Prof. Volker Schönfelder Profile

Prof. Volker Schönfelder

at Max-Planck-Institut für extraterrestrische Physik

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 11 October 2004 Paper

Paper

The GLAST burst monitor

Andreas von Kienlin, Charles Meegan, Giselher Lichti, Narayana Bhat, Michael Briggs, Valerie Connaughton, Roland Diehl, Gerald Fishman, Jochen Greiner, Andrew Hoover, R. Kippen, Chryssa Kouveliotou, William Paciesas, Robert Preece, Volker Schoenfelder, Helmut Steinle, Robert Wilson

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.552913

KEYWORDS: Sensors, Gamma radiation, Crystals, Photons, Space telescopes, Telescopes, Space operations, Satellites, Power supplies, Glasses

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Proceedings Article | 11 October 2004 Paper

Paper

Overview about first results from the Gamma-Ray Astronomy Mission INTEGRAL

Volker Schoenfelder

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.561561

KEYWORDS: Gamma radiation, Hard x-rays, Galactic astronomy, Gamma-ray astronomy, X-rays, Solar processes, Image resolution, Spectroscopy, Imaging spectroscopy, Binary data

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Proceedings Article | 11 March 2003 Paper

Paper

GBM: a gamma-ray burst monitor for GLAST

Giselher Lichti, Michael Briggs, Roland Diehl, Gerald Fishman, Richard Kippen, Chryssa Kouveliotou, Charles Meegan, William Paciesas, Robert Preece, Volker Schoenfelder, Andreas von Kienlin

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461174

KEYWORDS: Sensors, Crystals, Gamma radiation, Space operations, Space telescopes, Telescopes, Particles, Calibration, Time resolved spectroscopy, Astronomy

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Proceedings Article | 11 March 2003 Paper

Paper

Calibration of the spectrometer aboard the INTEGRAL satellite

Stephane Schanne, Bertrand Cordier, Maurice Gros, David Attie, Peter von Ballmoos, Laurent Bouchet, Raffaelo Carli, Paul Connell, Roland Diehl, Pierre Jean, Juergen Kiener, Andreas von Kienlin, Juergen Knoedlseder, Phillipe Laurent, Giselher Lichti, Pierre Mandrou, Jaques Paul, Philippe Paul, Jean-Pierre Roques, Filomeno Sanchez, Volker Schoenfelder, Chris Shrader, Gerald Skinner, Andrew Strong, Steven Sturner, Vincent Tatischeff, Bonnard Teegarden, Gilbert Vedrenne, Georg Weidenspointner, Cornelia Wunderer

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461604

KEYWORDS: Sensors, Calibration, Photons, Spectroscopy, Satellites, Germanium, Crystals, Energy efficiency, Sodium, X-rays

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Proceedings Article | 11 March 2003 Paper

Paper

Imaging with the coded aperture gamma-ray spectrometer SPI aboard INTEGRAL

Cornelia Wunderer, Andrew Strong, David Attie, Peter von Ballmoos, Paul Connell, Bertrand Cordier, Roland Diehl, J. Wolfgang Hammer, Pierre Jean, Andreas von Kienlin, Juergen Knoedlseder, Giselher Lichti, Pierre Mandrou, Jaques Paul, Philippe Paul, Victor Reglero, Jean-Pierre Roques, Filomeno Sanchez, Stephane Schanne, Volker Schoenfelder, Chris Shrader, Gerald Skinner, Steven Sturner, Bonnard Teegarden, Gilbert Vedrenne, Georg Weidenspointner

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461155

KEYWORDS: Sensors, Germanium, Calibration, Coded apertures, Gamma radiation, Reconstruction algorithms, Spectroscopy, Imaging systems, Coded aperture imaging, Detection and tracking algorithms

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Proceedings Article | 11 March 2003 Paper

Paper

Scientific expectations from the INTEGRAL spectrometer SPI

Volker Schoenfelder

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461734

KEYWORDS: Gamma radiation, Spectroscopy, Stars, Calcium, Imaging spectroscopy, Gamma-ray astronomy, Astronomy, Information operations, Spatial resolution, Image resolution

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Proceedings Article | 11 March 2003 Paper

Paper

Concept study for the next generation medium-energy gamma-ray astronomy mission: MEGA

Gottfried Kanbach, Robert Andritschke, Peter Bloser, Florian Schopper, Volker Schoenfelder, Andreas Zoglauer

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461348

KEYWORDS: Sensors, Telescopes, Space telescopes, Prototyping, Satellites, Silicon, Electronics, Gamma-ray astronomy, Gamma radiation, Astronomy

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Proceedings Article | 18 October 1996 Paper

Paper

Optimization of the veto shield for the INTEGRAL spectrometer SPI with Monte Carlo simulations

