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Anfang der 1970er-Jahre engagierte sich eine Gruppe junger DDR-Autorinnen und Autoren für eine kritische, öffentliche Auseinandersetzung mit den Widersprüchen des realsozialistischen Alltags. Klaus Schlesinger (1937 2001) war neben Ulrich Plenzdorf und Jurek Becker einer ihrer profiliertesten Akteure. In dem vorliegenden Buch verfolgt Jan Kostka dessen künstlerische Entwicklung, indem er jene Texte und Bücher interpretiert, die Schlesinger bis zu seiner Übersiedlung nach Westberlin geschrieben hatte. Dabei gibt er Einblicke in das literarische Leben Berlins, in journalistische Initiativen und verlagspolitische Strategien aber auch in die westliche Rezeption der DDR-Literatur. Den zum Teil unveröffentlichten Nachlass Schlesingers aufarbeitend, vermittelt Jan Kostka das spezifische Literaturverständnis des Autors: die Benennung und Zuspitzung gesellschaftlicher Konfliktlagen, ohne diese durch vorschnelle Antworten und selbstgewisse Schuldzuweisungen abzuschwächen.
Introducing the CTA concept
(2013)
The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve the sensitivity by about an order of magnitude, to span about four decades of energy, from a few tens of GeV to above 100 TeV with enhanced angular and energy resolutions over existing VHE gamma-ray observatories. An international collaboration has formed with more than 1000 members from 27 countries in Europe, Asia, Africa and North and South America. In 2010 the CTA Consortium completed a Design Study and started a three-year Preparatory Phase which leads to production readiness of CTA in 2014. In this paper we introduce the science goals and the concept of CTA, and provide an overview of the project.
Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a huge potential in astrophysics, particle physics and cosmology. CTA is an international initiative to build the next generation instrument, with a factor of 5-10 improvement in sensitivity in the 100 GeV-10 TeV range and the extension to energies well below 100 GeV and above 100 TeV. CTA will consist of two arrays (one in the north, one in the south) for full sky coverage and will be operated as open observatory. The design of CTA is based on currently available technology. This document reports on the status and presents the major design concepts of CTA.