- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 21 to 30 of 704 (0.026 seconds)| 21 |
Observations of the water maser emission associated with Cepheus ARowland, P. R. January 1986 (has links)
No description available.
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Gamma-rays and active galaxiesbattersby, Stephen Joseph Richard January 1995 (has links)
No description available.
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Visibility and the selection of galaxiesDavies, J. I. January 1989 (has links)
No description available.
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The solar neighbourhood and centre of the Milky WayChakrabarty, Dalia January 2000 (has links)
No description available.
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High-speed photometry of compact x-ray binariesHomer, Lee January 1998 (has links)
No description available.
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A polarisation study of spiral galaxiesWard-Thompson, Derek January 1987 (has links)
Optical polarimetry results are presented for four spiral galaxies: NGC 5194 (M51), NGC 1068, NGC 4565 and NGC 4594 (Ml04). M51 and NGC 1068 show spiral polar isation patterns which are interpreted as indicating a spiral magnetic field in each case. NGC 4565 and M104 show polar isations in their dust lanes which are parallel to their galactic planes, and which are interpreted in terms of a magnetic field in the plane of each. It is hypothesised that the observed magnetic fields may be linked to galactic shocks. A discussion of the origin of galactic magnetic fields concludes that there is no evidence which necessitates a primordial magnetic field.
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The evolution of disk galaxies in cold dark matter halosFont, Andreea S. 10 April 2008 (has links)
No description available.
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Investigating the Andromeda stream : a simple analytic bulge-disk-halo model for M31Geehan, Jonathan James 10 April 2008 (has links)
No description available.
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Observing dark in the galactic spectrum?Lawson, Kyle 05 1900 (has links)
Observations from a broad range of astrophysical scales have forced us to the realization that the well understood matter comprising the stars and galaxies we see around us accounts for only a small fraction of the total mass of the Universe. An amount roughly five times larger exist in the form of dark matter about which we have virtually no direct evidence apart from its large scale gravitational effects. It is also known that the largest contribution to the energy density of the universe is the dark energy, a negative pressure form of energy which will not be dealt with here.
I will present a candidate for the dark matter which is based completely in known physics and which presents several possible observational signatures. In this model the dark matter is composed of dense nuggets of baryonic matter and antimatter in a colour superconducting state. If these object are sufficiently massive their low number density will make them effectively dark in the sense that collisions with visible matter become infrequent. This work presents the basics of dark matter as a colour superconductor and then uses the physical properties of the quark nuggets to extract observational consequences.
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The equilibrium structure of cosmological halos and the effects of feedback on cosmological structure formation /Iliev, Ilian Tzankov, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 275-286). Available also in a digital version from Dissertation Abstracts.
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