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Continuum energy distribution of quasars: Shapes and origins
Continuum observations from ~0.3 nm to 6 cm (10^(9.7)-10^(18) Hz) are presented for 109 bright quasars from the Palomar-Green (PG) survey. Two-thirds of the quasars have been detected in the infrared
Radio emission from the unusual supernova 1998bw and its association with the γ-ray burst of 25 April 1998
Data accumulated over the past year strongly favour the idea that γ-ray bursts lie at cosmological distances, although the nature of the power source remains unclear. Here we report radio
Ion-supported tori and the origin of radio jets
While apparently supplying tremendous power to their extended radio-emitting regions, the nuclei of most radio galaxies emit little detectable radiation. It is proposed that at the centre of each is
Discovery of Extended Blue Horizontal Branches in Two Metal-rich Globular Clusters*
We have used WFPC2 to construct B, V color-magnitude diagrams of four metal-rich globular clusters, NGC 104 (47 Tuc), NGC 5927, NGC 6388, and NGC 6441. All four clusters have well populated red
The Afterglow of massive black hole coalescence
The final merger of a pair of massive black holes in a galactic nucleus is compelled by gravitational radiation. Gravitational waves from the mergers of black holes of masses 105-107(1 + z)-1 M☉ at
The Rate of Neutron Star Binary Mergers in the Universe: Minimal Predictions for Gravity Wave Detectors
Of the many sources which gravitational wave observatories might see, merging neutron star binaries are the most predictable. Their waveforms at the observable frequencies are easy to calculate. And
Pulsars as probes of newtonian dynamical systems
  • E. Phinney
  • Physics
    Philosophical Transactions of the Royal Society…
  • 15 October 1992
The orbits of binary pulsars in the authors' own Galaxy show evidence for the fluctuations which the fluctuation-dissipation theorem implies should occur during the dissipative tidal circularization of orbits, and newtonian dynamical effects may soon add irrefutable confirmation to recent observations suggesting that some pulsars are surrounded by planetary systems similar to their own.
A young star cluster is a less contrived explanation than a massive black hole for many of the features seen in the Galactic center. However from a Copernican point of view, this explanation is less
Binary and Millisecond Pulsars
Most of the ~600 known pulsars are single and located in the disk of our Galaxy. There is circumstantial evidence that the pulsars in this majority are created in supernova (SN) explosions, by the
Binary stars in a globular cluster (hereafter, GC) may be primordial (i.e. formed along with the cluster), or the result of cluster dynamics. “Dynamical” binaries can result from conservative