Astrophysics of Neutron Stars
The group in Turkey is accomplished, with an emerging group of young scientists and students, needing further training and research links on theory, data analysis and observational aspects of neutron star research. The field of instrumentation for high energy astrophysics and training for future European space missions, XEUS in particular is an important direction of this ToK project, where training is needed for the scientific and technological extension and integration of the group into the European research area.
Orhanli - Tuzla
UNIVERSITEIT VAN AMSTERDAM
UNIVERSITY OF LEICESTER
MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTTEN E.V.
CENTRE D'ETUDE SPATIALE DES RAYONNEMENTS
DANISH NATIONAL SPACE CENTER
UNIVERSITY OF CRETE
UNIVERSITY OF WARWICK
Final Activity Report Summary - ASTRONS (Astrophysics of Neutron Stars)
We made observations with international X and gamma ray observatory satellites RXTE, Swift, Chandra, Fermi, INTEGRAL and XMM-Newton and used their archives. We learned a lot of interesting new science, resulting in 8 PhD theses, 45 articles in major international scientific journals (+5 submitted) and 11 papers in scientific conferences. The scientific results were disseminated at three ASTRONS Workshops in Istanbul and at ASTRONS Conference in 2010 in Izmir.
The training took place via workshops on data analysis (Fermi and timing), and PhD courses. Highlights are:
(i) Discovery of two new Soft Gamma-Ray Repeaters
(ii) Development of fall back disk model , explaining properties of some young neutron stars by effect of a disk left over from the supernova explosion. Fitted spectrum of light and infrared radiation from first observed fallback disk.
(iii) Properties of X-ray binaries as individual sources and as a class.
(iv) A demonstration that the reason for not seeing pulses from most low mass X-ray binaries (LMXB) is not due to effects of Compton scattering.
(v) Very fast oscillations observed in X-rays from LMXB interpreted as disk oscillations.
(vi) How the superconductor and superfluid inside a neutron star effect its dynamics.
(vii) Comparison of black hole and neutron star properties with distinct signatures.
These exciting results were widely shared with the public, and with teaches and children in primary-secondary schools. In technology we set up the first laboratory in Turkey for building and testing X and gamma ray detectors for scientific research from space. ASTRONS gave the first and largest support for this effort in Turkey, essential for development of space science and technology. The lab, now functioning at Sabanci University started generating support in further grants. A proposal to TUBITAK for a low cost high scientific gain hard X-ray instrument with optimised mask pattern was accepted. A recent FP7 Cooperation proposal with ASTRONS Partner DTU-SPACE and TUBITAK-SPACE explores a wide field X-ray detector on a rotating cubesat.
Deliverables not available
Publications not available