philip J. Marshall,Georges Meylan +29 more
TL;DR: In this paper, the authors present a measurement of the Hubble constant and other cosmological parameters from a joint analysis of six gravitationally lensed quasars with measured time delays.
Journal ArticleDOI
Tensions between the early and late Universe
TL;DR: A Kavli Institute for Theoretical Physics workshop in July 2019 directed attention to the Hubble constant discrepancy and proposed solutions focused on the pre-recombination era as mentioned in this paper.
Journal ArticleDOI
In the realm of the Hubble tension - a review of solutions
Eleonora Di Valentino,Olga Mena,Supriya Pan,Luca Visinelli,Weiqiang Yang,Alessandro Melchiorri,David F. Mota,Adam G. Riess,Adam G. Riess,Joseph Silk,Joseph Silk,Joseph Silk +11 more
TL;DR: In this paper, the authors present a thorough review of recent Hubble constant estimates and a summary of the proposed theoretical solutions, including early or dynamical dark energy, neutrino interactions, interacting cosmologies, primordial magnetic fields, and modified gravity.
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