Coronal physics and the chandra emission line project
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Universidad Nacional Autónoma de México
2000
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| _version_ | 1876455958035562496 |
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| author | N. S. Brickhouse |
| author_facet | N. S. Brickhouse |
| contents | Coronal physics and the chandra emission line project N. S. Brickhouse J. J. Drake Física, Astronomía y Matemáticas TYPE HR 1099 PROCYON) ATOMIC DATA STARS: LATE With the launch of the Chandra X-ray Observatory, high resolution X-rayspectroscopy of cosmic sources has begun. Early, deep observations of three stellarcoronal sources|Capella, Procyon, and HR 1099|are providing not only invaluablecalibration data, but also benchmarks for plasma spectral models. These modelsare needed to interpret data from stellar coronae, galaxies and clusters of galax-ies, supernova remnants and other astrophysical sources. They have been calledinto question in recent years as problems with understanding low resolution ASCAand moderate resolution EUVE data have arisen. The Emission Line Project is acollaborative e ort to improve the models, with Phase 1 being the comparison ofmodels with observed spectra of Capella, Procyon, and HR 1099. Goals of thesecomparisons are (1) to determine and verify accurate and robust diagnostics and(2) to identify and prioritize issues in fundamental spectroscopy which will requirefurther theoretical and/or laboratory work. A critical issue in exploiting the coronaldata for these purposes is to understand the extent to which common simplifyingassumptions (coronal equilibrium, negligible optical depth) apply. We will discussrecent advances in our understanding of stellar coronae in this context. 2000 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57100907 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.9 |
| format | Artículo científico |
| id | redalyc_57100907 |
| institution | Redalyc |
| language | en |
| publishDate | 2000 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Coronal physics and the chandra emission line project N. S. Brickhouse Física, Astronomía y Matemáticas TYPE HR 1099 PROCYON) ATOMIC DATA STARS: LATE Coronal physics and the chandra emission line project N. S. Brickhouse J. J. Drake Física, Astronomía y Matemáticas TYPE HR 1099 PROCYON) ATOMIC DATA STARS: LATE With the launch of the Chandra X-ray Observatory, high resolution X-rayspectroscopy of cosmic sources has begun. Early, deep observations of three stellarcoronal sources|Capella, Procyon, and HR 1099|are providing not only invaluablecalibration data, but also benchmarks for plasma spectral models. These modelsare needed to interpret data from stellar coronae, galaxies and clusters of galax-ies, supernova remnants and other astrophysical sources. They have been calledinto question in recent years as problems with understanding low resolution ASCAand moderate resolution EUVE data have arisen. The Emission Line Project is acollaborative e ort to improve the models, with Phase 1 being the comparison ofmodels with observed spectra of Capella, Procyon, and HR 1099. Goals of thesecomparisons are (1) to determine and verify accurate and robust diagnostics and(2) to identify and prioritize issues in fundamental spectroscopy which will requirefurther theoretical and/or laboratory work. A critical issue in exploiting the coronaldata for these purposes is to understand the extent to which common simplifyingassumptions (coronal equilibrium, negligible optical depth) apply. We will discussrecent advances in our understanding of stellar coronae in this context. 2000 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57100907 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.9 |
| title | Coronal physics and the chandra emission line project |
| topic | Física, Astronomía y Matemáticas TYPE HR 1099 PROCYON) ATOMIC DATA STARS: LATE |
| url | https://www.redalyc.org/articulo.oa?id=57100907 |