Now showing items 1-4 of 4

    • First Hard X-ray Observation of a Compact Symmetric Object : A Broadband X-ray Study of a radio galaxy OQ+208 with NuSTAR and Chandra 

      Sobolewska, Malgosia; Siemiginowska, Aneta; Guainazzi, Matteo; Hardcastle, Martin; Migliori, Giulia; Ostorero, Luisa; Stawarz, Lukasz (2019-10-22)
      Compact Symmetric Objects (CSOs) have been observed with Chandra and XMM-Newton to gain insights into the initial stages of a radio source evolution and probe the black hole activity at the time of relativistic outflow ...
    • The Impact of the Environment on the Early Stages of Radio Source Evolution 

      Sobolewska, Malgosia; Siemiginowska, Aneta; Guainazzi, Matteo; Hardcastle, Martin; Migliori, Giulia; Ostorero, Luisa; Stawarz, Lukasz (2019-01-23)
      Compact Symmetric Objects (CSOs) show radio features such as jets, lobes, hot spots that are contained within the central 1 kpc region of their host galaxy. Thus, they are thought to be among the progenitors of large-scale ...
    • The Origin of High-energy Emission in the Young Radio Source PKS 1718–649 

      Sobolewska, Małgosia; Migliori, Giulia; Ostorero, Luisa; Siemiginowska, Aneta; Stawarz, Łukasz; Guainazzi, Matteo; Hardcastle, Martin J. (2022-12-12)
      We present a model for the broadband radio-to-γ-ray spectral energy distribution of the compact radio source PKS 1718 − 649. Because of its young age (≃100 yr) and proximity (z = 0.014), PKS 1718 − 649 offers a unique ...
    • X-ray properties of the Youngest Radio Sources and their Environments 

      Siemiginowska, Aneta; Sobolewska, Malgosia; Migliori, Giulia; Guainazzi, Matteo; Hardcastle, M.J.; Ostorero, Luisa; Stawarz, Lukasz (2016-05-23)
      We present the first results from our X-ray study of young radio sources classified as compact symmetric objects (CSOs). Using the Chandra X-ray Observatory we observed six CSOs for the first time in X-rays, and re-observed ...