American Journal of Astronomy and Astrophysics

Archive

Volume 12, Issue 1, March 2025

  • Research Article

    Equilibrium Positions in a Gravitational Field Generated by an Elongated Asteroid with Density of Order 4

    El Haj El Ourabi*, Mohammed Bennai

    Issue: Volume 12, Issue 1, March 2025
    Pages: 1-8
    Received: 26 November 2024
    Accepted: 10 December 2024
    Published: 7 January 2025
    DOI: 10.11648/j.ajaa.20251201.11
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    Abstract: Calculating the gravitational potential generated by non-spherical mass distributions is an old problem that has been tackled by astronomical researchers. The majority of small celestial objects have an elongated shape with a non-uniform mass distribution. Early work in this field modelled these elongated bodies as segments with a uniform mass dist... Show More
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  • Research Article

    Description of Lorentz Transformations, the Doppler Effect, Hubble's Law, and Related Phenomena in Curvilinear Coordinates by Generalized Biquaternions

    Alimzhan Kholmuratovich Babaev*

    Issue: Volume 12, Issue 1, March 2025
    Pages: 9-20
    Received: 11 December 2024
    Accepted: 27 December 2024
    Published: 22 January 2025
    DOI: 10.11648/j.ajaa.20251201.12
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    Abstract: This paper presents the derivation of Lorentz transformations in curvilinear coordinates utilizing generalized biquaternions. Generalized biquaternions are rotations in curvilinear coordinates, including on the tx, ty, and tz planes. These space-time rotations are precisely the Lorentz transformations in curvilinear coordinates. The orbital rotatio... Show More
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  • Research Article

    Exoplanets and Their Characterization in the Environment of Galaxy Formation

    Diriba Gonfa Tolasa*, Adugna Terecha Furi

    Issue: Volume 12, Issue 1, March 2025
    Pages: 21-27
    Received: 24 December 2024
    Accepted: 8 January 2025
    Published: 23 January 2025
    DOI: 10.11648/j.ajaa.20251201.13
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    Abstract: The exploration of exoplanets has become a crucial domain in astrophysics, particularly in understanding their formation and evolution within the broader framework of galaxy formation. This paper offers a comprehensive analysis of the current methodologies employed for exoplanet detection and characterization, highlighting the intricate relationshi... Show More
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