Browsing by Author "Goodger, Joanna"

Now showing items 1-11 of 11

    • Chandra Reveals Twin X-ray Jets in the Powerful FR-II Radio Galaxy 3C 353 

      Kataoka, J.; Stawarz, L.; Harris, D.E.; Siemiginowska, A.; Ostrowski, M.; Swain, M.R.; Hardcastle, M.J.; Goodger, Joanna; Iwasawa, K.; Edwards, P.G. (2008)

    • Deep Chandra Observations of the Centaurus A Jet 

      Hardcastle, M.J.; Kraft, R.P.; Goodger, Joanna; Croston, J.H.; Sivakoff, G.R.; Jordan, A.; Evans, D.A. (Astronomical Society of the Pacific, 2008)
      Chandra has observed the jet of Centaurus A for 560 ks in 2007, giving a total on-source observation time since the launch of Chandra of 720 ks. Combining these datasets gives us a uniquely detailed X-ray view of the jet ...

    • Evidence for Non-Hydrostatic Gas Motions in the Hot Interstellar Medium of Centaurus A 

      Kraft, R.P.; Hardcastle, M.J.; Sivakoff, G.R.; Jordan, A.; Nulsen, P.E.J.; Birkinshaw, M.; Forman, W.R.; Jones, C.; Worrall, D.M.; Croston, J.H.; Evans, D.A.; Raychaudhury, S.; Murray, S.S.; Brassington, Nicola; Goodger, Joanna; Harris, W.E.; Juett, A.M.; Sarazin, C.L.; Woodley, K.A. (2008)
      We present preliminary results from a deep (600 ks) Chandra observation of the hot interstellar medium of the nearby early-type galaxy Centaurus A. We find a surface brightness discontinuity in the gas ~3.5 kpc from the ...

    • High-energy particle acceleration at the radio-lobe shock of Centaurus A 

      Croston, J.H.; Kraft, R.P.; Hardcastle, M.J.; Birkinshaw, M.; Worrall, D.M.; Nulsen, P.E.J.; Penna, R.F.; Sivakoff, G.R.; Jordan, R.; Brassington, Nicola; Evans, D.A.; Forman, W.R.; Gilfanov, M.; Goodger, Joanna; Harris, W.E.; Jones, C.; Juett, A.M.; Murray, S.S.; Raychaudhury, S.; Sarazin, C.L.; Voss, R.; Woodley, K.A. (2009)
      We present new results on the shock around the south-west radio lobe of Centaurus A using data from the Chandra Very Large Programme observations (740 ks total observing time). The X-ray spectrum of the emission around the ...

    • Inverse-Compton emission from the lobes of 3C 353 

      Goodger, Joanna; Hardcastle, M.J.; Croston, J.H.; Kassim, N.E.; Perley, R.A. (2008)
      X-ray emission due to inverse-Compton scattering of microwave background photons by electrons in the lobes of powerful radio galaxies has now been seen in a large number of objects. Combining an inverse-Compton model for ...

    • Inverse-Compton Emission from the Lobes of 3C353 

      Goodger, Joanna; Hardcastle, M.J.; Croston, J.H. (Astronomical Society of the Pacific, 2008)
      Analysis of the radio synchrotron and X-ray inverse-Compton emission from radio-loud active galaxies allows us to determine their particle ac- celeration processes and electron energy spectra. Previous studies have provided ...

    • Long-term monitoring of the dynamics and particle acceleration of knots in the jet of Centaurus A 

      Goodger, Joanna; Hardcastle, M.J.; Croston, J.H.; Kraft, R.P.; Birkinshaw, M.; Evans, D.A.; Jordan, A.; Nulsen, P.E.J.; Sivakoff, G.R.; Worrall, D.M.; Brassington, Nicola; Forman, W.R.; Gilfanov, M.; Jones, C.; Murray, S.S.; Raychaudhury, S.; Sarazin, C.L.; Voss, R.; Woodley, K.A. (2010)
      We present new and archival multi-frequency radio and X-ray data for Centaurus A obtained over almost 20 years at the Very Large Array and with Chandra, with which we measure the X-ray and radio spectral indices of jet ...

    • New results on particle acceleration in the Centaurus A jet and counterjet from a deep Chandra observation 

      Hardcastle, M.J.; Kraft, R.P.; Sivakoff, G.R.; Goodger, Joanna; Croston, J.H.; Jordan, A.; Evans, D.A.; Worrall, D.M.; Birkinshaw, M.; Raychaudhury, S.; Brassington, Nicola; Forman, W.R.; Harris, W.E.; Jones, C.; Juett, A.M.; Murray, S.S.; Nulsen, P.E.J.; Sarazin, C.L.; Woodley, K.A. (2007)
      We present new deep Chandra observations of the Centaurus A jet, with a combined on-source exposure time of 719 ks. These data allow detailed X-ray spectral measurements to be made along the jet out to its disappearance ...

    • Research Data Management Blog 

      Worthington, William; Goodger, Joanna (University of Hertfordshire, 2014)
      ~ 40 Blogs chronicling the JISCMRD projects at University of Hertfordshire. Project reports, outputs and discussion about: RDM Training; Data management Planning with DMPonline; Hybrid-cloud; Cost of Data Loss; Document ...

    • Research Data Management Microsite 

      Goodger, Joanna; Worthington, William (University of Hertfordshire, 2014)
      Over 100 pages and pdfs of guidance about Research Data Management, covering the full lifecycle of a research project. Including: planning; starting; working; finishing; governance; and training.

    • Research Data Management Training for the whole project lifecycle in Physics & Astronomy research Final Report 

      Goodger, Joanna; Worthington, William (University of Hertfordshire, 2014-06)
      Research Data Management Training for the whole project lifecycle in Physics & Astronomy was co-funded by the JISC Managing Research Data Programme 2011-2013 and the University of Hertfordshire. The project was carried out ...