X-ray spectroscopy of stellar coronae

@article{Mewe1991XraySO,
  title={X-ray spectroscopy of stellar coronae},
  author={Rolf Mewe},
  journal={The Astronomy and Astrophysics Review},
  year={1991},
  volume={3},
  pages={127-168}
}
  • R. Mewe
  • Published 1 June 1991
  • Physics
  • The Astronomy and Astrophysics Review
SummaryFrom the early discovery in 1948 of X-rays from the Solar corona, X-ray spectroscopy has proven to be an invaluable tool in studying hot astrophysical and laboratory plasmas. Because the emission line spectra and continua from optically thin plasmas are fairly well known, high-resolution X-ray spectroscopy has its most obvious application in the measurement of optically thin sources such as the coronae of stars. In particular X-ray observations with theEINSTEIN observatory have… 

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References

SHOWING 1-10 OF 106 REFERENCES

X-ray spectra of Orion OB supergiants

The spectra are at a higher energy resolution than earlier X-ray observations of OB supergiants, and this allows stronger constraints to be placed on the location of the emission source in the outer

Solar and stellar coronal loops

Stellar coronae—Evidence for their existence from X- and UV observations

Stellar coronae were among the first predicted X-ray sources. Because of their relatively low X-ray luminosities, however, they have been discovered only during the last few years.In the present

Sub-arcsecond observations of the solar X-ray corona

SOFT X-ray observations are recognized as the best way to study the solar corona, as they are largely free of contaminating emission from other temperature regimes. They provide the only available

Outer atmospheres of cool stars. IX - A survey of ultraviolet emission from F-K dwarfs and giants with IUE

Low-dispersion ultraviolet spectra (1150-2000 A) of a representative sample of cool stars, including dwarfs and giants of spectral types F-K, obtained with the IUE, are examined. The observation and

X-ray emission from stellar coronae

SummaryStars of nearly all spectral types and luminosity classes are surrounded by tenuous high-temperature (T≈106-107K) coronae, which emit most of their radiation in the soft X-ray part of the

Nonradiative Activity across the H-R Diagram - which Types of Stars are Solar-Like

Major advances in our understanding of nonradiatively heated outer atmospheric layers (coronae, transition regions, and chromospheres) and other solar-like activity in stars has occurred in the past

Results from an extensive Einstein stellar survey.

We report the preliminary results of the Einstein Observatory stellar X-ray survey. To date, 143 soft X-ray sources have been identified with stellar counterparts, leaving no doubt that stars in

Impulsive phase of flares in soft X-ray emission

Observations using the Bent Crystal Spectrometer instrument on the Solar Maximum Mission show that turbulence and blue-shifted motions are characteristic of the soft X-ray plasma during the impulsive

High spectral resolution observations of the coronal X-ray emission from the RS CVn binary Sigma Corona Borealis

The results of high-resolution observations of the RS CVn binary star Rho Cr B are reported. The observations were carried out using the Focal Plane Crystal Spectrometer (FPCS) onboard the Einstein
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