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15 papers · 1 filter
The origin and evolution of cluster magnetism
A. Shukurov, K. Subramanian, N. E. L. Haugen
Random motions can occur in the intergalactic gas of galaxy clusters at all stages of their evolution. Depending on the poorly known value of the Reynolds number, these motions can…
Power series coefficients for probabilities in finite classical groups
John R. Britnell, Jason Fulman
It is shown that a wide range of probabilities and limiting probabilities in finite classical groups have integral coefficients when expanded as a power series in 1/q. Moreover it…
Vortex signatures in annular Bose-Einstein condensates
M. Cozzini, B. Jackson, S. Stringari
We consider a Bose-Einstein condensate confined in a ``Mexican hat'' potential, with a quartic minus quadratic radial dependence. We find conditions under which the ground state is…
A new look at anomaly cancellation in heterotic -theory
Ian G Moss
This paper considers anomaly cancellation for eleven-dimensional supergravity on a manifold with boundary and theories related to heterotic -theory. The Green-Schwarz mechanism…
On the Performance of Turbo Codes in Quasi-Static Fading Channels
M. R. D. Rodrigues, I. Chatzigeorgiou, I. J. Wassell +1
In this paper, we investigate in detail the performance of turbo codes in quasi-static fading channels both with and without antenna diversity. First, we develop a simple and accur…
Magnetic fields in barred galaxies. IV. NGC 1097 and NGC 1365
R. Beck, A. Fletcher, A. Shukurov +5
We present 3.5cm and 6.2cm radio continuum maps in total and polarized intensity of the barred galaxies NGC 1097 and NGC 1365. Both galaxies exhibit radio ridges roughly overlappin…