KMS of Xinjiang Astronomical Observatory, CAS
| European Pulsar Timing Array limits on an isotropic stochastic gravitational-wave background | |
| Lentati, L.1; Taylor, S. R.2,3; Mingarelli, C. M. F.4,5,6; Sesana, A.6,7; Sanidas, S. A.8,9; Vecchio, A.6; Caballero, R. N.5; Lee, K. J.5,10; van Haasteren, R.3; Babak, S.7; Bassa, C. G.9,11; Brem, P.7; Burgay, M.12; Champion, D. J.5; Cognard, I.13,14; Desvignes, G.5; Gair, J. R.2; Guillemot, L.13,14; Hessels, J. W. T.8,11; Janssen, G. H.9,11; Karuppusamy, R.5; Kramer, M.5,9; Lassus, A.5,15; Lazarus, P.5; Liu, K.5; Oslowski, S.5,16; Perrodin, D.12; Petiteau, A.15; Possenti, A.12; Purver, M. B.9; Rosado, P. A.17,18; Smits, R.11; Stappers, B.9; Theureau, G.13,14,19; Tiburzi, C.12,20; Verbiest, J. P. W.5,16; Lentati, L | |
| 2015-11-01 | |
| Source Publication | Monthly Notices of the Royal Astronomical Society
 |
| ISSN | 0035-8711 |
| Volume | 453Issue:3Pages:2576-2598 |
| Abstract | We present new limits on an isotropic stochastic gravitational-wave background (GWB) using a six pulsar data set spanning 18 yr of observations from the 2015 European Pulsar Timing Array data release. Performing a Bayesian analysis, we fit simultaneously for the intrinsic noise parameters for each pulsar, along with common correlated signals including clock, and Solar system ephemeris errors, obtaining a robust 95 per cent upper limit on the dimensionless strain amplitude A of the background of A < 3.0 x 10(-15) at a reference frequency of 1 yr(-1) and a spectral index of 13/3, corresponding to a background from inspiralling supermassive black hole binaries, constraining the GW energy density to Omega(gw)(f)h(2) < 1.1 x 10(-9) at 2.8 nHz. We also present limits on the correlated power spectrum at a series of discrete frequencies, and show that our sensitivity to a fiducial isotropic GWB is highest at a frequency of similar to 5 x 10(-9) Hz. Finally, we discuss the implications of our analysis for the astrophysics of supermassive black hole binaries, and present 95 per cent upper limits on the string tension, G mu/c(2), characterizing a background produced by a cosmic string network for a set of possible scenarios, and for a stochastic relic GWB. For a Nambu-Goto field theory cosmic string network, we set a limit G mu/c(2) < 1.3x10(-7), identical to that set by the Planck Collaboration, when combining Planck and high-l cosmic microwave background data from other experiments. For a stochastic relic background, we set a limit of Omega(relic)(gw)(f)h(2) < 1.2 x 10(-9), a factor of 9 improvement over the most stringent limits previously set by a pulsar timing array. |
| Correspondent Email | ltl21@cam.ac.uk |
| Keyword | Gravitational Waves Methods: Data Analysis Pulsars: General |
| Subtype | Article |
| DOI | 10.1093/mnras/stv1538 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | black-hole binaries ; millisecond pulsars ; cosmic strings ; hierarchical-models ; infinite strings ; galaxy formation ; brane ; inflation ; radiation ; precision ; evolution |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000363649000031 |
| Project Number | PHY-0960291 ; 11373011 ; PF3-140116 ; 337062 ; 610058 |
