The all-sky distribution of 511 keV electron-positron annihilation emission (2007)
Knödlseder, J., Jean, P., Lonjou, V., Weidenspointner, G., Guessoum, N., Gillard, W., ...
We present a map of 511 keV electron-positron annihilation emission, based on data accumulated with the SPI spectrometer aboard ESA's INTEGRAL gamma-ray observatory, that covers approximately 95% of...
Soft gamma-ray galactic ridge emission as unveiled by SPI aboard INTEGRAL (2007)
Knödlseder, J., Lonjou, V., Weidenspointner, G., Jean, P., Strong, A., Diehl, R., ...
Effects of the gas content on the gamma-ray emission from the galactic bulge (2007)
Gillard, W., Lonjou, V., Ferrière, K., Jean, P., Moskalenko, I. V., Strong, A.
Weidenspointner, G., Shrader, C. R., Knoedlseder, J., Jean, P., Lonjou, V., Guessoum, N., ...
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 only sky region from...
Spectral analysis of the Galactic e+e- annihilation emission (2005)
Jean, P., Knodlseder, J., Gillard, W., Guessoum, N., Ferriere, K., Marcowith, A., ...
We present a spectral analysis of the e+e- annihilation emission from the Galactic Centre region based on the first year of measurements made with the spectrometer SPI of the INTEGRAL mission. We...
The all-sky distribution of 511 keV electron-positron annihilation emission (2005)
Knödlseder, J., Jean, P., Lonjou, V., Weidenspointner, G., Guessoum, N., Gillard, W., ...
We present a map of 511 keV electron-positron annihilation emission, based on data accumulated with the SPI spectrometer aboard ESA's INTEGRAL gamma-ray observatory, that covers approximately 95% of...
Lonjou, V., Knodlseder, J., Roques, J. P., Skinner, G. K., Von Ballmoos, P., Jean, P., ...
The status of the SPI energy calibration after the first year of INTEGRAL operations is reported. We have studied the gain variations and we have demonstrated that the most important parameter is the...
INTEGRAL/IBIS search for e-e+ annihilation radiation from the Galactic Center Region (2005)
De Cesare, G., Bazzano, A., Capitanio, F., Del Santo, M., Lonjou, V., Natalucci, L., ...
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. We have analyzed...
INTEGRAL SPI limits on electron-positron annihilation radiation from the galactic plane (2005)
Teegarden, B. J., Watanabe, K., Jean, P., Knödlseder, J., Lonjou, V., Roques, J. P., ...
The all-sky distribution of 511 keV electron-positron annihilation emission (2005)
Knödlseder, J., Jean, P., Lonjou, V., Weidenspointner, G., Guessoum, N., Gillard, W., ...
A mystery of the galactic bulge: SPI observations of positron annihilation (2005)
Weidenspointner, G., Knödlseder, J., Jean, P., Lonjou, V., Von Ballmoos, P., Harris, M., ...
Lonjou, V., Weidenspointner, G., Knodlseder, J., Jean, P., Allain, M., Von Ballmoos, P., ...
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 Galactic Center Deep...
INTEGRAL/SPI Limits on Electron-Positron Annihilation Radiation from the Galactic Plane (2004)
Teegarden, B. J., Watanabe, K., Jean, P., Knodlseder, J., Lonjou, V., Roques, J. P., ...
The center of our Galaxy is a known strong source of electron-positron 511-keV annihilation radiation. Thus far, however, there have been no reliable detections of annihilation radiation outside of...
Weidenspointner, G., Lonjou, V., Knoedlseder, J., Jean, P., Allain, M., Von Ballmoos, P., ...
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 status of our analysis...
Al(26) Studies with INTEGRAL's Spectrometer SPI (2004)
Diehl, R., Kretschmer, K., Lichti, G., Schönfelder, V., Strong, A. W., Von Kienlin, A., ...
Al(26) radioactivity traces recent nucleosynthesis throughout the Galaxy, and is known to be produced in massive stars and novae. The map from its decay gamma-ray line suggests massive stars to...
6 Al studies with INTEGRAL's spectrometer SPI (2004)
Diehl, R., Kretschmer, K., Lichti, G., Schönfelder, V., Strong, A. W., Kienlin, A. Von, ...
Status of the 511 keV line from the Galactic Centre region (2004)
Jean, P., Ballmoos, P. Von, Knödlseder, J., Lonjou, V., Weidenspointner, G., Skinner, G. K., ...
The first year of INTEGRAL/SPI : Status of 511 KEV positron annihilation line observations (2004)
Weidenspointner, G., Lonjou, V., Knödlseder, J., Jean, P., Allain, M., Von Ballmoos, P., ...
Early SPI/INTEGRAL measurements of galactic 511 keV line emission from positron annihilation (2003)
Jean, P., Knoedlseder, J., Lonjou, V., Allain, M., Skinner, G. K., ...
We report the first measurements of the 511 keV line emission from the Galactic Centre (GC) region performed with the spectrometer SPI on the space observatory INTEGRAL (International Gamma-Ray...
Knodlseder, J., Lonjou, V., Jean, P., Allain, M., Mandrou, P., ...
We provide first constraints on the morphology of the 511 keV line emission from the galactic centre region on basis of data taken with the spectrometer SPI on the INTEGRAL gamma-ray observatory. The...
First identification and modelling of SPI background lines (2003)
Weidenspointner, G., Kiener, J., Gros, M., Jean, P., Teegarden, BJ., Wunderer, C., ...
First identification and modelling of SPI background lines (2003)
Weidenspointner, G., Kiener, J., Gros, M., Jean, P., Teegarden, BJ., Wunderer, C., ...
First identification and modelling of SPI background lines (2003)
Weidenspointner, G., Kiener, J., Gros, M., Jean, P., Teegarden, BJ., Wunderer, C., ...
On Oct. 17, 2002, the ESA INTEGRAL observatory was launched into a highly elliptical orbit. SPI, a high resolution Ge spectrometer covering an energy range of 20-8000 keV, is one of its two main...
SPI instrumental background characteristics (2003)
Jean, P., Vedrenne, G., Roques, J.P., Schonfelder, V., Teegarden, B.J., Von Kienlin, A., ...
In its space environment the INTEGRAL observatory is subject to an intense irradiation by energetic cosmic-ray particles that leads, via nuclear interactions with the telescope and spacecraft...
Early SPI/INTEGRAL measurements of 511 keV line emission from the 4th quadrant of the Galaxy (2003)
Jean, P., Knödlseder, J., Lonjou, V., Allain, M., Skinner, G. K., ...
SPI instrumental background characteristics (2003)
Jean, P., Vedrenne, G., Roques, J. P., Schönfelder, V., Teegarden, B. J., Kienlin, A. Von, ...
First identification and modelling of SPI background lines (2003)
Weidenspointner, G., Kiener, J., Gros, M., Jean, P., Teegarden, BJ., Wunderer, C., ...
On Oct. 17, 2002, the ESA INTEGRAL observatory was launched into a highly elliptical orbit. SPI, a high resolution Ge spectrometer covering an energy range of 20-8000 keV, is one of its two main...
SPI instrumental background characteristics (2003)
Jean, P., Vedrenne, G., Roques, J.P., Schonfelder, V., Teegarden, B.J., Von Kienlin, A., ...
In its space environment the INTEGRAL observatory is subject to an intense irradiation by energetic cosmic-ray particles that leads, via nuclear interactions with the telescope and spacecraft...
First identification and modelling of SPI background lines (2003)
Weidenspointner, G., Kiener, J., Gros, M., Jean, P., Teegarden, BJ., Wunderer, C., ...
On Oct. 17, 2002, the ESA INTEGRAL observatory was launched into a highly elliptical orbit. SPI, a high resolution Ge spectrometer covering an energy range of 20-8000 keV, is one of its two main...
SPI instrumental background characteristics (2003)
Jean, P., Vedrenne, G., Roques, J.P., Schonfelder, V., Teegarden, B.J., Von Kienlin, A., ...
In its space environment the INTEGRAL observatory is subject to an intense irradiation by energetic cosmic-ray particles that leads, via nuclear interactions with the telescope and spacecraft...