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Your search keyword '"Rene Engel Kristansen"' showing total 2 results
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2 results on '"Rene Engel Kristansen"'

1. JEM-X: the x-ray monitor on INTEGRAL

Author

Marco Feroci, Josef Polny, A. A. Zdziarski, P. B. Mogensen, V. Collado, I. L. Rasmussen, Jose-Luis Requena, G. Loffredo, Fernando Cerdeira Pérez, Roland Svensson, Herbert W. Schnopper, Osmi Vilhu, J. Peris, K. Omoe, J. M. Rodrigo, Niels J. Westergaard, S. M. Pedersen, A. J. Castro-Tirado, K. Harpo Andersen, Carl Budtz-Jørgensen, C. A. Oxborrow, Veikko J. Kamarainen, Filippo Frontera, Carlo Pelliciari, S. Laursen, Jérôme Chenevez, Rene Engel Kristansen, Allan Hornstrup, V. Carassiti, Alda Rubini, S. Larsson, M. Morawski, Guido Zavattini, P. A. Jensen, E. Morelli, Victor Reglero, T. Andersson, Niels Lund, Enrico Costa, S. Brandt, Juhani Huovelin, G. Juchnikowski, and Alfredo Morbidini

Subjects
Physics::Instrumentation and Detectors, micro strip detector, Astrophysics::High Energy Astrophysical Phenomena, Field of view, X-ray telescope, 01 natural sciences, law.invention, Jem-X, INTEGRAL, X-ray astronimy, Telescope, Optics, law, 0103 physical sciences, Angular resolution, Coded aperture, 010303 astronomy & astrophysics, Image resolution, Physics, 010308 nuclear & particles physics, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Gamma ray, business
Abstract

The INTEGRAL X-ray monitor, JEM-X, (together with the two gamma ray instruments, SPI and IBIS) provides simultaneous imaging with arcminute angular resolution in the 3-35 keV band. The good angular resolution and low energy response of JEM-X plays an important role in the detection and identification of gamma ray sources as well as in the analysis and scientific interpretation of the combined X-ray and gamma ray data. JEM-X is a coded aperture X-ray telescope consisting of two identical detectors. Each detector has a sensitive area of 500 cm2, and views the sky through its own coded aperture mask. The coded masks are located 3.4 m above the detector windows. The detector field of view is constrained by X-ray collimators (6.6° FOV, FWHM).

Published
2004

2. TopHat series of top mounted balloon-borne telescopes

Author

Michael Amato, Rene Engel Kristansen, Mark Frigaard, Josef Polny, Joseph A. Generie, Richard E. Dame, Mark A. McGinnis, Neil R.W. Martin, Rodger Farley, and Matthew M. Buchko

Subjects
Cryostat, Telescope, Physics, Pathfinder, law, Launched, Cassegrain reflector, TopHat, Gimbal, Secondary mirror, Remote sensing, law.invention
Abstract

We describe the engineering design and operational concept for a series of three complementary top mounted balloon- borne experiments to measure the Cosmic Microwave Background Radiation anisotropy, culminating in a two week circumpolar flight from McMurdo Station, Antarctica. Each experiment is designed to provide a maximum science return in addition to acting as a pathfinder to the successor flights of top- mounted balloon-borne experiments. The experiment program, named TopHat, will involve the launch and operation of the first far-infrared and microwave telescope flown entirely from the top of a 28 million cubic foot balloon. It utilizes a two axis gimbal pointing system, a one meter Cassegrain optical system with a chopping secondary mirror, and a 3He evaporation cryostat designed to maintain a bolometer detector temperature of 0.25 K for 30 days without cycling. The series of flights will begin with an engineering test flight scheduled for launch in July 1996 from Palestine, Texas, followed by a pointing experiment to be flown from Ft. Sumner, New Mexico in April 1997. A spinning experiment will be launched from Ft. Sumner in April 1998 and Antarctica in December 1998.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Published
1996

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