Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Mahmoud Gholipour"'
Autor:
Mahmoud Gholipour
Publikováno v:
Iranian Journal of Physics Research, Vol 22, Iss 3, Pp 649-662 (2022)
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
Externí odkaz:
https://doaj.org/article/c0913d3255ed4444858b443635d77b4e
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 111 (2024)
This study examines the importance of the thermal effects of ambipolar diffusion (AD), by analyzing the governing properties in the middle and outer regions of a standard thin accretion disk with outflows. To accomplish this, we derive the nonideal m
Externí odkaz:
https://doaj.org/article/e17a345ba8ac436fbc9e4fad2c6fbc9a
Autor:
Mahmoud Gholipour
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 81 (2024)
Recent observational and simulation studies have revealed that ambipolar diffusion is an important phenomenon in the outer regions of a protoplanetary disk (PPD). However, numerous simulation studies have found that ambipolar diffusion suppresses the
Externí odkaz:
https://doaj.org/article/36004a419c6443f3bbc379978416ad37
Autor:
Mahmoud Gholipour
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 1, p 57 (2024)
In this study, we consider the effects of ambipolar diffusion during the gravitational collapse of a radiative cooling filamentary molecular cloud. Two separate configurations of magnetic field, i.e., axial and toroidal, are considered in the presenc
Externí odkaz:
https://doaj.org/article/d555b4a1d55448039f4dde4bf209af25
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 510:3437-3448
The aim of this study is to investigate the impact of the cosmic ray (CR) and ambipolar diffusion (AD) on the thermal instability in a weakly ionized gas. The CR propagates along the magnetic-field line, where the AD is present. The weakly ionized ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9609bd86a265228216c66507406c3075
https://doi.org/10.1093/mnras/stab3582
https://doi.org/10.1093/mnras/stab3582
Autor:
Mahmoud Gholipour
Publikováno v:
Astrophysics and Space Science. 366
The aim of this study is to investigate the evolution of the dust-to-gas ratio in the self-similar collapse of a filamentary molecular cloud. For this purpose, we use single fluid dusty-gas model in our study, which describes a single fluid moving wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::beb209a01763e6199ce4cd017e37f4b8
https://doi.org/10.1007/s10509-021-04021-6
https://doi.org/10.1007/s10509-021-04021-6
Autor:
Mahmoud Gholipour
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 487:3631-3643
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1ef2fd45eefd1905ca07c7f6a536d14
https://doi.org/10.1093/mnras/stz1535
https://doi.org/10.1093/mnras/stz1535
Autor:
Mahmoud Gholipour
Publikováno v:
New Astronomy. 67:103-115
The aim of this work is to study the effects of an external magnetic field generated by a magnetized compact star on the outflows of its accretion disc. For this purpose, we solve a set of magneto-hydrodynamic (MHD) equations for an accretion disc in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3df3cf073d30825c6d137d3e7a93ee75
https://doi.org/10.1016/j.newast.2018.09.010
https://doi.org/10.1016/j.newast.2018.09.010
Autor:
Mahmoud Gholipour
Publikováno v:
New Astronomy. 61:69-77
Recent observations have revealed that there is a power-law relation between magnetic field and density in molecular clouds. Furthermore, turbulence has been observed in some regions of molecular clouds and the velocity dispersion resulting from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc1a43ff6aae5a8bdbc62cb99698aaa0
https://doi.org/10.1016/j.newast.2017.12.003
https://doi.org/10.1016/j.newast.2017.12.003
Autor:
Mahmoud Gholipour
Publikováno v:
New Astronomy. 57:43-50
The aim of this work is to investigate the effect of the presence of a magnetic Prandtl number on the structure of an accretion flow with a bipolar outflow by focusing on the density structure. Two cold and hot classes are considered for accretion fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12ccc8f137e32c77a645149a66b6b136
https://doi.org/10.1016/j.newast.2017.06.005
https://doi.org/10.1016/j.newast.2017.06.005