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The Sloan Digital Sky Survey View of the Palomar-Green Bright Quasar Survey
We investigate the extent to which the Palomar-Green (PG) Bright Quasar Survey (BQS) is complete and representative of the general quasar population by comparing it with imaging and spectroscopy from
A Faint New Milky Way Satellite in Bootes
We announce the discovery of a new satellite of the Milky Way in the constellation of Bootes at a distance of ~60 kpc. It was found in a systematic search for stellar overdensities in the north
Rossby Wave Instability of Keplerian Accretion Disks
We find a linear instability of nonaxisymmetric Rossby waves in a thin nonmagnetized Keplerian disk when there is a local maximum in the radial profile of a key function (r)≡(r)S2/Γ(r), where
A Possible Cepheid-like Luminosity Estimator for the Long Gamma-Ray Bursts
We present a possible Cepheid-like luminosity estimator for the long gamma-ray bursts based on the variability of their light curves. To construct the luminosity estimator, we use CGRO/BATSE data for
X-Ray Observations of the Boundary Layer in Dwarf Novae at Low Accretion Rates
We present a spectral analysis of XMM-Newton data of 10 dwarf novae, 9 of which were observed during a quiescent state. The X-ray spectra indicate the presence of a hot, optically thin plasma with a
The propagation and eruption of relativistic jets from the stellar progenitors of gamma-ray bursts
New two- and three-dimensional calculations are presented of relativistic jet propagation and break out in massive Wolf-Rayet stars. Such jets are thought to be responsible for gamma-ray bursts. As
Precise constraints on the dark matter content of Milky Way dwarf galaxies for gamma-ray experiments
We examine the prospects for detecting {gamma}-rays from dark matter annihilation in the six most promising dwarf spheroidal (dSph) satellite galaxies of the Milky Way. We use recently measured
Relativistic O VIII Emission and Ionized Outflow in NGC 4051 Measured with XMM-Newton
We present XMM-Newton Reflection Grating Spectrometer observations of the soft X-ray spectrum of NGC 4051 and explore their implications for the inner accretion disk and ionized outflow in the active
Advanced burning stages and fate of 8-10 M⊙ STARS
The stellar mass range 8 {approx}< M/M{sub Sun} {approx}< 12 corresponds to the most massive asymptotic giant branch (AGB) stars and the most numerous massive stars. It is host to a variety of