Robert Georgii, Giselher Lichti, Thomas Kirchner, Volker Schoenfelder, Peter von Ballmoos, Pierre Jean, Pierre Mandrou, Juan Naya, Gilbert Vedrenne, Bertrand Cordier, Nene Diallo

Proceedings Volume 2806, (1996) https://doi.org/10.1117/12.253982

KEYWORDS: Crystals, Monte Carlo methods, Spectroscopy, Particles, Germanium, Information operations, Sensors, Satellites, Absorption, Electrons

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Proceedings Article | 18 October 1996 Paper

Paper

Spectrometer SPI of the INTEGRAL mission

Giselher Lichti, Volker Schoenfelder, Roland Diehl, Robert Georgii, Thomas Kirchner, Gilbert Vedrenne, Pierre Mandrou, Peter von Ballmoos, Pierre Jean, Francis Albernhe, Philippe Durouchoux, Bertrand Cordier, Nene Diallo, Filomeno Sanchez, Pierre Leleux, Patricia Caraveo, Bonnard Teegarden, James Matteson, Robert Lin, Gerald Skinner, Paul Connell

Proceedings Volume 2806, (1996) https://doi.org/10.1117/12.253981

KEYWORDS: Spectroscopy, Sensors, Germanium, Crystals, Spatial resolution, Astronomy, Telescopes, Galactic astronomy, Spectroscopes, Stars

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INTEGRAL is ESA's high-energy astrophysics mission to be launched into a high eccentric orbit early in the next decade. One of the two mission's main telescopes is the gamma-ray spectrometer SPI. This instrument features a compact array of 19 high-purity germanium detectors shielded by a massive anticoincidence system. A coded aperture of the HURA type modulates the astrophysical signal. We present the spectrometer system and its characteristics and discuss the choices that led to the present design. The instrument properties like imaging capability, energy resolution and sensitivity have been evaluated by extensive Monte-Carlo simulations. The expected performance for narrow-line spectroscopy is characterized by an energy resolution of approximately 1.6 keV at 1 MeV, an angular resolution of approximately 2 degrees within a totally coded field of view of approximately 15 degrees, and a sensitivity of (2 - 5) multiplied by 10^-6 gamma/(cm² s) for 4 multiplied by 10⁶ s observation time in the nominal energy range from approximately 20 keV and approximately 8 MeV. With these characteristic features it will be possible for the first time to explore the gamma-ray sky in greater depth and detail than it was possible with previous gamma- ray telescopes like SIGMA, OSSE and COMPTEL. In particular the field of nuclear astrophysics will be addressed with an unprecedented combination of sensitivity and energy. Especially the high-energy resolution allows for the first time measuring gamma-ray line profiles. Such lines are emitted by the debris of nucleosynthesis processes, by the annihilation process near compact objects and by the nuclear interaction between cosmic rays and interstellar matter. Lines of all these processes have been measured so far, but, owing to the relatively poor energy resolution, details of the emission processes in the source regions could not be studied. With the high-resolution spectroscopy of SPI such detailed investigations will be possible opening a wealth of astrophysical investigations.

Proceedings Article | 18 October 1996 Paper

Paper

COMPTEL gamma-ray line analysis techniques

Juergen Knoedlseder, Peter von Ballmoos, Roland Diehl, U. Oberlack, Volker Schoenfelder, H. Bloemen, W. Hermsen, James Ryan, Kevin Bennett

Proceedings Volume 2806, (1996) https://doi.org/10.1117/12.254000

KEYWORDS: Data modeling, Reconstruction algorithms, Image restoration, Gamma radiation, Smoothing, Sensors, Space telescopes, Telescopes, Instrument modeling, Statistical analysis

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Proceedings Article | 1 November 1993 Paper

Paper

INTEGRAL: the next major gamma-ray astronomy mission?

Gerald Skinner, S. Bergeson-Willis, T. Courvoisier, Anthony Dean, Philippe Durouchoux, N. Eismont, Neil Gehrels, Jonathan Grindlay, William Mahoney, James Matteson, Brian McBreen, Oscar Pace, Thomas Prince, Volker Schoenfelder, Rashid Sunyaev, B. Swanenburg, Bonnard Teegarden, Pietro Ubertini, Gilbert Vedrenne, Gabriele Villa, Sergio Volonte, Christoph Winkler

Proceedings Volume 1945, (1993) https://doi.org/10.1117/12.158753

KEYWORDS: Gamma radiation, Sensors, Spectroscopy, Imaging spectroscopy, Space operations, X-rays, X-ray optics, Imaging systems, Gamma-ray astronomy, Spatial resolution

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Showing 5 of 11 publications

Conference Committee Involvement (2)

UV-Gamma Ray Space Telescope Systems

21 June 2004 | Glasgow, United Kingdom

X-ray and Gamma-ray Telescopes and Instruments for Astronomy

24 August 2002 | Waikoloa, Hawai'i, United States

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