Here, we investigate the influence of radiation pressure from massive stars and clusters on KH instabilities in the interface between HII region and molecular clouds. The stability of the interface between HII region and molecular cloud...

This study demonstrates how thermal structures in the interstellar medium can emerge as a result of thermal instability. For a two-dimensional case, the steady state thermal structures was investigeted and it was shown that a large class...

The Jeans analysis is studied in the first post-Newtonian limit. In other words, the relativistic effects on local gravitational instability are considered for systems whose characteristic velocities and corresponding gravitational fields are higher...

We find the generalized version of the Toomre’s criterion for the stability of a rotating thin

disc in the context of Eddington-inspired Born-Infeld (EiBI) gravity that possesses one free

parameter χ . To do ...

The gravitational stability of a two-dimensional self-gravitating and differentially rotating gaseous disk in the

context of post-Newtonian (PN) theory is studied. Using the perturbative method and applying the ...

point of a given query point with increasing dimensionality. It has been shown that if dimensions are independently distributed, and normalized to have zero mean and unit variance, instability happens. In this paper, it is shown that the normalization...

dark matter halo may support bar instability, MOG has stabilizing effects. Furthermore, we show that MOG supports fast pattern speeds, and unlike in the dark matter halo models, the pattern speed does not decrease with time. These differences, combined...

Duschl et al. (2000) have shown that the standard model for geometrically

thin accretion disks (®-disks) leads to inconsistency if self-gravity play a role. This

problem arise from parametrization of viscosity ...

Sfeedan village is located about 55 km of southeat of Bojnord city in the northest of Iran.