| Funding Organization | European Research Council to implement the Large European Array for Pulsars (LEAP) ; 'Programme National de Cosmologie and Galaxies' (PNCG) of CNRS/INSU, France ; STFC in the UK ; Netherlands Foundation for Scientific Research NWO ; Higher Education Funding Council for England ; Science and Technology Facilities Council ; NSF under MRI-R2 award ; Sherman Fairchild Foundation ; Junior Research Fellowship at Trinity Hall College, Cambridge University ; NASA Postdoctoral Program at the Jet Propulsion Laboratory ; NASA ; Marie Curie International Outgoing Fellowship within the 7th European Community Framework Programme ; Royal Society ; NWO Vidi fellowship (PI JWTH) ; International Max Planck Research School Bonn/Cologne and the Bonn-Cologne Graduate School ; National Natural Science Foundation of China ; NASA Einstein Fellowship ; NWO Vidi fellowship ; ERC Starting Grant 'DRAG-NET' ; International Max Planck Research School Bonn/Cologne ; European Research Council for the ERC Synergy Grant BlackHoleCam ; Alexander von Humboldt Foundation |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/1604 |
| Collection | 110米口径全可动射电望远镜（QTT）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题1：大样本射电天体的观测和前沿问题研究 |
| Corresponding Author | Lentati, L |
| Affiliation | 1.Astrophysics Group, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, UK 2.Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK 3.Jet Propulsion Laboratory, California Institute of Technology, Pasadena,CA 91109, USA 4.TAPIR (Theoretical Astrophysics), California Institute of Technology,Pasadena, CA 91125, USA 5.Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69, D-53121 Bonn, Germany 6.School of Physics and Astronomy, University of Birmingham, Edgbaston,Birmingham B15 2TT, UK 7.Max-Planck-Institut fur Gravitationsphysik, Albert Einstein Institut, Am Muhlenberg 1, D-14476 Golm, Germany 8.Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, the Netherlands 9.Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL, UK 10.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, P. R. China 11.ASTRON, The Netherlands Institute for Radio Astronomy, Postbus 2, NL-7990 AA, Dwingeloo, the Netherlands 12.INAF –Osservatorio Astronomico di Cagliari, via della Scienza 5, I-09047 Selargius, Italy 13.Laboratoire de Physique et Chimie de l’Environnement et de l’Espace LPC2E CNRS-Universit´e d’Orl´eans, F-45071 Orl´eans, France 14.Station de radioastronomie de Nanc¸ay, Observatoire de Paris, CNRS/INSU F-18330 Nanc¸ay, France 15.Universit´e Paris-Diderot-Paris7 APC – UFR de Physique, Batiment Condorcet, 10 rue Alice Domont et L´eonie Duquet, F-75205 Paris Cedex 13, France 16.Fakultat fur Physik, Universitat Bielefeld, Postfach 100131, D-33501 Bielefeld, Germany 17.Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn VIC A-3122, Australia 18.Max Planck Institute for Gravitational Physics, Albert Einstein Institute, Callinstraße 38, D-30167 Hanover, Germany 19.Laboratoire Univers et Th´eories LUTh, Observatoire de Paris, CNRS/INSU, Universit Paris Diderot, 5 place Jules Janssen, F-92190 Meudon, France 20.Dipartimento di Fisica – Universit´a di Cagliari, Cittadella Universitaria, I-09042 Monserrato, Italy |
| Recommended Citation GB/T 7714 | Lentati, L.,Taylor, S. R.,Mingarelli, C. M. F.,et al. European Pulsar Timing Array limits on an isotropic stochastic gravitational-wave background[J]. Monthly Notices of the Royal Astronomical Society,2015,453(3):2576-2598. |
| APA | Lentati, L..,Taylor, S. R..,Mingarelli, C. M. F..,Sesana, A..,Sanidas, S. A..,...&Lentati, L.(2015).European Pulsar Timing Array limits on an isotropic stochastic gravitational-wave background.Monthly Notices of the Royal Astronomical Society,453(3),2576-2598. |
| MLA | Lentati, L.,et al."European Pulsar Timing Array limits on an isotropic stochastic gravitational-wave background".Monthly Notices of the Royal Astronomical Society 453.3(2015):2576-2598. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| stv1538.pdf（1588KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment