Browsing by Author "Johnston, S"

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    • Spica and the Annual Cycle of PKS B1322-110 Scintillations

      Bignall, H; Reynolds, C; Stevens, J; Bannister, K; Johnston, S; Tuntsov, AV; Walker, MA; Gulyaev, S; Natusch, T; Weston, S; Md Said, NM; Kratzer, M (Oxford University Press (OUP), 2019)
      PKS B1322–110 is a radio quasar that is located only 8.′5 in angular separation from the bright B star Spica. It exhibits intraday variability in its flux density at GHz frequencies attributed to scintillations from plasma ...

    • The Thousand-Pulsar-Array Programme on MeerKAT IV: Polarization Properties of Young, Energetic Pulsars

      Serylak, M; Johnston, S; Kramer, M; Buchner, S; Karastergiou, A; Keith, MJ; Parthasarathy, A; Weltevrede, P; Bailes, M; Barr, ED; Camilo, F; Geyer, M; Hugo, BV; Jameson, A; Reardon, DJ; Shannon, RM; Spiewak, R; van Straten, W; Venkatraman Krishnan, V (Oxford University Press (OUP), 2021)
      We present observations of 35 high spin-down energy radio pulsars using the MeerKAT telescope. Polarization profiles and associated parameters are also presented. We derive the geometry for a selection of pulsars which ...

    • The Thousand-Pulsar-Array Programme on MeerKAT – II. Observing Strategy for Pulsar Monitoring With Subarrays

      Song, X; Weltevrede, P; Keith, MJ; Johnston, S; Karastergiou, A; Bailes, M; Barr, ED; Buchner, S; Geyer, M; Hugo, BV; Jameson, A; Parthasarathy, A; Reardon, DJ; Serylak, M; Shannon, RM; Spiewak, R; van Straten, W; Venkatraman Krishnan, V (Oxford University Press (OUP), 2021)
      The Thousand-Pulsar-Array (TPA) programme currently monitors about 500 pulsars with the sensitive MeerKAT radio telescope by using subarrays to observe multiple sources simultaneously. Here we define the adopted observing ...