The Astrophysical Multipurpose Software Environment

We present the open source Astrophysical Multi-purpose Software Environment (AMUSE, www.amusecode.org), a component library for performing astrophysical simulations involving different physical domains and scales. It couples existing codes within a Python framework based on a communication layer using MPI. The interfaces are standardized for each domain and their implementation based on MPI guarantees that the whole framework is well-suited for distributed computation. It includes facilities for unit handling and data storage. Currently it includes codes for gravitational dynamics, stellar evolution, hydrodynamics and radiative transfer. Within each domain the interfaces to the codes are as similar as possible. We describe the design and implementation of AMUSE, as well as the main components and community codes currently supported and we discuss the code interactions facilitated by the framework. Additionally, we demonstrate how AMUSE can be used to resolve complex astrophysical problems by presenting example applications.Comment: 23 pages, 25 figures, accepted for A&

Хронотоп та жанрова специфіка дилогії «Шлях невідомого» і «Дім над кручею» Ігоря Качуровського

The article deals with the chronotop of dilogy «The road of the unknown» and «The house on the steep bank» by I. Kachurovsky as a factor of the artistic unity of the work and genre specificity. The core of «The road of the unknown» is a chronotop of the road on which various meetings are waiting for the hero during his travel to the native land. Linear adventurous time predominates. But in «The house on the steep bank» this type of time interlaces with the cyclic idyllic time. The volume of chronotop, its ability to incorporate the smaller chronotops, establish complicated relations between them and some other characteristics make it possible to determine the genre of the dilogy as a novel in short stories, and genre variety – as an adventurous-intellectual one

Samples and statistics of CSS and GPS sources

Several samples have been proposed in the last years in order to study the properties of intrinsically small sources. In this paper, we review the properties of the main samples that are currently available, both selected on the basis of spectral index and of morphology. As a result of the work in this area, large numbers of intrinsically small sources have been found. We summarize the present status of hot spot advance measurements, listing 18 sources with available VLBI data. The mean hot spot separation velocity is v_{sep} = (0.19 +/- 0.11)h^{-1}c and the kinematic ages span the range from 20 to 3000 years. Finally, we present a brief outlook on the use of future instrumentation in order to improve our understanding of radio source evolution. Prospects for VSOP2, e-VLA, e-MERLIN, LOFAR, ALMA, and Fermi are suggested.Comment: 6 pages, invited talk at "The Fourth Workshop on Compact Steep Spectrum and GHz-Peaked Spectrum Radio Sources