2016/11/08 by Mohsen Nejad-Asghar, M. Nejad-Asghar · 11 citations
Mathematics · Physics and Astronomy · #Ambipolar diffusion #Astrophysics and Star Formation Studies #Cosmology #Diffusion #Gas Dynamics and Kinetic Theory #Hydrodynamic radius #Magnetic field #Molecular cloud #Optical properties and cooling technologies in crystalline materials #RADIUS #SPHERES #astro-ph.GA
paper · pdf · doi:10.1007/s10509-016-2970-2
published in Astrophysics and Space Science 361(12) (Springer Science+Business Media) · 10 pages, 4 figures, accepted for publication in Ap&SS
arxiv created 2016/11/08 · openalex publication_date 2016/11/21 · openalex created_date 2016/11/30 · arxiv updated 2016/12/07 · openalex updated_date 2026/08/05
Magnetic fluctuations through the molecular cloud cores can produce ambipolar diffusion (AD) heating, which consequently can produce temperature gradients through the core. The aim of this paper is to investigate the effects of these produced temperature gradients on the radius and mass of the non-isothermal modified Bonnor-Ebert spheres (MBES). Here, we use the parameter κ to represent the magnetic fluctuations through the molecular cloud cores. This parameter introduces the change of magnetic filed strength in the length-scale. The results show that increasing of κ leads to an increase of the radius and mass of MBES. The most important result is existence of the gravitationally stable high-mass prestellar cores at the low-density molecular medium with great magnetic fluctuations.