RX J0513.1+0851 AND RX J0539.9+0956: TWO YOUNG, RAPIDLY ROTATING SPECTROSCOPIC BINARY STARS

Radio Observations of Two Isolated Neutron Stars , RX J 0720 . 4 – 3125 and RX J 0806 . 4 – 4132

Radio observations of two isolated neutron stars, RX J0720.4–3125 and RX J0806.4– 4132, have been made with the Australia Telescope Compact Array at a frequency of 1.4 GHz. No continuum emission is detected from either object with a 3-σ upper limit of 0.2 mJy. The data were also folded synchronously with the known rotation periods of 8.4 and 11.4 s respectively. No pulsed emission was detected....

Modeling Rapidly Rotating Stars

We review the quest of modeling rapidly rotating stars during the past 40 years and detail the challenges to be taken up by models facing new data from interferometry, seismology, spectroscopy... We then present the progress of the ESTER project aimed at giving a physically self-consistent model for the structure and evolution of rapidly rotating stars.

Gravitational waves from hot young rapidly rotating neutron stars

Benjamin J. Owen, Lee Lindblom, Curt Cutler, Bernard F. Schutz, Alberto Vecchio, and Nils Andersson Theoretical Astrophysics 130-33, California Institute of Technology, Pasadena, California 91125 Max Planck Institute for Gravitational Physics, Schlaatzweg 1, D-14473 Potsdam, Germany Institute for Astronomy and Astrophysics, University of Tübingen, D-72076 Tübingen, Germany ~Received 20 April 19...

Rx: forgiveness.

Binary words avoiding xx^Rx and strongly unimodal sequences

In previous work, Currie and Rampersad showed that the growth of the number of binary words avoiding the pattern xxx R was intermediate between polynomial and exponential. We now show that the same holds for the growth of the number of binary words avoiding the pattern xx R x. Curiously, the analysis for xx R x is much simpler than that for xxx R. We derive our results by giving a bijection bet...