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Viewing the sun as an X-ray star
Advances in Space Research, 2003Abstract The Sun is the late-type star we can study with the highest level of detail. In the interpretation of stellar data, therefore, it is often assumed that the physical processes of the coronae of late-type stars are similar to those of the solar corona, i.e. the “solar-stellar analogy”.
Orlando, S. +2 more
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Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002
More than two years of observation with Chandra and XMM-Newton has provided a rich harvest of new results on the physics of stellar coronae and winds. High-resolution X-ray spectroscopy in particular has opened new windows to the structure, the dynamics and the composition of stellar atmospheres.
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More than two years of observation with Chandra and XMM-Newton has provided a rich harvest of new results on the physics of stellar coronae and winds. High-resolution X-ray spectroscopy in particular has opened new windows to the structure, the dynamics and the composition of stellar atmospheres.
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Astronomy Reports
The basic properties of Be stars and X-ray binary systems containing these stars are considered. In the vast majority of these systems the Be stars' companions are neutron stars accreting matter from the decretion disk of a rapidly rotating Be star. The observed properties of such systems are studied within the framework of the hypothesis that
A. V. Fedorova, A. V. Tutukov
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The basic properties of Be stars and X-ray binary systems containing these stars are considered. In the vast majority of these systems the Be stars' companions are neutron stars accreting matter from the decretion disk of a rapidly rotating Be star. The observed properties of such systems are studied within the framework of the hypothesis that
A. V. Fedorova, A. V. Tutukov
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The British Journal of Radiology, 1930
There is a celebrated toast, “Here's to Pure Mathematics! And may they never be of any use to anybody!” It is a pious wish which has small hope of ever being fulfilled. However high-mindedly the devotee may strive to follow knowledge for its own sake uninfluenced by motives of practical utility his results have a way of turning out to be useful in ...
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There is a celebrated toast, “Here's to Pure Mathematics! And may they never be of any use to anybody!” It is a pious wish which has small hope of ever being fulfilled. However high-mindedly the devotee may strive to follow knowledge for its own sake uninfluenced by motives of practical utility his results have a way of turning out to be useful in ...
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X-Ray Observations of Active Chromosphere Stars
Space Science Reviews, 1985HD3196 = 13 Cet α, HD30495 = 58 Eri and HD32918 have been detected as new late-type soft X-ray sources. HD32918 is a member of the FK Com class.
D.K. Bedford, K.H. Elliott, C.J. Eyles
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Physica Scripta, 1984
Most stars emit X-rays. The hot X-ray emitting gas is not gravitationally bound to the star, but is magnetically confined in loops. It is generally assumed that rotation in convective stars relates to magnetic field generation. The X-ray intensity correlates with the rotation rate of the star.
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Most stars emit X-rays. The hot X-ray emitting gas is not gravitationally bound to the star, but is magnetically confined in loops. It is generally assumed that rotation in convective stars relates to magnetic field generation. The X-ray intensity correlates with the rotation rate of the star.
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T Tauri Stars: The X-ray Connection
Astrophysics and Space Science, 1998The launch of ROSAT opened a new era in the study of T Tauri stars. Prompted by the IUE results, the new X-ray data confirms the existence of extremely high levels of activity in these young stars, very likely of magnetic nature. We address a detailed analysis of the star TW Hya in the X-ray spectral range.
V. M. Costa, M. T. V. T. Lago
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X-ray emission from Be star/X-ray binaries
Space Science Reviews, 1994Observations of X-ray emission from Be star/X-ray binaries are reviewed. Some optical characteristics of these binaries are also presented. Theoretical aspects pertaining to the X-ray emissions are given.
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The Sun as an X-Ray Star: Overview of the Method
Solar Physics, 1997We present a method to study the solar-stellar connection, i.e., the close similarity of the physical phenomena occurring on the Sun and on late-type active stars, by taking advantage of Yohkoh/SXT X-ray images. From such images, we first find the distributions of the whole disk differential emission measure, and from them we then synthesize spectra ...
G. PERES +4 more
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Cooling of neutron stars and X-ray observations
Space Science Reviews, 1981Cooling of neutron stars is calculated using an exact stellar evolution code. The full general relativistic version of the stellar structure equations are solved, with the best physical input currently available. For neutron stars with a stiff equation of state, we find that the deviation from the isothermality in the interior is significant and that ...
Ken’ichi Nomoto, Sachiko Tsuruta
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