recreation of a drawing I saw somewhere

recreate.py

# coding: utf-8
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.colors import Normalize

def recreate(n=8000, s=5, scale=1.45, ymax=.68):
    
    norm = Normalize(vmin=0, vmax=1, clip=True)

    origin = np.array([.5, 0])
    X = np.random.random((n, 2))
    dst = np.linalg.norm(X-origin, axis=1) * scale
    plt.scatter(X[:,0], X[:,1], c=dst, cmap='gist_rainbow_r', norm=norm, s=s, alpha=.8)
    plt.xlim([0,1])
    plt.ylim([0,ymax])
    plt.show()
    
recreate()