A revised sample of the 2 cm Very Long Baseline Array (VLBA) survey is studied to test the isotropic distribution of radio sources on the sky and their uniform distribution in space. The revised sample is complete to flux-density limits of 1.5 Jy for positive declinations and 2 Jy for 0 > δ > −20. At present the active galactic nuclei sample comprises 122 members. Application of the two-dimensi...

The metabolic networks are very well characterized for a large set of organisms, a unique case in within thelarge-scale biological networks. For this reason they provide a a very interesting framework for the construction of analytically tractable statistical mechanics models. In this paper we introduce a solvable model for the distribution of fluxes in the metabolic network. We show that the e...

The spatial distribution of magnetic flux in YBa2CY307, has been measured for various sinzered pellets and thin films. In ring-shaped samples macroscopic persistent currents have been observed. Tn discs, the penetration of the magnetic field bas been investigated, and in general qualitative agreement with the Bean model has been found. In some cases, however, pronounced deviations from the pred...

Observations from the Space Telescope Imaging Spectrograph define the flux of the DBQ4 star LDS749B from 0.12–1.0 μmwith an uncertainty of∼1% relative to the three pure hydrogen WD primary HST standards. With Teff = 13575 K, log g = 8.05, and a trace of carbon at <1×10 of solar, a He model atmosphere fits the measured STIS fluxes within the observational noise, except in a few spectral lines wi...

Flux penetration into type-II superconducting films is simulated for transverse applied magnetic field and flux creep dynamics. The films contain macroscopic nonconducting holes, and we introduce the holes in the simulation formalism by reconstruction of the magnetic field change inside the holes. We find that the holes induce a region of reduced flux density extending toward the nearest sample...

Narrow-band radio spikes have been recorded during a solar flare with unprecedented resolution. This unique example allows us to study the effect of low resolution in previously published peak-flux distributions of radio spikes. We give a general, analytical expression for how an actual peak-flux distribution is changed in shape if the peaks are determined with low temporal and/or frequency res...