Now showing items 1-5 of 5

    • Cosmic ray flux at the earth in a variable heliosphere 

      Scherer, K.; Ferreira, S.E.S.; Potgieter, M.S.; Fichtner, H.; Heber, B. (Elsevier, 2008)
      In recent years the variability of the cosmic ray flux has become one of the main issues not only for the interpretation of the abundances of cosmogenic isotopes in cosmochronic archives like, e.g., ice cores, but also for ...
    • A heatwave of accretion energy traced by masers in the G358-MM1 high-mass protostar 

      Burns, R.A.; Chibueze, J.O.; Sugiyama, K.; Hirota, T.; Kim, K.T. (Nature, 2020)
      High-mass stars are thought to accumulate much of their mass via short, infrequent bursts of disk-aided accretion1,2. Such accretion events are rare and difficult to observe directly but are known to drive enhanced maser ...
    • Numerical modelling of Astrospheres 

      Light, J. (North-West University (South Africa)North-West University, 2020)
      A stellar wind creates a cavity in the interstellar medium, which is known as an astrophere. In this work, radiative cooling is included in a standard 2D magneto-hydrodynamic numerical model to simulate the evolution of ...
    • The numerical simulation of astrospheric evolution in different interstellar environments 

      Marais, Andrea (North-West University (South Africa), 2023)
      The interaction between the interstellar medium (ISM) and a stellar wind leads to the formation of an astrosphere. In this study, the evolution of astrospheres is simulated with a two-dimensional spherical hydrodynamic ...
    • Voyager 2 enters interstellar space 

      Strauss, R. Du Toit (Springer Nature, 2019)
      After 41 years of travel, the Voyager 2 spacecraft joins its twin in interstellar space. A suite of papers report Voyager 2’s experience of its transition through the heliosheath and heliopause to what lies beyond