Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2806...52k&link_type=abstract
Proc. SPIE Vol. 2806, p. 52-63, Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions, Brian D. Ramsey; Thomas A. Parnell
Astronomy and Astrophysics
Astrophysics
2
Scientific paper
We present an instrument concept called GIPSI that uses germanium strip detectors in an imaging system to provide narrow line sensitivity less than 8.0 multiplied by 10(superscript -6) gamma cm(superscript -2)s(superscript -1) at 100 keV in a 2 week exposure (3 sigma), and which has a point spread function (spatial resolution of approximately 20 arc minutes rms. The germanium strip detectors also make an excellent polarimeter by capitalizing on the angular dependence of the Compton scattering cross section. Gamma-ray polarimetry in the energy band around 60 - 300 keV is an interesting area of high energy astrophysics where observations have not been possible with the technologies employed in current and past space missions. We have tested a prototype detector with polarized beams and have measured a modulation factor of approximately 0.8 at 100 keV. A sensitive instrument can be realized on a modest space mission or a long duration balloon flight. Linear polarization can be detected in sources such as the Crab Pulsar, Cen A, Cyg X-1, and solar flares down to less than 5% of the source flux. The proposed instrument would have a collecting area of 400 cm(superscript 2).
Graham Brad
Inderhees Susan E.
Johnson Neil W.
Kinzer Robert L.
Kroeger Richard A.
No associations
LandOfFree
Gamma-ray instrument for polarimetry, spectroscopy, and imaging (GIPSI) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gamma-ray instrument for polarimetry, spectroscopy, and imaging (GIPSI), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gamma-ray instrument for polarimetry, spectroscopy, and imaging (GIPSI) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1141047