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- Goddard Space Flight CenterUS50 papers
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41 papers · 1 filter
Beauville surfaces and finite groups
Yolanda Fuertes, Gareth Jones
Extending results of Bauer, Catanese and Grunewald, and of Fuertes and González-Diez, we show that Beauville surfaces of unmixed type can be obtained from the groups L_2(q) and SL_…
An algorithmic approach to Dold-Puppe complexes
Ramesh Satkurunath, Bernhard Köck
A Dold-Puppe complex is the image NFΓ(C.) of a chain complex C. under the composition of the functors Γ, F and N where Γand N are given by the Dold-Kan correspondence and F is a no…
On the derived functors of the third symmetric-power functor
Bernhard Köck, Ramesh Satkurunath
We compute the derived functors of the third symmetric-power functor and their cross-effects for certain values. These calculations match predictions by the first named author and…
The proper motion and changing jet morphology of Cygnus X-3
J. C. A. Miller-Jones, C. M. Sakari, V. Dhawan +4
We present analysis of 25 years' worth of archival VLA, VLBA and EVN observations of the X-ray binary Cygnus X-3. From this, we deduce the source proper motion, allowing us to pred…
Flavor symmetries, leptogenesis and the absolute neutrino mass scale
E. Bertuzzo, P. Di Bari, F. Feruglio +1
We study the interplay between flavor symmetries and leptogenesis in the case when the scale of flavor symmetry breaking is higher than the scale at which lepton number is violated…
Light scattering for thermometry of fermionic atoms in an optical lattice
J. Ruostekoski, C. J. Foot, A. B. Deb
We propose a method for measuring the temperature of fermionic atoms in an optical lattice potential from the intensity of the scattered light in the far-field diffraction pattern.…