668 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for Research in Fundamental SciencesIR108 papers
- Damghan UniversityIR31 papers
- Islamic Azad University, MashhadIR13 papers
- K. N. Toosi University of TechnologyIR13 papers
- Farhangian UniversityIR12 papers
- Shahid Beheshti UniversityIR11 papers
- University of TehranIR11 papers
- Dublin City UniversityIE10 papers
- Golestan UniversityIR10 papers
- Centre National de la Recherche ScientifiqueFR9 papers
- Deakin UniversityAU9 papers
- Institute of Metal Superplasticity ProblemsRU9 papers
34 papers · 1 filter
Hot accretion with outflow and thermal conduction
Mohsen Shadmehri
We present self-similar solutions for advection -dominated accretion flows with thermal conduction in the presence of outflows. Possible effects of outflows on the accretion flow a…
Reanalysis of two eclipsing binaries: EE Aqr and Z Vul
Sayyed Mohammad Reza Ghoreyshi, Jamshid Ghanbari, Fatemeh Salehi
We study the radial-velocity and light curves of the two eclipsing binaries EE Aqr and Z Vul. Using the latest version of the Wilson & Van Hamme (2003) model, absolute parameters f…
The Effects of Thermal Conduction on the ADAF with a Toroidal Magnetic Field
S. Abbassi, J. Ghanbari, S. Najjar
The observation of the hot gas surrounding Sgr and a few other nearby galactic nuclei imply that electron and proton mean free paths are comparable to the gas capture radius.…
An Accretion-Disc Model for the Algol-Type Eclipsing Binary System AV Del
Sayyed Mohammad Reza Ghoreyshi, Jamshid Ghanbari, Fatemeh Salehi
This study inspects the light and radial-velocity curves of the eclipsing binary AV Del. In comparison with other studies already done, the study shows that the absolute elements,…
The role of Kelvin-Helmholtz instability in dusty and partially ionized outflows
Mohsen Shadmehri, Turlough P. Downes
We investigate the linear theory of Kelvin-Helmholtz instability at the interface between a partially ionized dusty outflow and the ambient material analytically. We model the inte…
Thin accretion disc with a corona in a central magnetic field
Fazeleh Khajenabi, Mohsen Shadmehri, Sami Dib
We study the steady-state structure of an accretion disc with a corona surrounding a central, rotating, magnetized star. We assume that the magneto-rotational instability is the do…
Primordial Mass Segregation in Starburst Stellar Clusters
Sami Dib, Mohsen Shadmehri, Maheswar Gopinathan +2
We present a model to explain the mass segregation and shallow mass functions observed in the central parts of dense and young starburst stellar clusters. The model assumes that th…
Dynamics of charged dust particles in protoplanetary discs
Mohsen Shadmehri
We study the effect of an imposed magnetic field on the motion of charged dust particles in magnetically active regions of a protoplanetary disc. Assuming a power law structure for…
Kelvin-Helmholtz instability in a weakly ionized layer
Mohsen Shadmehri, Turlough P. Downes
We study the linear theory of Kelvin-Helmholtz instability in a layer of ions and neutrals with finite thickness. In the short wavelength limit the thickness of the layer has a neg…
The Origin of the Arches Stellar Cluster Mass Function
Sami Dib, Jongsoo Kim, Mohsen Shadmehri
We investigate the time evolution of the mass distribution of pre-stellar cores (PSCs) and their transition to the initial stellar mass function (IMF) in the central parts of a mol…
Self-Similar Solutions of Viscous-Resistive ADAFs With Poloidal Magnetic Fields
J. Ghanbari, F. Salehi, S. Abbassi
We carry out the self-similar solutions of viscous-resistive accretion flows around a magnetized compact object. We consider an axisymmetric, rotating, isotheral steady accretion f…
Formation and Collapse of Quiescent Cloud Cores Induced by Dynamic Compressions
Gilberto C. Gómez, Enrique Vázquez-Semadeni, Mohsen Shadmehri +1
(Abridged) We present numerical hydrodynamical simulations of the formation, evolution and gravitational collapse of isothermal molecular cloud cores. A compressive wave is set up…
Gravitational instability of discs with dissipative corona around supermassive black holes
Fazeleh Khajenabi, Mohsen Shadmehri
We study the dynamical structure of a self-gravitating disc with corona around a super-massive black hole. Assuming that the magneto-rotational-instability (MRI) responsible for ge…
Self-Similar Evolutionary Solutions of Self-Gravitating, Polytropic -Viscous Disks
Shahram Abbassi, Jamshid Ghanbari, Fatemeh Salehi
We carry out the effect of -prescription for viscosity which introduced by Duschel et al. 2000 & Hure, Richard & Zhan 2001, in a standard self-gravitating thin disks. We were pr…
The Virial Balance of Clumps and Cores in Molecular Clouds
Sami Dib, Jongsoo Kim, Enrique Vazquez-Semadeni +2
We study the instantaneous virial balance of clumps and cores (CCs) in 3D simulations of driven, MHD, isothermal molecular clouds (MCs). The models represent a range of magnetic fi…
Formation of Small-Scale Condensations in the Molecular Clouds via Thermal Instability
Mohsen Nejad-Asghar, Jamshid Ghanbari
A systematic study of the linear thermal instability of a self-gravitating magnetic molecular cloud is carried out for the case when the unperturbed background is subject to local…
Linear Thermal Instability and Fluctuations in Molecular Clouds
Mohsen Nejad-Asghar, Jamshid Ghanbari
Evidence of small-scale condensations in the magnetic molecular clouds has been accumulating over the past decades through radio and optical/ultraviolet observations. The origin an…
The non-linear theory of a warped accretion disc with the beta-viscosity prescription
J. Ghanbari, M. Shadmehri, F. Salehi
We study the nonlinear dynamics of a warped or twisted accretion disc, in which the viscosity coefficients are assumed to be locally proportional to the rotational velocity (beta-…
A class of self-gravitating, magnetized accretion disks
Mohsen Shadmehri, Fazeleh Khajenabi
The steady-state structure of self-gravitating, magnetized accretion disks is studied using a set of self-similar solutions which are appropriate in the outer regions. The disk is…
Self-similar structure of the magnetized radiation-dominated accretion disks
Mohsen Shadmehri, Fazeleh Khajenabi
We investigate the effects of a large-scale magnetic field with open field lines on the steady-state structure of a radiation-dominated accretion disk, using self-similarity techni…
Gravitational collapse of polytropic, magnetized, filamentary clouds
Mohsen Shadmehri
When the gas of a magnetized filamentary cloud obeys a polytropic equation of state, gravitational collapse of the cloud is studied using a simplified model. We concentrate on the…
The Lifetimes and Evolution of Molecular Cloud Cores
Enrique Vazquez-Semadeni, Jongsoo Kim, Mohsen Shadmehri +1
We discuss the lifetimes and evolution of clumps and cores formed as turbulent density fluctuations in nearly isothermal molecular clouds. In the non-magnetic case, clumps are unli…
Variability in the stellar initial mass function at high mass: coalescence models for starburst clusters
Mohsen Shadmehri
A coalescence model using the observed properties of pre-stellar condensations (PSCs) shows how an initially steep IMF that might be characteristic of primordial cloud fragmentatio…
The Lifetimes of Molecular Cloud Cores: What is the Role of the Magnetic Field?
E. Vazquez-Semadeni, J. Kim, M. Shadmehri +1
We discuss the lifetimes and evolution of dense cores formed as turbulent density fluctuations in magnetized, isothermal molecular clouds. We consider numerical simulations in whic…