EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 508 / No 1 (December II 2009) A&A, 508 1 (2009) 1-7 Full HTML
Free Access

   

Table 1:

Main gamma-ray lines expected from the GC region

Line energy 		Nuclear FWHMa Fluxa
(MeV) Transition (keV) cm-2 s-1

0.718 		10B *0.718 $\rightarrow$ g.s.b 30 $3.4\times10^{-6}$
0.847 56Fe *0.847 $\rightarrow$ g.s. 6 $1.4\times10^{-6}$
  27Al *0.844 $\rightarrow$ g.s.    
1.809 26Mg *1.809 $\rightarrow$ g.s. <2.7c $3.5\times10^{-7}$
  (26Al decay)    
4.44 12C *4.439 $\rightarrow$ g.s. 160 $1.2\times10^{-5}$
  11B *4.445 $\rightarrow$ g.s.    
$\sim $5.2 14N *5.106 $\rightarrow$ g.s. 280 $5.4\times10^{-6}$
  15O *5.181 $\rightarrow$ g.s.    
  15O *5.241 $\rightarrow$ g.s.    
  15N *5.270 $\rightarrow$ g.s.    
  15N *5.299 $\rightarrow$ g.s.    
$\sim $6.2 16O *6.130 $\rightarrow$ g.s. 180d $1.0\times10^{-5}$
  15O *6.176 $\rightarrow$ g.s.    
  15N *6.324 $\rightarrow$ g.s.    

a For $E_{\rm esc}=100$ MeV nucleon-1 and $\sigma =0.05 E_{\rm esc}$(see Eq. (4)). The fluxes are for the region of angular radius $\theta =5^\circ $ (see Fig. 3 for fluxes at 4.44 and $\sim $6.2 MeV calculated for lower values of $\theta$). b Ground state. c Assuming thermal broadening with T<10 keV. d A very narrow line component at 6.129 MeV could arise from excitation of 16O nuclei contained in micrometer-sized grains (see text).


Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.