The study of non-axisymmetric structure of a protoplanetary disc

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Gholipour Mahmoud

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ISSN: 2588-4824

Journal Paper

Paper Information

Journal: Iranian Journal of Physics Research Year:2022 | Volume:22 | Issue:3 (پیاپی 89) Page(s): 649-662

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Information Journal Paper

Title

The study of non-axisymmetric structure of a protoplanetary disc

Author(s)

Gholipour Mahmoud | Issue Writer Certificate

Keywords

accretionQ4

accretion discsQ4

hydrodynamicsQ4

protoplanetary discsQ4

Abstract

This study aims to determine the non-axisymmetric structure of a protoplanetary disc caused by the gravitational potential of a massive planet. The disc becomes non-axisymmetric by considering this gravitational effect, so that the azimuthal changes will be important. Using the spectral method, the partial differential equations (PDEs) can be converted to the ordinary differential equations (ODEs), where the problem is solvable via the proper boundary conditions. Two important parameters, i.e. "sigma" (mass ratio of the second object to the central object) and "x" (ratio the radius to the distance between two objects) play very important roles in this problem. The obtained results show that the disc structure at a fixed radius is very sensitive to the azimuthal changes. This issue addresses some approaches on the disc structure, which have not received much attention. Also, we found that there is a high potential to transport the angular momentum of the disc material near the second object even in the low viscosity regime. Furthermore, if the mass of the second object is greater than a certain value, the second object may be participating in the construction of the planets. It can be concluded that the presence of the second object may be helpful in the planet formation

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