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- The Ohio State UniversityUS39 papers
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4 papers · 1 filter
X-ray Pulsars in the Small Magellanic Cloud
W. A. Majid, R. C. Lamb, D. J. Macomb
XMM-Newton archival data for the Small Magellanic Cloud have been examined for the presence of previously undetected X-ray pulsars. One such pulsar, with a period of 202 s, is dete…
The Quantum Content of the Normal Surfaces in a Three-Manifold
Charles Frohman, Joanna Kania-Bartoszynska
The formula for the Turaev-Viro invariant of a 3-manifold depends on a complex parameter t. When t is not a root of unity, the formula becomes an infinite sum. This paper analyzes…
The combinatorics of Borel covers
Marion Scheepers, Boaz Tsaban
In this paper we extend previous studies of selection principles for families of open covers of sets of real numbers to also include families of countable Borel covers. The main re…
Three New Long Period X-ray Pulsars Discovered in the Small Magellanic Cloud
D. J. Macomb, D. W. Fox, R. C. Lamb +1
The Small Magellanic Cloud is increasingly an invaluable laboratory for studying accreting and isolated X-ray pulsars. We add to the class of compact SMC objects by reporting the d…