We investigate the Jeans instability of a galactic disk embedded in a dynamically responsive dark halo. It is shown that the disk-halo system becomes nominally Jeans unstable. On small scales the instability is suppressed, if the Toomre stability index Q T is higher than a certain threshold, but on large scales the Jeans instability sets invariably in. However, using a simple self-consistent di...

A linear stability analysis has been performed onto a self-gravitating magnetized gas disk bounded by external pressure. The resulting dispersion relation is fully explained by three kinds of instability: a Parker-type instability driven by self-gravity, usual Jeans gravitational instability and convection. In the direction parallel to the magnetic fields, the magnetic tension completely suppre...

The concept of Jeans gravitational instability is rediscussed in the framework of nonextensive statistics and its associated kinetic theory. A simple analytical formula generalizing the Jeans criterion is derived by assuming that the unperturbed self-gravitating collisionless gas is kinetically described by the q-parameterized class of power law velocity distributions. It is found that the crit...

The concept of Jeans gravitational instability is rediscussed in the framework of the nonextensive statistics proposed by Tsallis. A simple analytical formula generalizing the Jeans criterion is derived by assuming that the un-perturbed self-gravitating collisionless gas is described by the q-parametrized class of nonextensive velocity distribution. It is shown that the critical values of wavel...

This study employed Aaker's brand personality framework to empirically investigate the personality of denim jeans brands and to examine the impact of brand personality on consumer satisfaction and brand loyalty based on data collected from 474 college students. Results revealed that the personality of denim jeans brands can be described in six dimensions with 51 personality traits: attractivene...

The gravitational condensation of a collapsing dust mass is always inhibited by the acoustic viscosity, restricting thereby the unstable scale size. In this paper we show that, if some of the dust particles (in the collapsing mass) are ionised due to plasma environment, a new mode of Jeans condensation namely the Pulsational Mode of the Gravitational Collapse (PMGC) seems to be a likely phenome...

I det senmoderna samhället är jeans ett unisexplagg som bärs av människor alla åldrar och sociala klasser. Jeansens ursprung arbetskläder kulturellt fenomen har sina rötter i USA därifrån plagget spridit sig till resten världen via amerikansk populärkultur. Sverige började tas allmänt bruk början 1960-talet, men då tillgången på ännu var begränsad först 1970-talet man kan tala om att en särskil...