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7 papers · 2 filters
Correlation between X-ray Lightcurve Shape and Radio Arrival Time in the Vela Pulsar
A. Lommen, J. Donovan, C. Gwinn +6
We report the results of simultaneous observations of the Vela pulsar in X-rays and radio from the RXTE satellite and the Mount Pleasant Radio Observatory in Tasmania. We sought co…
A Survey of 56 Mid-latitude EGRET Error Boxes for Radio Pulsars
F. Crawford, M. S. E. Roberts, J. W. T. Hessels +4
We have conducted a radio pulsar survey of 56 unidentified gamma-ray sources from the 3rd EGRET catalog which are at intermediate Galactic latitudes (5 deg. < |b| < 73 deg.). For e…
The Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis
D. R. Lorimer, A. J. Faulkner, A. G. Lyne +11
[ABRIDGED] We present the discovery and follow-up observations of 142 pulsars found in the Parkes 20-cm multibeam pulsar survey of the Galactic plane. These new discoveries bring t…
Galactic Abundance Patterns via Peimbert Types I & II Planetary Nebulae
J. B. Milingo, K. B. Kwitter, R. B. C. Henry +1
Planetary Nebulae (PNe) abundance patterns have long been used to note signatures of nuclear processing and to trace the distribution of metals throughout galaxies. We present abun…
The Sulfur Abundance Anomaly in Planetary Nebulae
R. B. C. Henry, J. N. Skinner, K. B. Kwitter +1
The failure of S and O abundances in most planetary nebulae to display the same strong direct correlation that is observed in extragalactic H II regions represents one of the most…
The Parallax and Proper Motion of PSR J0030+0451
Andrea N. Lommen, Richard A. Kipphorn, David J. Nice +3
We report the parallax and proper motion of millisecond pulsar J0030+0451, one of thirteen known isolated millisecond pulsars in the disk of the Galaxy. We obtained more than 6 yea…