Browsing by Author "Westcott, J."

Now showing items 1-4 of 4

    • The curious activity in the nucleus of NGC 4151 : jet interaction causing variability? 

      Williams, D. R. A.; Baldi, R. D.; McHardy, I. M.; Beswick, R. J.; Panessa, F.; May, D.; Moldón, J.; Argo, M. K.; Bruni, G.; Dullo, B. T.; Knapen, J. H.; Brinks, E.; Fenech, D. M.; Mundell, C. G.; Muxlow, T. W. B.; Pahari, M.; Westcott, J. (2020-05-04)
      A key characteristic of many active galactic nuclei (AGNs) is their variability, but its origin is poorly understood, especially in the radio domain. Williams et al. (2017) reported a ∼50 per cent increase in peak flux ...

    • Exploring the making of a galactic wind in the star-bursting dwarf irregular galaxy IC 10 with LOFAR 

      Heesen, V.; Rafferty, D. A.; Horneffer, A.; Beck, R.; Basu, A.; Westcott, J.; Hindson, L.; Brinks, E.; Chyży, K. T.; Scaife, A. M. M.; Brüggen, M.; Heald, George; Fletcher, A.; Horellou, C.; Tabatabaei, F. S.; Paladino, R.; Nikiel-Wroczyński, B.; Hoeft, M.; Dettmar, R. -J. (2018-05-11)
      Low-mass galaxies are subject to strong galactic outflows, in which cosmic rays may play an important role; they can be best traced with low-frequency radio continuum observations, which are less affected by spectral ageing. ...

    • LeMMINGs – I. The eMERLIN legacy survey of nearby galaxies. 1.5-GHz parsec-scale radio structures and cores 

      Baldi, R. D.; Williams, D.R.A.; McHardy, I.M.; Beswick, R.J.; Argo, M. K.; Dullo, B. T.; Knapen, J. H.; Brinks, Elias; Muxlow, T. W. B.; Aalto, S.; Alberdi, A.; Bendo, G. J.; Corbel, S.; Evans, R.; Fenech, D.M.; Green, D. A.; Klöckner, H. R; Körding, E.; Kharb, P.; Maccarone, T. J.; Martí-Vidal, I.; Mundell, C. G.; Panessa, F.; Peck, A. B.; Pérez-Torres, M. A.; Saikia, D. J.; Shankar, F.; Spencer, R. E.; Stevens, I. R.; Uttley, P.; Westcott, J. (2018-05-21)
      We present the first data release of high-resolution (≤0.2 arcsec) 1.5-GHz radio images of 103 nearby galaxies from the Palomar sample, observed with the eMERLIN array, as part of the LeMMINGs survey. This sample includes ...

    • Radio jets in NGC 4151 where eMERLIN meets HST 

      Williams, D. R. A.; McHardy, I. M.; Baldi, R. D.; Beswick, R. J.; Argo, M. K.; Dullo, B. T.; Knapen, J. H.; Brinks, E.; Fenech, D. M.; Mundell, C.G.; Muxlow, T.W.B.; Panessa, F.; Rampadarath, H.; Westcott, J. (2017-12-21)
      We present high-sensitivity eMERLIN radio images of the Seyfert galaxy NGC 4151 at 1.5 GHz. We compare the new eMERLIN images to those from archival MERLIN observations in 1993 to determine the change in jet morphology in ...