![Figure 8](a4q-1fpp_T0-a4q-1fpp_T4.png)
Figure 8: Upper panel: the probability distribution for the orbital parameters of the NS + NS binaries
with
day at the moment of birth. The darkest shade corresponds to a birthrate of
. Lower panel: the probability distribution for the present-day orbital parameters
of the Galactic disc NS + NS binaries younger than 10 Gyr. The grey scaling represents numbers in
the Galaxy. The darkest shade corresponds to 1100 binaries with given combination of
and
.
![Porb ≤ 104](article638x.gif)
![1.2 × 10−5 yr−1](article639x.gif)
![Porb](article640x.gif)
![e](article641x.gif)