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9 papers · 1 filter
No skew branes on non-degenerate hyperquadrics
Ji-Ping Sha, Bruce Solomon
We show that non-degenerate hyperquadrics in R^{n+2} admit no skew branes. Stated more traditionally, a compact codimension-one immersed submanifold of a non-degenerate hyperquadri…
Time Domain Explorations With Digital Sky Surveys
A. A. Mahabal, S. G. Djorgovski, M. J. Graham +17
One of the new frontiers of astronomical research is the exploration of time variability on the sky at different wavelengths and flux levels. We have carried out a pilot project us…
Three Years of ChaMPlane Northern Field WIYN Spectroscopy
A. B. Rogel, P. M. Lugger, H. N. Cohn +4
We present initial results of WIYN spectroscopic observations of selected objects detected in the Chandra Multiwavelength Plane (ChaMPlane) Survey in fields towards the Galactic an…
Low-energy neutrino beams with an upgraded Fermilab proton driver
S. J. Brice, S. Geer, K. Paul +1
The beam properties of low-energy neutrino beams that would be possible at an upgraded 2 MW Fermilab 8 GeV Proton Source are described. In particular three options are considered;…
Harmonicity of quasiconformal measures and Poisson boundaries of hyperbolic spaces
Chris Connell, Roman Muchnik
We consider a group G of isometries acting on a (not necessarily geodesic) delta-hyperbolic space X and possessing a radial limit set of full measure within its limit set. For any…
Exploring the Time Domain with the Palomar-QUEST Sky Survey
A. Mahabal, S. G. Djorgovski, M. J. Graham +16
Exploration of the time variability on the sky over a broad range of flux levels and wavelengths is rapidly becoming a new frontier of astronomical research. We describe here brief…