Flowers of the Sky
Author : Richard Anthony Proctor
Publisher :
Page : 312 pages
File Size : 30,29 MB
Release : 1879
Category : Astronomy
ISBN :
Author : Richard Anthony Proctor
Publisher :
Page : 312 pages
File Size : 30,29 MB
Release : 1879
Category : Astronomy
ISBN :
Author :
Publisher :
Page : 638 pages
File Size : 48,39 MB
Release : 1913
Category : Assyriology
ISBN :
Author : Margherita Hack
Publisher :
Page : 432 pages
File Size : 49,79 MB
Release : 1993
Category : Cataclysmic variable stars
ISBN :
This volume begins with an introductory chapter on general properties of cataclysmic variables. Chapters 2 through 5 of Part 1 are devoted to observations and interpretation of dwarf novae and nova-like stars. Chapters 6 through 10, Part 2, discuss the general observational properties of classical and recurrent novae, the theoretical models, and the characteristics and models for some well observed classical novae and recurrent novae. Chapters 11 through 14 of Part 3 are devoted to an overview of the observations of symbiotic stars, to a description of the various models proposed for explaining the symbiotic phenomenon, and to a discussion of a few selected objects, respectively. Chapter 15 briefly examines the many unsolved problems posed by the observations of the different classes of cataclysmic variables and symbiotic stars.
Author : United States. National Aeronautics and Space Administration. Gamma Ray Astronomy Program Working Group
Publisher :
Page : 64 pages
File Size : 40,50 MB
Release : 1997
Category : Electronic government information
ISBN :
Author : C.G. Campbell
Publisher : Springer Science & Business Media
Page : 324 pages
File Size : 33,9 MB
Release : 2001-11-30
Category : Science
ISBN : 9781402003776
Magnetic stresses were discussed as a possible means of angular momentum transport in the development of accretion disc theory, in the late sixties and early seventies. Interest in the role of magnetic fields in close binary stars steadily increased after the discovery of the nature of AM Herculis in 1976. The observed lack of an accretion disc and the synchronous rotation of the white dwarf suggested strong magnetic effects, consistent with the high degree of optical polarization. Similar systems were soon discovered. Evidence for large magnetic fields was subsequently found in the X-ray binary pulsars and the intermediate polar binaries, both believed to include systems with partially disrupted accretion discs. A magnetically channelled wind from the main sequence secondary star has been invoked to explain the higher mass transfer rates observed in binaries above the period gap, and in an explanation of the gap. Magnetically influenced winds from accretion discs have been suggested as contributing to the inflow by removing angular momentum. Magnetism in binary stars is now an area of central importance in stellar astrophysics. Magnetic fields are believed to playa fundamental role even in apparently non-magnetic binaries. They provide the most viable means, through shear instabilities, of generating the turbulence in accretion discs necessary to drive the inflow via the resulting magnetic and viscous stresses.
Author : Friedrich Delitzsch
Publisher :
Page : 1120 pages
File Size : 42,82 MB
Release : 1913
Category : Assyriology
ISBN :
Author : George Aaron Barton
Publisher :
Page : 332 pages
File Size : 26,62 MB
Release : 1913
Category : Cuneiform inscriptions
ISBN :
Author :
Publisher : CUP Archive
Page : 924 pages
File Size : 28,88 MB
Release :
Category :
ISBN :
Author : Gudrun Wolfschmidt
Publisher : tredition
Page : 358 pages
File Size : 36,36 MB
Release : 2021-08-26
Category : Technology & Engineering
ISBN : 3347271068
'Computational History' derives history from data and nowadays, therefore, relies on the technologies of the digital humanities. 'Computational History of Science' addresses questions of history by evaluating historical data, e.g. for tracing back copying traditions and conclude on transfer and transformation of data and knowledge. The term 'Applied Historical Astronomy', in contrast, tries to address questions of contemporary science by evaluating historical data in comparison with most recent data. This opens new possibilities, e.g. in the search for stellar transients among historical data. In the contribution by Hoffmann & Vogt we will focus on the stellar transients among all the topics mentioned above. Philipp Protte discusses the accuracy of magnitudes and positions in ancient star catalogues, Andreas Schrimpf & Frank Verbunt present an analysis of an early modern star catalogue. Victor Reijs analyses the visibility of celestial objects for naked-eye observers, and Björn Kunzmann showcases some important variable stars in the history of astronomy. Rene Hudec presents astronomical photographic archives as a valuable data source for modern astrophysics. José M. Vaquero discusses the studies on solar observations made during the last four centuries. More technical are the contributions of Georg Zotti on Stellarium and Karsten Markus-Schnabel on data-mining and data-processing technologies. Ido Yavetz & Luca Beisel are developing a digital tool of computational history of science for the simulation of pre-modern astronomical models. Gerd Graßhoff focuses more on the application of computational history with regard to Kepler's Astronomia Nova while Tim Karberg presents an analysis of the astronomical orientation of buildings in the North Sudan.
Author :
Publisher :
Page : 1146 pages
File Size : 44,92 MB
Release : 1892
Category :
ISBN :