Browsing by Author "Birkinshaw, Mark"

Now showing items 1-6 of 6

    • A 1D fluid model of the Centaurus A jet 

      Wykes, Sarka; Snios, Bradford T.; Nulsen, Paul E. J.; Kraft, Ralph P.; Birkinshaw, Mark; Hardcastle, Martin J.; Worrall, Diana M.; McDonald, Iain; Rejkuba, Marina; Jones, Thomas W.; Stark, David J.; Forman, William R.; Meyer, Eileen T.; Jones, Christine (2019-05-01)
      We implement a steady, one-dimensional flow model for the X-ray jet of Centaurus A in which entrainment of stellar mass loss is the primary cause of dissipation. Using over 260 ks of new and archival Chandra/ACIS data, we ...

    • Chandra X-ray Observations of the redshift 1.53, radio-loud quasar 3C 270.1 

      J. Wilkes, Belinda; V. Lal, Dharam; Worrall, D. M.; Birkinshaw, Mark; Haas, Martin; Willner, S. P.; Antonucci, Robert; Ashby, M. L. N.; Avara, Mark; Barthel, Peter; Chini, Rolf; Fazio, G.; Hardcastle, M.J.; Lawrence, Charles; Leipski, Christian; Ogle, Patrick; Schulz, Bernhard (2012-01-20)
      Chandra X-ray observations of the high redshift (z =1.532) radio-loud quasar 3C270.1 in 2008 February show the nucleus to have a power-law spectrum, Gamma = 1.66 +/- 0.08, typical of a radio-loud quasar, and a marginally-detected ...

    • A high-resolution view of the jets in 3C 465 

      Bempong-Manful, E.; Hardcastle, M. J.; Birkinshaw, Mark; Laing, R. A.; Leahy, J. P.; Worrall, D. M. (2020-05-28)
      We present new high-resolution and high-sensitivity studies of the jets in the WAT source 3C 465, using deep transverse-resolved radio observations from e-MERLIN, and with complementary observations from the VLA. We derive ...

    • Optical detection of the Pictor A jet and tidal tail : evidence against an IC/CMB jet 

      Gentry, Eric S.; Marshall, Herman L.; Hardcastle, M.J.; Perlman, Eric S.; Birkinshaw, Mark; Worrall, Diana M.; Lenc, Emil; Siemiginowska, Aneta; Urry, C. Megan (2015-07-20)
      New images of the FR II radio galaxy Pictor A from the Hubble Space Telescope reveal a previously undiscovered tidal tail, as well as a number of jet knots coinciding with a known X-ray and radio jet. The tidal tail is ...

    • Variability and Proper Motion of X-ray Knots in the Jet of Centaurus A 

      Snios, Bradford; Wykes, Sarka; Nulsen, Paul E. J.; Kraft, Ralph P.; Meyer, Eileen T.; Birkinshaw, Mark; Worrall, Diana M.; Hardcastle, Martin J.; Roediger, Elke; Forman, William R.; Jones, Christine (2019-02-05)
      We report results from Chandra observations analyzed for evidence of variability and proper motion in the X-ray jet of Centaurus A. Using data spanning 15 yr, collective proper motion of 11.3 ± 3.3 mas yr -1 , or 0.68 ± ...

    • The XXL Survey: : XXIX. GMRT 610 MHz continuum observations 

      Smolcic, Vernesa; Intema, Huib; Slaus, Bruno; Raychaudhury, Somak; Novak, Mladen; Horellou, Cathy; Chiappetti, Lucio; Delhaize, Jacinta; Birkinshaw, Mark; Bondi, Marco; Bremer, Malcolm; Ciliegi, Paolo; Ferrari, Chiara; Kolokythas, Konstantinos; Lidman, Chris; McGee, Sean L.; Norris, Ray; Pierre, Marguerite; Rottgering, Huub; Tasse, Cyril; Williams, Wendy (2018-12-01)
      We present the 25 square-degree GMRT-XXL-N 610 MHz radio continuum survey, conducted at 50 cm wavelength with the Giant Metrewave Radio Telescope (GMRT) towards the XXL Northern field (XXL-N). We combined previously published ...