International Journal of Astrophysics and Space Science

Volume 6, Issue 6, December 2018

  • Gravitational Collapse and Singularities in Some Non-Schwarzschild's Space-Times

    Chifu Ebenezer Ndikilar, Abu Ovansa Samson, Hafeez Yusuf Hafeez

    Issue: Volume 6, Issue 6, December 2018
    Pages: 93-100
    Received: 6 November 2018
    Accepted: 19 November 2018
    Published: 7 January 2019
    DOI: 10.11648/j.ijass.20180606.11
    Abstract: Singularities in three non-Schwarzschild space-times: Minkowski, Friedman-Lemaitre-Robertson-Walker and Reissner-Nordstromare investigated. Gravitational collapse in the Schwarzschild solution is obvious and widely studied. However, gravitational collapse should not be limited to Schwarzschild solution only as interesting findings exist in other me... Show More
  • On the Effects of Spin Properties on Timing Noise Parameters of Rotation-Powered Pulsars

    Evaristus Uzochukwu Iyida, Christian Ikechukwu Eze, Innocent Okwudili Eya, Augustine Ejikeme Chukwude

    Issue: Volume 6, Issue 6, December 2018
    Pages: 101-107
    Received: 3 November 2018
    Accepted: 22 November 2018
    Published: 13 January 2019
    DOI: 10.11648/j.ijass.20180606.12
    Abstract: Detailed investigation of improved timing observations has shown that the spin properties of a large population of rotation-powered pulsars on a varied range of timescales are strongly dominated by random fluctuations. Even though, there is no widely accepted way to characterize timing noise in these pulsars mainly due to the enormous complexity in ... Show More