Early SPI/INTEGRAL constraints on the morphology of the 511 keV line emission in the 4th galactic quadrant
/ Authors
J. Knödlseder, V. Lonjou, P. Jean, M. Allain, P. Mandrou, J. Roques, G. Skinner, G. Vedrenne, P. Ballmoos, G. Weidenspointner
and 5 more authors
G. Weidenspointner, P. Caraveo, B. Cordier, V. Schönfelder, B. Teegarden
/ Abstract
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 data suggest an azimuthally symmetric galactic bulge component with FWHMof 9 with a 2 uncertainty range covering 6 18. The 511 keV line flux in the bulge component amounts to 9:9 +4:7
Journal: Astronomy and Astrophysics