170 citations · 597 across the 25 of their papers we have counts for
13 papers · 1 filter
GRI: focusing on the evolving violent Universe
Jürgen Knödlseder, Peter Von Ballmoos, Filippo Frontera +4
The Gamma-Ray Imager (GRI) is a novel mission concept that will provide an unprecedented sensitivity leap in the soft gamma-ray domain by using for the first time a focusing lens b…
The sky distribution of positronium annihilation continuum emission measured with SPI/INTEGRAL
G. Weidenspointner, C. R. Shrader, J. Knoedlseder +15
We present a measurement of the sky distribution of positronium (Ps) annihilation continuum emission obtained with the SPI spectrometer on board ESA's INTEGRAL observatory. The onl…
Astrophysical constraints from gamma-ray spectroscopy
Roland Diehl, Nikos Prantzos, Peter von Ballmoos
Gamma-ray lines from cosmic sources provide unique isotopic information, since they originate from energy level transitions in the atomic nucleus. Gamma-ray telescopes explored thi…
INTEGRAL/IBIS search for e-e+ annihilation radiation from the Galactic Center Region
G. De Cesare, A. Bazzano, F. Capitanio +5
Electron-positron annihilation radiation from the Galactic Center region has been detected since the seventies, but its astrophysical origin is still a topic of a scientific debate…
SPI observations of positron annihilation radiation from the 4th galactic quadrant: Spectroscopy
V. Lonjou, G. Weidenspointner, J. Knodlseder +13
The status of the analysis of the electron/positron annihilation radiation performed by INTEGRAL/SPI in the 4th GALACTIC QUADRANT is reported. We use data from the first two Galact…
SPI observations of positron annihilation radiation from the 4th galactic quadrant: sky distribution
G. Weidenspointner, V. Lonjou, J. Knoedlseder +14
During its first year in orbit the INTEGRAL observatory performed deep exposures of the Galactic Center region and scanning observations of the Galactic plane. We report on the sta…