We develop a formal procedure for the analysis of imaging spectroscopy data, i.e., remote sensing observations of the structure of a radiation source as a function of an observed parameter (e.g., radiation wavelength, frequency, or energy) and two-dimensional location in the observation plane of the instrument used. In general, imaging spectroscopy involves inversions of both spatial and spectr...

Using the combined resolving power of the Hubble Space Telescope and gravitational lensing, we resolve starforming structures in a ~ z 2.5 galaxy on scales much smaller than the usual kiloparsec diffraction limit of HST. SGASJ111020.0+645950.8 is a clumpy, star-forming galaxy lensed by the galaxy cluster SDSSJ1110+6459 at = z 0.659, with a total magnification ~ ́ 30 across the entire arc. We ...

plane and mulberry trees play a crucial role in purifying the polluted air in tehran as a majorcity. in this research, 13 main districts of tehran city were chosen as study area. 20 completely healthy planeand mulberry species were selected in similar ecological conditions and age range. the uptake of cd and pbwas determined using spectrophotometry, whereas the chlorophyll content was measured ...

BACKGROUND AND PURPOSE First-pass contrast-enhanced MR angiography has become the technique of choice for studying the carotid bifurcation, but this method has some limitations. We evaluated the clinical utility of performing 3D contrast-enhanced MR angiography in the axial plane immediately after performing angiography in the coronal plane. METHODS Cervical carotid arteries of 80 consecutive...

A bstract We analyze the stability of four-dimensional de Sitter vacua constructed by compactifying massive Type IIA supergravity in presence two O8 sources [1]. When embedded String Theory first source has a clear interpretation as an ? plane, but second one could correspond to either + plane or with 16 D8-branes on top. find that this latter solution tachyonic instability, corresponding D8 br...

An inverse source problem for the heat equation is considered. Extraction formulae for information about the time and location when and where the unknown source of the equation firstly appeared are given from a single lateral boundary measurement. New roles of the plane progressive wave solutions or their complex versions for the backward heat equation are given. AMS: 35R30, 80A23

This is despite the pronounced non-uniqueness in classic finite source inversions. The need to better constrain the details of finite rupture processes motivates the series of synthetic and real-data time reversal experiments described in this paper. We address questions concerning the quality of focussing in the source area, the localisation of the fault plane, the estimation of the slip distr...

It was shown recently that the basic properties of a fluctuating electromagnetic beam can be derived from knowledge of a 2 x 2 cross-spectral density matrix of the electric field in the source plane. However, not every such matrix represents a source that will generate a beamlike field. We derive conditions that the matrix must satisfy for the source to generate an electromagnetic Gaussian Sche...

We revisit the gravitational lensing phenomenon using a new visualization technique. It consists in projecting the observers sky into the source plane, what gives rise to a folded and stretched surface. This provides a clear graphical tool to visualize some interesting wellknown effects, such as the development of multiple images of a source, the structure of the caustic curves, the parity of t...