Results 181 to 190 of about 10,228 (215)
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Physics Reports, 1986
Abstract The observational evidence for stellar magnetic fields is reviewed. A detailed theoretical discussion of fields in the chemically peculiar stars of the middle main sequence is given, contrasting the rival claims of the fossil and contemporary dynamo theories for the origin of the field.
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Abstract The observational evidence for stellar magnetic fields is reviewed. A detailed theoretical discussion of fields in the chemically peculiar stars of the middle main sequence is given, contrasting the rival claims of the fossil and contemporary dynamo theories for the origin of the field.
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Magnetic Fields in Planet-Hosting Stars
2017The stellar magnetic field is a prime ingredient in the interactions between a parent star and its planets. Impacts on the stellar surface or dynamo as well as on the planetary atmosphere and internal structure are expected from these interactions. The magnetic field also plays a huge role in the formation and evolution of the system.
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Buried Magnetic Field in Accreting Neutron Star
Astrophysics and Space Science, 1998The evolution of the neutron star magnetic field is correlated to the accretion physical process in the binary X-ray phase. It is assumed that the original strong magnetic field is buried by the accreted materials, which is on account of the ferromagnetic physical property of the accreted matter.
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1958
General magnetic fields of the order of one gauss are known to exist at the surfaces of the Earth and the Sun, and general fields of the order of a few thousand gauss have been observed in the reversing layers of a certain small proportion of stars. In sunspots, fields of order two thousand gauss are commonly observed.
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General magnetic fields of the order of one gauss are known to exist at the surfaces of the Earth and the Sun, and general fields of the order of a few thousand gauss have been observed in the reversing layers of a certain small proportion of stars. In sunspots, fields of order two thousand gauss are commonly observed.
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Mapping a Star's Magnetic Field
Science, 1997Astronomers have enlisted a continent-wide array of radio telescopes to make the first map of the magnetic field around a star other than our sun. The map, constructed by measuring the polarization of radio waves from clouds of excited gas around the red giant star, suggests that its magnetic field has roughly the same shape as the fields of Earth and ...
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Binary stars and magnetic fields
EAS Publications Series, 2004We examine the effect of binary companions and magnetic fields on stellar evolution. Today our understanding of the former is good though far from complete. We single out common envelope evolution as the least satisfactory and illustrate the effects of our lack of knowledge on the population synthesis of type Ia supernovae. We currently fare much worse
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Magnetic Fields and Star Formation
1994Theory pioneered by Mestel, and now quite well established by later theory and observation, has led to a picture of magnetically mediated star formation but left us with difficult problems: understanding the origin and maintenance of the turbulence that supports dense clouds, and understanding the topology of the magnetic fields in clouds.
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Magnetic Fields of Degenerate Stars
Annual Review of Astronomy and Astrophysics, 1992Magnetic fields are ubiquitous in the universe and were known over three decades ago to range from 1 J.LG in interstellar space up to about 30,000 G in nondegenerate magnetic stars (Parker 1 979). The possible existence of even stronger magnetic fields in white dwarfs was suggested earlier by Blackett (1 947), who proposed that the magnetic moment, J.
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1982
The study of the behavior of matter in strong magnetic fields is of fundamental importance and has motivated the development of fields in the laboratory. Steady fields of the order 104 gauss can be obtained by using ferromagnets, and those of the order of 105 gauss by using superconducting coils. Pulsed magnetic fields of approximately 106 gauss can be
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The study of the behavior of matter in strong magnetic fields is of fundamental importance and has motivated the development of fields in the laboratory. Steady fields of the order 104 gauss can be obtained by using ferromagnets, and those of the order of 105 gauss by using superconducting coils. Pulsed magnetic fields of approximately 106 gauss can be
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