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Balloon-borne hard X-ray polarimetry with PoGOLite
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0001-7011-7229
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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2012 (English)In: 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC), IEEE , 2012, 1885-1892 p.Conference paper, Published paper (Refereed)
Abstract [en]

PoGOLite is a hard X-ray polarimeter operating in the 25-100 keV energy band. The instrument design is optimised for the observation of compact astrophysical sources. Observations are conducted from a stabilised stratospheric balloon platform at an altitude of approximately 40 km. The primary targets for first balloon flights of a reduced effective area instrument are the Crab and Cygnus-X1. The polarisation of incoming photons is determined using coincident Compton scattering and photo-absorption events reconstructed in an array of plastic scintillator detector cells surrounded by a bismuth germanate oxide (BGO) side anticoincidence shield and a polyethylene neutron shield. A custom attitude control system keeps the polarimeter field-of-view aligned to targets of interest, compensating for sidereal motion and perturbations such as torsional forces in the balloon rigging. An overview of the PoGOLite project is presented and the outcome of the ill-fated maiden balloon flight is discussed.

Place, publisher, year, edition, pages
IEEE , 2012. 1885-1892 p.
Series
IEEE Nuclear Science Symposium Conference Record, ISSN 1095-7863
Keyword [en]
astrophysics, Compton, Crab, Cygnus X-1, polarisation, scientific ballooning
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-128989DOI: 10.1109/NSSMIC.2012.6551438ISI: 000326814201209Scopus ID: 2-s2.0-84881608892ISBN: 978-146732030-6 (print)OAI: oai:DiVA.org:kth-128989DiVA: diva2:650073
Conference
2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012; Anaheim, CA; United States; 29 October 2012 through 3 November 2012
Note

QC 20130919

Available from: 2013-09-19 Created: 2013-09-17 Last updated: 2013-12-18Bibliographically approved

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Pearce, MarkKiss, Mózsi

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