Figure 1
From: Quasinormal modes and shadow of noncommutative black hole

The effective potential \(V_{eff}\) as function of the tortoise coordinate \(r_{*}\) (a) \(l = 1\) and (b) \(l = 2\).
From: Quasinormal modes and shadow of noncommutative black hole
The effective potential \(V_{eff}\) as function of the tortoise coordinate \(r_{*}\) (a) \(l = 1\) and (b) \(l = 2\).