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I summarize recent observations of the kinematics of hot tracers in elliptical galaxy halos (globular clusters, planetary nebulae, and integrated stellar light), and what these tell us about the dynamics, dark matter content, and formation of ellipticals. A generic result is the ubiquity of dark matter halos in ellipticals. Studies of globular clusters and planetary nebulae are now finding oute...

The nucleus of M31 may be a thick eccentric disk, composed of stars traveling on nearly Keplerian orbits around a black hole or other dark compact object. This hypothesis reproduces most of the features seen in HST photometry of the center of M31; in particular the bright o center source P1 is the apoapsis of the disk. An eccentric disk can also explain the rotation curve and asymmetric dispers...

-Spatial dark solitons are known to be stable nonlinear localized waves in self-defocusing media. We demonstrate how to analyse the dynamics of dark solitons in the presence of small perturbations, and we consider the effect of two-photon absorption on dark solitons as a particular example. We also predict a new type of dark solitons of circular symmetry, ring dark solitons, which are stable ag...

We present a double distribution function of dark matter halos, with respect to both object mass and local over(or under-) density. This analytical tool provides a statistical treatment of the properties of matter surrounding collapsed objects, and can be used to study environmental effects on hierarchical structure formation. The size of the “local environment” of a collapsed object is defined...

the purpose of this research is to analyze differential adpositional case marking (dacm) in vafsi within ot framework by using the generalization of aissen’s (2003) differential object marking (dom) model. while bossong (1985) has traced dom in more than 300 languages, dacm has not been investigated typologically, yet. dacm, as a branch of differential case marking (dcm), questions the effect o...

ABSTARCT Image can be represented in the area of Digital Processing, which is an optically formed duplicate or other reproduction of an object. In this paper images are being used in analysing of an Object. Noise means unwanted signal in an Image. Every Image is represented by noise. Salt and Pepper noise has been represented by bright pixels in dark regions and dark pixels in bright regions. I...

Correcting satellite imagery for atmospheric effects is a common procedure today. Indeed there are many techniques and software applications that offer atmospheric correction processes. This study compared several techniques (apparent reflectance, dark-object subtraction, Cos(t), and the full cost model) in both Idrisi and ENVI software to determine the level of similarity between resulting ima...