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Supergiant Fast X-ray Transient Binaries are Actually Quite Common in Our Galaxy

Posted by Guy Pirro 08/09/2018 03:05AM

Supergiant Fast X-ray Transient Binaries are Actually Quite Common in Our Galaxy

Supergiant Fast X-ray Transients (SFXTs) are a baffling type of X-ray binary system discovered with ESA’s INTEGRAL space telescope. These binaries were first noticed because of their occasional flare-ups in the X-ray portion of the spectrum. The transient activity, which lasts only a few hours, enhances the brightness of these otherwise very faint sources dramatically. Over the years, INTEGRAL has discovered numerous SFXTs. Previously thought to be extremely rare, it turns out that these are actually quite common in our galaxy.


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