Bell, M. E.M. E.BellMurphy, TaraTaraMurphyJohnston, S.S.JohnstonKaplan, D. L.D. L.KaplanCroft, S.S.CroftHancock, P.P.HancockCallingham, J. R.J. R.CallinghamZic, A.A.ZicDobie, D.D.DobieSwiggum, J. K.J. K.SwiggumRowlinson, A.A.RowlinsonHurley-Walker, N.N.Hurley-WalkerOffringa, A. R.A. R.OffringaBERNARDI, GIANNIGIANNIBERNARDIBowman, J. D.J. D.BowmanBriggs, F.F.BriggsCappallo, R. J.R. J.CappalloDeshpande, A. A.A. A.DeshpandeGaensler, B. M.B. M.GaenslerGreenhill, L. J.L. J.GreenhillHazelton, B. J.B. J.HazeltonJohnston-Hollitt, M.M.Johnston-HollittLonsdale, C. J.C. J.LonsdaleMcWhirter, S. R.S. R.McWhirterMitchell, D. A.D. A.MitchellMorales, M. F.M. F.MoralesMorgan, E.E.MorganOberoi, D.D.OberoiOrd, S. M.S. M.OrdPrabu, T.T.PrabuShankar, N. UdayaN. UdayaShankarSrivani, K. S.K. S.SrivaniSubrahmanyan, R.R.SubrahmanyanTingay, S. J.S. J.TingayWayth, R. B.R. B.WaythWebster, R. L.R. L.WebsterWilliams, A.A.WilliamsWilliams, C. L.C. L.Williams2020-06-292020-06-2920160035-8711http://hdl.handle.net/20.500.12386/26265We present 154 MHz Murchison Widefield Array imaging observations and variability information for a sample of pulsars. Over the declination range -80° < δ < 10°, we detect 17 known pulsars with mean flux density greater than 0.3 Jy. We explore the variability properties of this sample on time-scales of minutes to years. For three of these pulsars, PSR J0953+0755, PSR J0437-4715, and PSR J0630-2834, we observe interstellar scintillation and variability on time-scales of greater than 2 min. One further pulsar, PSR J0034-0721, showed significant variability, the physical origins of which are difficult to determine. The dynamic spectra for PSR J0953+0755 and PSR J0437-4715 show discrete time and frequency structure consistent with diffractive interstellar scintillation and we present the scintillation bandwidth and time-scales from these observations. The remaining pulsars within our sample were statistically non-variable. We also explore the spectral properties of this sample and find spectral curvature in pulsars PSR J0835-4510, PSR J1752-2806, and PSR J0437-4715.STAMPAenArticle10.1093/mnras/stw12932-s2.0-84988884768000383272500067https://academic.oup.com/mnras/article/461/1/908/25952682016MNRAS.461..908BFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems