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All-Sky Map of 511 keV Line Emission

All-Sky Map of 511 keV Line Emission

Date: 16 October 2007
Satellite: INTEGRAL
Depicts: Sky map of 511 keV electron-positron annihiliation emission line
Copyright: J. Knödlseder et al.

Sky map of the 511 keV gamma-ray line emission produced by electron-positron annihilation. The map is based on data that covers approximately 95% of the celestial sphere and was obtained with the SPI spectrometer. Contour levels indicate intensity levels of 10-2, 10-3, and 10-4 photons cm-2 s-1 sr-1 (from the centre outwards). The image is given in Galactic coordinates, with the Galactic Centre in the middle of the image. The emission is clearly centred on the Galaxy's central region.
Last Update: 1 September 2019
23-Sep-2023 08:40 UT

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