In this letter, we present the results of our study of galaxy-galaxy lensing in massive cluster-lenses spanning z = 0.17 to 0.58, utilizing high-quality archival Hubble Space Telescope (HST ) data. Local anisotropies in the shear maps are assumed to arise from dark matter substructure within these clusters. Associating the substructure with bright early-type cluster galaxies, we quantify the pr...

In this paper we show how classical error estimates for various discretiza-tions of the source iteration map in slab geometry can be used to construct accurate approximate inverses in the context of fast multilevel methods. For discretizations that give strongly convergent collectively compact sequences of approximate source iteration maps, the Atkinson-Brakhage approximate inverse can be appli...

We know that the slope of the radial, stellar light distribution in galaxies is well described by an exponential decline and this distribution is often truncated at a break radius (Rbr). We don’t have a clear understanding for the origin of these outer truncations and several hypotheses have been proposed to explain them. We want to test the various theories with direct observations of the cold...

19 Mass associated with surface topography makes a significant contribution to the Earth’s 20 gravitational potential at all spectral scales. Accurate computation in spherical harmonics to 21 high degree requires calculations of multiple integer powers of the global topography. The 22 purpose of this paper is to analyse the contributions of Earth’s topography to its potential to 23 the tenth po...

This paper presents an extended three-dimensional (3D) exact rebinning formula in the Fourier space that leads to an iterative reprojection algorithm (iterative FOREPROJ), which enables the estimation of unmeasured oblique projection data on the basis of the whole set of measured data. In first approximation, this analytical formula also leads to an extended Fourier rebinning equation that is t...

Direct repeats of Arabidopsis telomeric sequence were constructed to test telomere-mediated chromosomal truncation in maize. Two constructs with 2.6 kb of telomeric sequence were used to transform maize immature embryos by Agrobacterium-mediated transformation. One hundred seventy-six transgenic lines were recovered in which 231 transgene loci were revealed by a FISH analysis. To analyze chromo...

The Ras-GRF1 exchange factor has regulated guanine nucleotide exchange factor (GEF) activity for H-Ras and Rac1 through separate domains. Both H-Ras and Rac1 activation have been linked to synaptic plasticity and thus could contribute to the function of Ras-GRF1 in neuronal signal transduction pathways that underlie learning and memory. We defined the effects of Ras-GRF1 and truncation mutants ...

The Ras-GRF1 exchange factor has regulated guanine nucleotide exchange factor (GEF) activity for H-Ras and Rac1 through separate domains. Both H-Ras and Rac1 activation have been linked to synaptic plasticity, and thus could contribute to the function of Ras-GRF1 in neuronal signal transduction pathways that underlie learning and memory. We defined the effects of RasGRF1 and truncation mutants ...