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2017
This chapter examines the next four novels in Gregory Benford's Galactic Center series: Great Sky River (1987), Tides of Light (1989), Furious Gulf (1992), and Sailing Bright Eternity (1995). The novels span vast expanses of spacetime and nine years of Benford's career.
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This chapter examines the next four novels in Gregory Benford's Galactic Center series: Great Sky River (1987), Tides of Light (1989), Furious Gulf (1992), and Sailing Bright Eternity (1995). The novels span vast expanses of spacetime and nine years of Benford's career.
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The Galactic Center in the IR — VLT Infrared Observations of the Galactic Center
1997The ISAAC system at the ESO VLT (Very Large Telescope) UT1 telescope has been used to image the central stellar cluster of the Milky Way in the mid-infrared L- and M-band (3.3 µm and 4.6 µm), with a field of view of 72.6″×72.6″.These obsevations were part of a program to monitor the MIR flux density at the position of Sgr A* and were carried out ...
T. Viehmann +3 more
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Triaxiality and the Galactic center
AIP Conference Proceedings, 1982We investigate the properties of triaxial galaxies (those without axial symmetry) relevant to observations and inferred physical processes at the Galactic center. The features we find are: (1) velocity fields which mimic that of a supermassive object at the center and appear to decline more steeply with radius than Keplerian at larger radii, (2) the ...
George R. Lake, Colin Norman
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1989
Over the last two decades, the refinement of radio and infrared techniques, as well as work in space, have provided a remarkable amount of information about the center of our galaxy. Much of it fits into a more or less understandable and increasingly well-defined pattern.
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Over the last two decades, the refinement of radio and infrared techniques, as well as work in space, have provided a remarkable amount of information about the center of our galaxy. Much of it fits into a more or less understandable and increasingly well-defined pattern.
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Massive stars in the galactic center
New Astronomy Reviews, 2000We review quantitative spectroscopic studies of massive stars in the Galactic Center clusters. Thanks to the impressive evolution of IR detectors an the new generation of line blanketed models for the extended atmospheres of hot stars we are able to accurately derive the physical properties of the massive stars in these clusters.
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1988
Deciphering the morphology and kinematics of the galactic center constitutes one of the enduring programs of the study of galactic structure. This is especially true for radio astronomy, which was the first of the astronomical sciences to penetrate the mysteries of the galactic center, but radio-frequency observations alone cannot provide more than a ...
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Deciphering the morphology and kinematics of the galactic center constitutes one of the enduring programs of the study of galactic structure. This is especially true for radio astronomy, which was the first of the astronomical sciences to penetrate the mysteries of the galactic center, but radio-frequency observations alone cannot provide more than a ...
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Publications of the Astronomical Society of Japan, 1985
Abstract Radio continuum observations of the central region of our Galaxy have revealed an off-plane, Ω-shaped lobe (the galactic center lobe: GCL) with a diameter 200 pc emerging from the nuclear disk toward the positive galactic latitude. The radio spectrum is flat, indicating either a thermal gas origin or synchrotron radiation due to
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Abstract Radio continuum observations of the central region of our Galaxy have revealed an off-plane, Ω-shaped lobe (the galactic center lobe: GCL) with a diameter 200 pc emerging from the nuclear disk toward the positive galactic latitude. The radio spectrum is flat, indicating either a thermal gas origin or synchrotron radiation due to
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2017
This chapter examines Nigel Walmsley's space odyssey in In the Ocean of Night and Across the Sea of Suns, which span the dates from 1999 to 2061. By the end of the first novel, Nigel has discovered a cosmic struggle between machine intelligence and organic life that will soon engulf Earth. Through several contacts with alien artifacts and entities that
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This chapter examines Nigel Walmsley's space odyssey in In the Ocean of Night and Across the Sea of Suns, which span the dates from 1999 to 2061. By the end of the first novel, Nigel has discovered a cosmic struggle between machine intelligence and organic life that will soon engulf Earth. Through several contacts with alien artifacts and entities that
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1987
The last few years have produced large and rapid advances in our understanding of the galactic center. New information has come via a variety of methods, including high spatial resolution radio and infrared continuum mapping, and line observations in the micron through centimeter wavelength range.
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The last few years have produced large and rapid advances in our understanding of the galactic center. New information has come via a variety of methods, including high spatial resolution radio and infrared continuum mapping, and line observations in the micron through centimeter wavelength range.
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