
TY  - JOUR
A1  - Crouch, A 
A1  - Melrose, DB 
T1  - Effect of synchtrotron losses on multiple diffusive shock acceleration
JF  - Publications of the Astronomical Society of Australia
JO  - Publ. Astron. Soc.  Aust.
Y1  - 1997
VL  - 14
IS  - 3
SP  - 251
EP  - 257
KW  - 
UR  - https://doi.org/10.1071/AS97251 
N2  - The effect of synchrotron losses on diffusive shock acceleration (DSA) at many shocks is treated numerically. Synchrotron losses determine a maximum energy to which electrons can be accelerated through DSA, and this is referred to as the synchrotron cutoff, p_c. The distribution of accelerated electrons after many shocks is found (a) for a distribution injected at the initial shock, to tend to a plateau (f(p) independent of p <~ 0.1 p_c), and (b) for the cumulative distribution from injection at each shock to tend to f(p) proptional to p^-b with b approximately 3 well below the synchrotron cutoff with a peak in the slope (b_min approx 2) at p <~ 0.1 p_c. It is suggested that the latter result might account for the flat synchrotron spectra observed in some Galactic Centre sources. 
ER  -

