Archive:: International Journal of Astrophysics and Space Science:: Science Publishing Group

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

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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

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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

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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

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