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Information Journal Paper

Title

SOLAR ROTATION GRAVITATIONAL MOMENTS

Pages

  75-79

Abstract

 Gravitational multipole moments of the SUN are still poorly known. Theoretically, the difficulty is mainly due to the differential rotation for which the velocity rate varies both on the surface and with the depth. From an observational point of view, the multipole moments cannot be directly measured. However, recent progresses have been made proving the existence of a strong radial differential rotation in a thin layer near the solar surface (the leptocline). Applying the theory of rotating stars, we will first compute values of J2 and J4 taking into account the radial gradient of rotation, then we will compare these values with the existing ones, giving a more complete review. We will explain some astrophysical outcomes, mainly on the relativistic Post Newtonian parameters. Finally we will conclude by indicating how space experiments (balloon SDS flights, Golf NG, Beppi-Colombo, Gaia...) will be essential to unambiguously determine these parameters.

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  • Cite

    APA: Copy

    AJABSHIRIZADEH, A., & FAZEL, Z.. (2005). SOLAR ROTATION GRAVITATIONAL MOMENTS. IRANIAN JOURNAL OF PHYSICS RESEARCH, 5(3), 75-79. SID. https://sid.ir/paper/2015/en

    Vancouver: Copy

    AJABSHIRIZADEH A., FAZEL Z.. SOLAR ROTATION GRAVITATIONAL MOMENTS. IRANIAN JOURNAL OF PHYSICS RESEARCH[Internet]. 2005;5(3):75-79. Available from: https://sid.ir/paper/2015/en

    IEEE: Copy

    A. AJABSHIRIZADEH, and Z. FAZEL, “SOLAR ROTATION GRAVITATIONAL MOMENTS,” IRANIAN JOURNAL OF PHYSICS RESEARCH, vol. 5, no. 3, pp. 75–79, 2005, [Online]. Available: https://sid.ir/paper/2015/en

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