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Land of the SuperGiants December 14, 2005

Posted by jtintle in Deep Space, European Space Agency, HEAPOW, Illustration, INTEGRAL observatory, Space Fotos, University of Alicante-Spain.
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INTEGRAL lightcurve of an SXRB transient and artist's impression of one systemCredit: I. Negueruela (University of Alicante, Spain) and artist’s impression C. Carreau (ESA).

In massive binaries one star dies before the other, leaving behind a lonely, massive companion and a neutron star. Because of the high mass of such systems, even the tremendous explosive power of a supernovae can’t break the gravitational bonds binding the companions together. Such systems, schematically represented in the artist’s impression above, can be hard to find, since the X-ray emission which usually identifies the presence of a neutron star can be absorbed by the dense expanding atmosphere of the companion. But observations at higher X-ray energies by the INTEGRAL observatory are helping astronomers to complete the census of such “super-giant” X-ray binaries. The X-ray lightcurve shown in the inset is an example of the variability such systems can exhibit.

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Comments

1. megan - February 11, 2007

do you have any real pictures of supergiants. Because this isnt a lot of pictures!


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