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The Swift gamma-ray burst mission
TLDR
The Swift mission, scheduled for launch in 2004, is a multiwavelength observatory for gamma-ray burst astronomy. Expand
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Tidal disruption of stars by black holes of 106–108 solar masses in nearby galaxies
Stars in galactic nuclei can be captured or tidally disrupted by a central black hole. Some debris would be ejected at high speed', the remainder would be swallowed by the hole, causing a brightExpand
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Radiative Transfer in a Clumpy Universe. III. The Nature of Cosmological Ionizing Sources
The history of the transition from a neutral intergalactic medium (IGM) to one that is almost fully ionized can reveal the character of cosmological ionizing sources. We study the evolution of theExpand
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Massive black hole binaries in active galactic nuclei
Most theoretical discussions of active galactic nuclei (including quasars) attribute their energy production either to an accreting black hole or to a precursor stage—for instance a dense starExpand
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Dynamical effects of the cosmological constant.
The possibility of measuring the density parameter OMEGA-0 and the cosmological constant lambda-0 = LAMBDA/(3H0(2)) using dynamical tests is explored in linear and non-linear theory. In linear theoryExpand
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21 CENTIMETER TOMOGRAPHY OF THE INTERGALACTIC MEDIUM AT HIGH REDSHIFT
We investigate the 21 cm signature that may arise from the intergalactic medium (IGM) prior to the epoch of full reionization (z > 5). In scenarios in which the IGM is reionized by discrete sourcesExpand
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Optical and long wavelength afterglow from gamma-ray bursts
We discuss the evolution of cosmological gamma-ray burst remnants, consisting of the cooling and expanding fireball ejecta together with any swept-up external matter, after the gamma-ray event. WeExpand
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Reionization of the Inhomogeneous Universe
A model of the density distribution in the intergalactic medium (IGM), motivated by that found in numerical simulations, is used to demonstrate the effect of a clumpy IGM and discrete sources on theExpand
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