| Autor: |
Maeda, Y., Baganoff, F. K., Feigelson, E. D., Bautz, M. W., Brandt, W. N., Burrows, D. N., Doty, J. P., Garmire, G. P., Morris, M., Pravdo, S. H., Ricker, G. R., Townsley, L. K. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2001, Vol. 565 Issue 1, p177, 4p |
| Abstrakt: |
We report on the X-ray emission from the shell-like, non-thermal radio source Sgr A East (SNR 000.0+00.0). The X-ray emitting region is concentrated within the central ≃ 2 pc of the larger radio shell. The spectrum shows strong Kα lines from highly ionized ions of S, Ar, Ca, and Fe. The plasma appears to be rich in heavy elements, over-abundant by roughly a factor of four with respect to solar abundances, and shows a spatial gradient of elemental abundance: the spatial distribution of iron is more compact than that of the lighter elements. The X-ray properties support the longstanding hypothesis that Sgr A East is an old supernova remnant (SNR). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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