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  • 1
    Electronic Resource
    Electronic Resource
    GRAVITATIONAL RADIATION DETECTION EXPERIMENTS WITH DISC-SHAPED AND CYLINDRICAL ANTENNAE AND THE LUNAR SURFACE GRAVIMETER (1973)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 224 (1973), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1973.tb41443.x
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  • 2
    Electronic Resource
    Electronic Resource
    Astronomy: Classifying ourselves (1984)
    [s.l.] : Nature Publishing Group
    Nature 308 (1984), S. 407-408 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DECIDING just how normal or average our star and Galaxy are is of practical as well as philosophical interest. The assumption that ours is a normal galaxy of a particular type is now being used in efforts1 to pin down the extragalactic distance scale, the value of Hubbles's constant and the age of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/308407a0
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  • 3
    Electronic Resource
    Electronic Resource
    Gravitational radiation and the binary pulsar (1982)
    [s.l.] : Nature Publishing Group
    Nature 297 (1982), S. 357-358 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] GRAVITATIONAL radiation not only exists, but it is apparently also doing exactly what general relativity says it ought to, at least in the binary pulsar PSR1913 + 16. This is the conclusion drawn by J.H. Taylor and J.M. Weisberg writing recently in the Astrophysical Journal (253, 908; 1982). It ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/297357a0
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  • 4
    Electronic Resource
    Electronic Resource
    Supermassive Objects in Astrophysics (1971)
    [s.l.] : Nature Publishing Group
    Nature 232 (1971), S. 607-611 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The scientific interests of William A. Fowler cover an unusually wide range. The symposium held at the Institute of Theoretical Astronomy, Cambridge, on July 19 to 21, 1971, in honour of his sixtieth birthday was designed to explore some of the topics with which he has been concerned and the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/232607a0
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  • 5
    Electronic Resource
    Electronic Resource
    Supernovae (1981)
    [s.l.] : Nature Publishing Group
    Nature 293 (1981), S. 186-187 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SUPERNOVAE as a class of astronomical events releasing ^ 1049 ergs in visible light over a year or two were identified and defined by Fritz Zwicky and Walter Baade in 1934. A surprising amount of what they said then remains credible, including the division into Type I and Type II events (due, most ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/293186a0
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  • 6
    Electronic Resource
    Electronic Resource
    Globular clusters (1978)
    [s.l.] : Nature Publishing Group
    Nature 275 (1978), S. 12-13 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE globular clusters comprise the oldest stellar population readily available to us for study. They ought, therefore, to be able to provide the answers to various questions in galactic and stellar formation and evolution- if only we knew which questions to ask. The chief difficulty lies in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/275012a0
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  • 7
    Electronic Resource
    Electronic Resource
    Frequency of Events producing Pulsars (1969)
    [s.l.] : Nature Publishing Group
    Nature 221 (1969), S. 1038-1038 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The period of the Crab Nebula object is changing at a rate of about 1.35 105 s yr1 (ref. 2). Rates of change of period for longer period pulsars on the other hand are at most of the order of 107 s yr1 (refs. 3 and 4). This means that the rate of change of periods must be a decreasing function of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2211038a0
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  • 8
    Electronic Resource
    Electronic Resource
    How far the stars? (1999)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 400 (1999), S. 34-35 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] From Earth and Moon to Sun and stars and on to galaxies and the Universe, our view of the world has grown more or less monotonically throughout recorded history, (at least Western history). It is this expanding horizon that Kitty Ferguson has set out to map. Her chosen method is to focus on ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/21821
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  • 9
    Electronic Resource
    Electronic Resource
    The angular momentum-vs-mass relation and the distribution of mass ratios for visual binary systems (1986)
    Springer
    Astrophysics and space science 126 (1986), S. 243-253 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The investigation of the angular momentum vs mass relation for binary stars is completed with a study of the 847 systems contained in theFourth Catalog of Orbits of Visual Binary Stars. Because bothJ andM of a visual binary depend steeply on the distance to the system (5th and 3rd powers, respectively), and many of the distances are not well known, the study makes use of an auxiliary parameterR which is independent of distance and proportional toJM −5/3.R appears to be uncorrelated withM for the 789 systems for which both can be determined. The non-correlation implies thatJ ∝M 5/3, expected from Kepler's third law, provides a better fit to the visual binaries than doesJ ∝M 2, predicted by some more complex considerations. The distribution functionf(q=M 2/M1) of mass ratios for the visual binaries results as a byproduct of the investigation. It peaks extremely sharply towardq=1.0 (much more so than for spectroscopic binaries). Because most visual binaries are wide enough to consist of stars that condensed independently (and so that can be thought of as chosen at random from an initial mass function), one expects the realf(q) to rise toward low ratios. Observational selection against the discovery and study of systems with large magnitude differences between the components must be very large indeed to account for the discrepancy between expectation and observation. The alternative is a mechanism for formation of wide binaries that favours equal components. The distribution of mass ratios for eclipsing binaries is given in an appendix. It peaks strongly atq=0.6–0.75 and largely reflects processes of angular momentum, mass, and energy exchange between the stars in contact systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00639378
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  • 10
    Electronic Resource
    Electronic Resource
    The angular momentum-vs-mass relation for spectroscopic binaries (1984)
    Springer
    Astrophysics and space science 104 (1984), S. 133-143 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The spectroscopic binaries, considered as a single data point, fall roughly on the ‘universal’ power-law of index 1.8 for angular momentum vs total mass, as defined by planets, spiral galaxies, and numerous other objects. But the individual systems in theSeventh Catalogue of the Orbital Elements of Spectroscopic Binary Systems define a curve of rather shallower slope, 1.63±0.07, over more than two orders of magnitude in mass and four in angular momentum. Various subsets (long and short periods; single and double line systems; known and unknown orbital orientations) all yield slopes from 1.48 to 1.77. These values, as well as the slightly larger one found for eclipsing systems by Sisteró and Marton, are very much what one would expect, given the form of Kepler's Third Law and the Stellar mass-radius relation. If only these well-known pieces of physics are at work, then the still-wider visual binaries should yield a slope near 5/3. Catalogues currently in press will permit easy testing of this prediction. It seems unlikely that deep clues to the origin of either binary systems or angular momentum are to be found from considerations of this nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653998
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