Design and Tests of the Hard X-ray Polarimeter X-Calibur
| Autor: | Scott Barthelmy, Takashi Okajima, Ramanath Cowsik, K. D. Finkelstein, Jeremy D. Schnittman, Matthew G. Baring, B. Zeiger, Matthias Beilicke, Q. Guo, G. De Geronimo, Paul Dowkontt, John Mitchell, Fabian Kislat, Takuya Miyazawa, Henric Krawczynski, Arash Bodaghee |
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| Rok vydání: | 2014 |
| Předmět: |
Physics
Active galactic nucleus Photon business.industry Astrophysics::High Energy Astrophysical Phenomena Astrophysics::Instrumentation and Methods for Astrophysics Compton scattering Polarimetry Polarimeter Polarization (waves) Optics Cardinal point Binary black hole lcsh:TA1-2040 General Earth and Planetary Sciences lcsh:Engineering (General). Civil engineering (General) business General Environmental Science |
| Zdroj: | Acta Polytechnica CTU Proceedings, Vol 1, Iss 1, Pp 293-297 (2014) |
| ISSN: | 2336-5382 |
| Popis: | X-ray polarimetry promises to give qualitatively new information bout high-energy astrophysical sources, such as binary black hole systems, micro-quasars, active galactic nuclei, and gamma-ray bursts. We designed, built and tested ahard X-ray polarimeter, X-Calibur, to be used in the focal plane of the InFOCuS grazing incidence hard X-ray telescope.X-Calibur combines a low-Z Compton scatterer with a CZT detector assembly to measure the polarization of 20−60 keV X-rays making use of the fact that polarized photons Compton scatter preferentially perpendicular to the electric field orientation; in principal, a similar space-borne experiment could be operated in the 5−100 keV regime. X-Calibur achieves a high detection efficiency of order unity. |
| Databáze: | OpenAIRE |
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