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6 papers · 1 filter
Recoil corrections in the hydrogen isoelectronic sequence
G. S. Adkins, J. Sapirstein
A version of the Bethe-Salpeter equation appropriate for calculating recoil corrections in highly charged hydrogenlike ions is presented. The nucleus is treated as a scalar particl…
The young, highly relativistic binary pulsar J1906+0746
D. R. Lorimer, I. H. Stairs, P. C. C. Freire +33
We report the discovery of PSR J1906+0746, a young 144-ms pulsar in a highly relativistic 3.98-hr orbit with an eccentricity of 0.085 and expected gravitational wave coalescence ti…
Concordance of actions on
Michael McCooey
We consider locally linear Z_p x Z_p actions on the four-sphere. We present simple constructions of interesting examples, and then prove that a given action is concordant to its li…
Arecibo timing and single-pulse observations of 17 pulsars
D. J. Champion, D. R. Lorimer, M. A. McLaughlin +6
We report on timing and single-pulse observations of 17 pulsars discovered at the Arecibo observatory. The highlights of our sample are the recycled pulsars J1829+2456, J1944+0907…
Analytic evaluation of the amplitudes for orthopositronium decay to three photons to one-loop order
Gregory S. Adkins
The matrix element for the decay of orthopositronium to three photons can be expressed in terms of three independent amplitudes. We describe the analytic evaluation of these amplit…
Optical spectroscopy of trivalent chromium in sol-gel lithium niobate
J. K. Krebs, U. Happek
We report on the characterization of sol-gel derived lithium niobate via trivalent chromium probe ions, a study that is motivated by recent reports on the synthesis of high quality…