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The International Pulsar Timing Array: First data release

J. P. W. Verbiest 1 L. Lentati 2 G Hobbs 3 R van Haasteren 4 P. B. Demorest 5 G.H Janssen 6 J.-B Wang 7 G Desvignes 1 R. N. Caballero 1 M.J. Keith 8 D.J. Champion 1 Z. Arzoumanian 9 S Babak 10 C G Bassa 6 N.D.R. Bhat 11 A. Brazier 12 P Brem 10 M. Burgay 13 S. Burke-Spolaor 14 S J Chamberlin 15 S. Chatterjee 16 B. Christy 17 Ismaël Cognard 18, 19 J. M. Cordes 20 S. Dai 3 T. Dolch 21 J.A. Ellis 4 R. D. Ferdman 19 E. Fonseca 22 J.R. Gair 23 P. Gentile 24 N.E. Garver-Daniels 24 M.E. Gonzales 25 E. Graikou 1 Lucas Guillemot 18, 19 J. W. T. Hessels 6 G Jones 26 R Karuppusamy 1 M Kerr 3 M Kramer 1, 8 T. Lam 1 A. Lasky 27 A Lassus 1 P Lazarus 1 T. J. W. Lazio 4 K.J. Lee 28 L Levin 8 K Liu 1 R.S. Lynch 29 A.G. Lyne 8 J Mckee 8 M.A. Mclaughlin 24 S T Mcwilliams 24 D. R. Madison 29 R. N. Manchester 30 C.M.F. Mingarelli 31 D.J. Nice 32 S Osłowski 1 N.T. Palliyaguru 33 T.T. Pennucci 34 B. B. P. Perera 8 D Perrodin 13 A Possenti 13 A Petiteau 35 S.M. Ransom 29 D Reardon 3 P. A. Rosado 36 S. A. Sanidas 37 A Sesana 10 G Shaifullah 1 R.M. Shannon 30 X Siemens 38 J. Simon 39 R Smits 40 R Spiewak 38 I.H. Stair 41 B.W. Stappers 8 D.R. Stinebring 42 K Stovall 43 J.J. Swiggum 24 S.R. Taylor 4 Gilles Theureau 18, 19 C Tiburzi 13 L Toomey 3 M Vallisneri 4 W van Straten 36 A Vecchio 44 Y. Wang 45 L Wen 46 X.P. You 47 W.W. Zhu 1 X.-J Zhu 46
35 APC-Gravitation - APC - Gravitation
APC (UMR_7164) - AstroParticule et Cosmologie, AEI - Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut )
Abstract : The highly stable spin of neutron stars can be exploited for a variety of (astro)physical investigations. In particular, arrays of pulsars with rotational periods of the order of milliseconds can be used to detect correlated signals such as those caused by gravitational waves. Three such 'pulsar timing arrays' (PTAs) have been set up around the world over the past decades and collectively form the 'International' PTA (IPTA). In this paper, we describe the first joint analysis of the data from the three regional PTAs, i.e. of the first IPTA data set. We describe the available PTA data, the approach presently followed for its combination and suggest improvements for future PTA research. Particular attention is paid to subtle details (such as underestimation of measurement uncertainty and long-period noise) that have often been ignored but which become important in this unprecedentedly large and inhomogeneous data set. We identify and describe in detail several factors that complicate IPTA research and provide recommendations for future pulsar timing efforts. The first IPTA data release presented here (and available on-line) is used to demonstrate the IPTA's potential of improving upon gravitational-wave limits
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J. P. W. Verbiest, L. Lentati, G Hobbs, R van Haasteren, P. B. Demorest, et al.. The International Pulsar Timing Array: First data release. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2016, 458 (2), pp.1267-1288. ⟨10.1093/mnras/stw347⟩. ⟨insu-01329806⟩

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