We study the formation of singularities for the Euler-alignment system with influence function
ψ
=
k
α
|
x
|
1
+
α
\psi =\frac {k_\alpha }{|x|^{1+\alpha }}
in 1D. As in [Commun. Math. Sci. 17 (2019), pp. 1779–1794] the problem is reduced to the analysis of a nonlocal 1D equation. We show the existence of singularities in finite time for any
α
\alpha
in the range
0
>
α
>
2
0>\alpha >2
in both the real line and the periodic case and with just a point of vacuum.
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