Abstract
This paper introduces a second-generation balloon-borne hard X-ray polarimetry mission, XL-Calibur.1 The XL-Calibur will follow up on the X-Calibur mission which was flown from Dec. 29, 2018 for a 2.5 days balloon flight from McMurdo (the Antarctic). X-ray polarimetry promises to give qualitatively new information about high-energy astrophysical sources, such as pulsars and binary black hole systems. The XL-Calibur contains a grazing incidence X-ray telescope with a focal plane detector unit that is sensitive to linear polarization. The telescope is very similar in design to the ASTRO-H HXT telescopes that has the world's largest effective area above 10 keV. XL-Calibur will use the same type of mirror. The detector unit combines a low atomic number Compton scatterer with a CdZnTe detector assembly to measure the polarization making use of the fact that polarized photons Compton scatter preferentially perpendicular to the electric field orientation. It also contains a CdZnTe imager at the bottom. The detector assembly is surrounded by a BGO anticoincidence shield. The pointing system with arcsecond accuracy will be achieved by the WASP (Wallops Arc Second Pointer) from NASA's Wallops Flight Facility. A first flight of the XL-Calibur is currently foreseen for 2022, flying from Sweden.
| Original language | English |
|---|---|
| Title of host publication | Space Telescopes and Instrumentation 2020 |
| Subtitle of host publication | Ultraviolet to Gamma Ray |
| Editors | Jan-Willem A. den Herder, Shouleh Nikzad, Kazuhiro Nakazawa |
| Publisher | SPIE |
| ISBN (Electronic) | 9781510636750 |
| DOIs | |
| Publication status | Published - 2020 |
| Externally published | Yes |
| Event | Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray - Virtual, Online, United States Duration: 14-12-2020 → 18-12-2020 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 11444 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 1996-756X |
Conference
| Conference | Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray |
|---|---|
| Country/Territory | United States |
| City | Virtual, Online |
| Period | 14-12-20 → 18-12-20 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
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