proceeding

MeerTime - the MeerKAT Key Science Program on Pulsar Timing

M. BailesLaboratoire de Physique et Chimie de l'Environnement et de l'Espace LPC2E CNRS-Université d'Orléans, F-45071 Orléans, FranceE D BarrMax-Planck-Institut für Radioastronomie Auf dem Hügel 69 , D-53121 Bonn , GermanyN. D. R. BhatInternational Centre for Radio Astronomy Research , Curtin University Bentley , WA 6102 , AustraliaJeanandrew BrinkIndependent African P.O. Box 17633, Bainsvlei, South Africa, 9338S. BuchnerCSIRO Astronomy and Space Science PO BOX 76 , NSW 1710 , Australia M. BurgayINAF -Osservatorio Astronomico di Cagliari via della Scienza 5 , 09047 Selargius ( CA) , ItalyF. CamiloSquare Kilometer Array South Africa, The Park, Park Road, Pinelands, Cape Town 7405D. J. ChampionMax-Planck-Institut für Radioastronomie Auf dem Hügel 69 , D-53121 Bonn , GermanyJ. W. T. HesselsASTRON , the Netherlands Institute for Radio Astronomy , Postbus 2 , 7990 AA , Dwingeloo , The NetherlandsA. JamesonOzGrav, Centre for Astrophysics and Supercomputing, Swinburne University of Technology, H11 PO Box 218 Hawthorn, Vic, 3122, AustraliaS. JohnstonCSIRO Astronomy and Space Science PO BOX 76 , NSW 1710 , Australia A. KarastergiouAstrophysics , University of Oxford , Denys Wilkinson Building , Keble Road , Oxford OX1 3RH , UKR. KaruppusamyMax-Planck-Institut für Radioastronomie Auf dem Hügel 69 , D-53121 Bonn , GermanyVicky KaspiMcGill University , 3600 University St. , Montreal , QC H3A 2T8 , CanadaM. J. KeithJodrell Bank Centre for Astrophysics , School of Physics , Astronomy , University of Manchester Alan Turing Building , Oxford Road , Manchester , M13 9PL , UKM. KrämerMax-Planck-Institut für Radioastronomie Auf dem Hügel 69 , D-53121 Bonn , GermanyMaura McLaughlinWVU , Center for Gravitational Waves and Cosmology , Chestnut Ridge Research Building , Morgantown , WV 26506Kavilan MoodleyAstrophysics and Cosmology Research Unit , School of Mathematics , Statistics and Computer Science , University of KwaZulu-Natal , Durban , 4041 , South Africa oS. OsłowskiOzGrav , Centre for Astrophysics and Supercomputing , Swinburne University of Technology , H11 PO Box 218 Hawthorn , Vic , 3122 , AustraliaAndrea PossentiINAF -Osservatorio Astronomico di Cagliari via della Scienza 5 , 09047 Selargius ( CA) , ItalyS. M. RansomCSIRO Astronomy and Space Science PO BOX 76 , NSW 1710 , Australia Frederic A. RasioCIERA, Northwestern University, Evanston, IL, USAJonathan SieversAstrophysics , Cosmology Research Unit, School of Mathematics, Statistics , Computer Science, University of KwaZulu-Natal, Durban, 4041, South AfricaMarcin SerylakSquare Kilometer Array South Africa, The Park, Park Road, Pinelands, Cape Town 7405B. W. StappersJodrell Bank Centre for Astrophysics , School of Physics , Astronomy , University of Manchester Alan Turing Building , Oxford Road , Manchester , M13 9PL , UKI. H. StairsDept. of Physics , Astronomy , University of British Columbia , 6224 Agricultural Road , Vancouver , BC V6T 1Z1 CanadaG. TheureauLUTH (UMR_8102) - Laboratoire Univers et Théories (5 place Jules Janssen 92195 Meudon cedex - France)J. van LeeuwenP. WeltevredeJodrell Bank Centre for Astrophysics, School of Physics , Astronomy, University of Manchester Alan Turing Building, Oxford Road, Manchester, M13 9PL, UKNorbert WexMax-Planck-Institut für Radioastronomie Auf dem Hügel 69, D-53121 Bonn, Germany

2018en

ABI

Аннотация

The MeerKAT telescope represents an outstanding opportunity for radio pulsar timing science with its unique combination of a large collecting area and aperture efficiency (effective area $\sim$7500 m$^2$), system temperature ($T<20$K), high slew speeds (1-2 deg/s), large bandwidths (770 MHz at 20cm wavelengths), southern hemisphere location (latitude $\sim -30^\circ$) and ability to form up to four sub-arrays. The MeerTime project is a five-year program on the MeerKAT array by an international consortium that will regularly time over 1000 radio pulsars to perform tests of relativistic gravity, search for the gravitational wave signature induced by supermassive black hole binaries in the timing residuals of millisecond pulsars, explore the interiors of neutron stars through a pulsar glitch monitoring programme, explore the origin and evolution of binary pulsars, monitor the swarms of pulsars that inhabit globular clusters and monitor radio magnetars. MeerTime will complement the TRAPUM project and time pulsars TRAPUM discovers in surveys of the galactic plane, globular clusters and the galactic centre. In addition to these primary programmes, over 1000 pulsars will have their arrival times monitored and the data made immediately public. The MeerTime pulsar backend comprises two server-class machines each of which possess four Graphics Processing Units. Up to four pulsars can be coherently dedispersed simultaneously up to dispersion measures of over 1000 pc cm$^{-3}$. All data will be provided in psrfits format. The MeerTime backend will be capable of producing coherently dedispersed filterbank data for timing multiple pulsars in the cores of globular clusters that is useful for pulsar searches of tied array beams. The first real-time pulsar profiles have been obtained as part of the MeerKAT commissioning process, and useful scientific data will start to come online through 2017. All MeerTime data will ultimately be made available for public use, and any published results will include the arrival times and profiles used in the results.

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DOI: 10.22323/1.277.0011

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