SIMBAD references

The intermittent behavior of the space-scale distribution of the Lyα-transmitted flux of QSO HS 1700+64 has been analyzed via a discrete wavelet transform. We found that there are two strong indications of intermittency on scales down to about 10 h^–1 kpc: (1) the probability distribution function of the local fluctuations of the flux has a significantly long tail on small scales, and (2) the local power spectrum of the flux shows prominent spiky structures on small scales. Moreover, the local power spectrum, averaged on regions with different sizes, shows similar spiky structures. Therefore, the random mass density field traced by the Lyα forest is rougher on smaller scales, consistent with singular clustering.