American Journal of Astronomy and Astrophysics

Volume 8, Issue 1, March 2020

  • Annual Mean and Correlation of Global Vertical Total Electron Content from Various Global Data Centers

    Shambel Gizachew, Belay Sitotaw, Gizaw Mengistu

    Issue: Volume 8, Issue 1, March 2020
    Pages: 1-7
    Received: 21 November 2019
    Accepted: 31 December 2019
    Published: 21 January 2020
    Abstract: The main purpose of this work is to evaluate the annual mean correlations of vertical total electron content provided by GPS, Center for Orbit Determination in Europe (CODE), Jet Propulsion Laboratory (JPL), Polytechnical University of Catalonia (UPC) and European Space Agency (ESA) data centers. The comparisons are aimed at comparability of the di... Show More
  • Modeling Jupiter with a Multi-layer Spheroidal Liquid Mass Rotating Differentially

    Joel Uriel Cisneros-Parra, Francisco Javier Martinez-Herrera, Daniel Montalvo-Castro

    Issue: Volume 8, Issue 1, March 2020
    Pages: 8-14
    Received: 18 December 2019
    Accepted: 3 January 2020
    Published: 12 February 2020
    Abstract: With the aim of improving the Jupiter equilibrium liquid model consisting of two distorted spheroids (“spheroidals”) of our last paper, we generalize it here to any number l of layers, demanding that the calculated gravitational moments, J2n (n=1,.., 4), agree with those surveyed by the Juno mission, which is fulfilled with a much higher accuracy t... Show More