New limits on cosmic strings from gravitational wave observation
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In this article, the authors combine new analysis of the stochastic gravitational wave background to be expected from cosmic strings with the latest pulsar timing array (PTA) limits to give an upper bound on the energy scale of the possible cosmic string network, G μ 1.5 × 10 − 11 at the 95% confidence level.About:
This article is published in Physics Letters B.The article was published on 2018-03-10 and is currently open access. It has received 170 citations till now. The article focuses on the topics: Gravitational wave background & Gravitational-wave observatory.read more
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Journal ArticleDOI
Cosmological Backgrounds of Gravitational Waves
TL;DR: In this article, the authors review early universe sources that can lead to cosmological backgrounds of GWs and discuss the basic characteristics of present and future GW detectors, including advanced LIGO, advanced Virgo, the Einstein telescope, KAGRA, and LISA.
Journal ArticleDOI
The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
Zaven Arzoumanian,Paul T. Baker,Harsha Blumer,B. Bécsy,Adam Brazier,Paul R. Brook,Sarah Burke-Spolaor,Shami Chatterjee,Siyuan Chen,James M. Cordes,Neil J. Cornish,Fronefield Crawford,H. Thankful Cromartie,Megan E. DeCesar,Paul Demorest,Timothy Dolch,Justin A. Ellis,Elizabeth C. Ferrara,William Fiore,Emmanuel Fonseca,Nathan Garver-Daniels,Peter A. Gentile,Deborah C. Good,Jeffrey S. Hazboun,A. Miguel Holgado,K. Islo,Ross J. Jennings,Megan L. Jones,Andrew R. Kaiser,David L. Kaplan,Luke Zoltan Kelley,Joey Shapiro Key,Nima Laal,Michael T. Lam,T. Joseph W. Lazio,Duncan R. Lorimer,Jing Luo,Ryan S. Lynch,Dustin R. Madison,Maura McLaughlin,Chiara M. F. Mingarelli,Cherry Ng,David J. Nice,Timothy T. Pennucci,Nihan Pol,Scott M. Ransom,Paul S. Ray,Brent J. Shapiro-Albert,Xavier Siemens,Joseph Simon,Renée Spiewak,Ingrid H. Stairs,Daniel R. Stinebring,Kevin Stovall,Jerry P. Sun,Joseph K. Swiggum,Stephen Taylor,J. E. Turner,Michele Vallisneri,Sarah J. Vigeland,Caitlin A. Witt +60 more
TL;DR: In this article, the authors search for an isotropic stochastic GWB in the 12.5-year pulsar timing data set collected by the North American Nanohertz Observatory for Gravitational Waves.
Journal ArticleDOI
The NANOGrav 12.5 yr Data Set: Search for an Isotropic Stochastic Gravitational-wave Background
Zaven Arzoumanian,Paul T. Baker,Harsha Blumer,B. Bécsy,Adam Brazier,Paul R. Brook,Sarah Burke-Spolaor,Sarah Burke-Spolaor,Shami Chatterjee,Siyuan Chen,Siyuan Chen,James M. Cordes,Neil J. Cornish,Fronefield Crawford,H. Thankful Cromartie,H. Thankful Cromartie,Megan E. DeCesar,Megan E. DeCesar,Paul Demorest,Timothy Dolch,Justin A. Ellis,Elizabeth C. Ferrara,William Fiore,Emmanuel Fonseca,Nathan Garver-Daniels,Peter A. Gentile,Deborah C. Good,Jeffrey S. Hazboun,A. Miguel Holgado,A. Miguel Holgado,K. Islo,Ross J. Jennings,Megan L. Jones,Andrew R. Kaiser,David L. Kaplan,Luke Zoltan Kelley,Joey Shapiro Key,Nima Laal,Michael T. Lam,T. Joseph W. Lazio,Duncan R. Lorimer,Jing Luo,Ryan S. Lynch,D. R. Madison,Maura McLaughlin,Chiara M. F. Mingarelli,Chiara M. F. Mingarelli,Cherry Ng,David J. Nice,Timothy T. Pennucci,Timothy T. Pennucci,Nihan Pol,Nihan Pol,Scott M. Ransom,Paul S. Ray,Brent J. Shapiro-Albert,Xavier Siemens,Xavier Siemens,Joseph Simon,Joseph Simon,Renée Spiewak,Ingrid H. Stairs,Daniel R. Stinebring,Kevin Stovall,Jerry P. Sun,Joseph K. Swiggum,Stephen Taylor,Jacob E. Turner,Michele Vallisneri,Sarah J. Vigeland,Caitlin A. Witt +70 more
TL;DR: In this article, the authors search for an isotropic stochastic GWB in the 12.5-yr pulsar-timing data set collected by the North American Nanohertz Observatory for Gravitational Waves.
