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- Goddard Space Flight CenterUS262 papers
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4 papers · 1 filter
Objective Subclass Determination of Sloan Digital Sky Survey Unknown Spectral Objects
David Bazell, David J. Miller, Mark SubbaRao
We analyze a portion of the SDSS photometric catalog, consisting of approximately 10,000 objects that have been spectroscopically classified into stars, galaxies, QSOs, late-type s…
Discovery of Rapid X-ray Oscillations in the Tail of the SGR 1806-20 Hyperflare
GianLuca Israel, Tomaso Belloni, Luigi Stella +7
We have discovered rapid Quasi Periodic Oscillations (QPOs) in RXTE/PCA measurements of the pulsating tail of the 27th December 2004 giant flare of SGR 1806-20. QPOs at about 92.5H…
Pulsars and Their Nebulae as EGRET Sources
Mallory S. E. Roberts
At the end of the EGRET mission, only 6-8 Galactic sources had been identified as young pulsars. Since then, several energetic pulsars have been discovered in EGRET error boxes alo…
The Herbig Ae star HD 163296 in X-rays
Douglas A. Swartz, Jeremy J. Drake, Ronald F. Elsner +5
Chandra X-ray imaging spectroscopy of the nearby Herbig Ae star HD 163296 at 100 AU angular resolution is reported. A point-like, soft (kT~0.5 keV), emission-line source is detecte…