I review the assumptions and observations that motivate the concept of the extragalactic cosmic background radiation, and the issues of energy accounts and star formation history as a function of galaxy morphological type that figure in the interpretation of the measurements of the extragalactic infrared background. 1. Fundamental Assumptions It is useful to begin by recalling the basic assumpt...

The detection model of sky polarization based on image as a new navigation technology, has a relatively good stability and high research value. In order to improve the accuracy and reliability of the polarization mode measurement and continuous measurement, it constructs a set device of polarized light detection based on image’s real-time synchronous acquisition. Besides, it has carried on the ...

In this paper, we review the history, current state-of-art, and physical applications of spectral theory two classes random functions. One class consists homogeneous isotropic fields defined on a Euclidean space taking values in real finite-dimensional linear space. to continuum physics, such field describes properties continuous medium situation, when microstructure is attached all points. The...

The applicability of the so-called isotropic complete photonic-band-gap (CPBG) models [S. John and J. Wang, Phys. Rev. Lett. 64, 2418 (1990)] to capture essential features of the spontaneous emission (SE) of a fluorescent atom or molecule near a band-gap-edge of a CPBG structure is discussed. PACS number: 32.80.-t Photon interactions with atoms PACS number: 42.70.Qs Photonic bandgap materials w...

We present Monte Carlo simulation results for square-well homopolymers at a series of bond lengths. Although the model contains only isotropic pairwise interactions, under appropriate conditions this system shows spontaneous chiral symmetry breaking, where the chain exists in either a left- or a right-handed helical structure. We investigate how this behavior depends upon the ratio between bond...

In present work, we have studied a new stellar distribution model with spherically symmetric matter and an uncharged isotropic in general relativity. this model, considered particular metric potential. The is capable to represents some known compact stars like Her X-1,4U 1538-52 SAX J1808.4-3658.The satisfy the energy condition hydrostatic equilibrium equation, i.e., modified Tolman-Oppenheimer...