Posted Content
Constraints on Primordial Black Holes
TL;DR: The constraints on the fraction of the Universe that may have gone into primordial black holes (PBHs) over the mass range 10−5 to 1050 g are updated and even if PBHs make a small contribution to the DM, they could play an important cosmological role and provide a unique probe of the early Universe.
Journal ArticleDOI
Primordial black holes as a dark matter candidate
TL;DR: The detection of gravitational waves from mergers of tens of Solar mass black hole binaries has led to a surge in interest in primordial black holes (PBHs) as a dark matter candidate as discussed by the authors.
References
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The Einstein Telescope: a third-generation gravitational wave observatory
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TL;DR: The third-generation ground-based observatory Einstein Telescope (ET) project as discussed by the authors is currently in its design study phase, and it can be seen as the first step in this direction.
Journal ArticleDOI
Hybrid Inflation
TL;DR: In this article, the authors describe a model where inflation ends in a different way, due to a very rapid rolling (waterfall) of a scalar field triggered by another one.
Journal ArticleDOI
False vacuum inflation with Einstein gravity
TL;DR: Investigation of chaotic inflation models with two scalar fields, such that one field (the inflaton) rolls while the other is trapped in a false vacuum state, finds that false vacuum inflation occurs with the inflaton field far below the Planck scale, making it easier to implement in the context of supergravity than standard chaotic inflation.
Laser Interferometer Space Antenna
Pau Amaro-Seoane,Heather Audley,Stanislav Babak,John M. Baker,Enrico Barausse,Peter L. Bender,Emanuele Berti,Pierre Binétruy,M. Born,Daniele Bortoluzzi,Jordan Camp,Chiara Caprini,Vitor Cardoso,Monica Colpi,John Conklin,Neil J. Cornish,Curt Cutler,Karsten Danzmann,Rita Dolesi,Luigi Ferraioli,Valerio Ferroni,Ewan Fitzsimons,Jonathan R. Gair,Lluis Gesa Bote,Domenico Giardini,Ferran Gibert,Catia Grimani,Hubert Halloin,Gerhard Heinzel,Thomas Hertog,Martin Hewitson,Kelly Holley-Bockelmann,Daniel Hollington,Mauro Hueller,Henri Inchauspe,Philippe Jetzer,N. Karnesis,Christian J. Killow,Antoine Klein,Bill Klipstein,N. Korsakova,Shane L. Larson,Jeffrey Livas,Ivan Lloro,Nary Man,Davor Mance,J. Martino,Ignacio Mateos,Kirk McKenzie,Sean T. McWilliams,Cole Miller,Guido Mueller,Germano Nardini,Gijs Nelemans,Miquel Nofrarías,Antoine Petiteau,P. Pivato,Eric Plagnol,Ed Porter,J. Reiche,David J. Robertson,N. A. Robertson,Elena M. Rossi,G. Russano,Bernard F. Schutz,Alberto Sesana,David H. Shoemaker,Jacob Slutsky,Carlos F. Sopuerta,T. J. Sumner,Nicola Tamanini,Ira Thorpe,Michael Troebs,Michele Vallisneri,Alberto Vecchio,Daniele Vetrugno,Stefano Vitale,Marta Volonteri,Gudrun Wanner,H. Ward,Peter Wass,W. J. Weber,John Ziemer,Peter Zweifel +83 more
TL;DR: The LISA Consortium as mentioned in this paper proposed a 4-year mission in response to ESA's call for missions for L3, which is an all-sky monitor and will offer a wide view of a dynamic cosmos using Gravitational Waves as new and unique messengers to unveil The Gravitational Universe.