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Primordial Rotating Disk Composed of ≥15 Star Forming Clumps at Cosmic Dawn
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Philosophy of Science, 2018
AbstractGravitational interactions allowed astronomers to conclude that dark matter rings all luminous galaxies in gigantic halos, but this only accounts for a fraction of the total mass of dark matter believed to exist. Where is the rest? We hypothesize that some of it resides in dark galaxies, pure dark matter halos that either never possessed or ...
Michael Weisberg +3 more
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AbstractGravitational interactions allowed astronomers to conclude that dark matter rings all luminous galaxies in gigantic halos, but this only accounts for a fraction of the total mass of dark matter believed to exist. Where is the rest? We hypothesize that some of it resides in dark galaxies, pure dark matter halos that either never possessed or ...
Michael Weisberg +3 more
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Publications of the Astronomical Society of the Pacific, 1992
Current ideas on the amount, distribution, and nature of dark matter in galaxies are reviewed. Observations indicate that dark halos around most, if not all, galaxies. Recent evidence suggests that many dwarf galaxies have higher dark-matter fractions than normal galaxies as well as higher central dark-matter densities.
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Current ideas on the amount, distribution, and nature of dark matter in galaxies are reviewed. Observations indicate that dark halos around most, if not all, galaxies. Recent evidence suggests that many dwarf galaxies have higher dark-matter fractions than normal galaxies as well as higher central dark-matter densities.
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Dark Halo Scaling from Galaxy-Galaxy Lensing
1997The determination of the mass profile in galaxies is usually dependent on the presence of dynamical tracers like stars or neutral gas. The current view of the mass distribution in galaxies implies the existence of a dark halo which extends far beyond the radius at which dynamical tracers can be observed.
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New Astronomy Reviews, 1998
Abstract In this paper we examine the ensemble properties of a sample of eight double quasars classified as probable or certain gravitational lenses, and conclude that there is overwhelming evidence that the systems are indeed being gravitationally lensed by dark galaxies or perhaps dark matter galactic halos.
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Abstract In this paper we examine the ensemble properties of a sample of eight double quasars classified as probable or certain gravitational lenses, and conclude that there is overwhelming evidence that the systems are indeed being gravitationally lensed by dark galaxies or perhaps dark matter galactic halos.
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Dark Matter and Elliptical Galaxy Dynamics
Proceedings of the International Astronomical Union, 2009The halos of elliptical galaxies, through their orbit and angular momentum distribution, contain important information about the formation and evolution of these systems.
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1989
By the mid-1970s it was clear that something was definitely wrong. Not only was there matter in clusters of galaxies that we couldn’t see, but there were also indications that we weren’t seeing some of the matter of individual galaxies. Our own galaxy was no exception.
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By the mid-1970s it was clear that something was definitely wrong. Not only was there matter in clusters of galaxies that we couldn’t see, but there were also indications that we weren’t seeing some of the matter of individual galaxies. Our own galaxy was no exception.
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The dark side of galaxy formation
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002I discuss the discovery of a population of extremely luminous, but very dusty and very distant, galaxies in the submillimetre (submm) waveband. Almost all the light emitted by the stars in these galaxies is absorbed by interstellar dust (which is produced by the same stars) and re-radiated in the far-infrared.
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