Early SPI / INTEGRAL measurements of 511 keV line emission from the 4 th quadrant of the Galaxy ⋆
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چکیده
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 Astrophysics Laboratory). Taking into account the range of spatial distribution models which are consistent with the data, we derive a flux of 9.9
منابع مشابه
Early SPI / INTEGRAL constraints on the morphology of the 511 keV line emission in the 4 th galactic quadrant ⋆
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 FWHM of ∼ 9◦ with a 2σ uncertainty range covering 6◦ − 18◦. The 511 keV line flux in the bulge component amounts to 9.9 −2.1 × 10...
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تاریخ انتشار 2003