Skywatch

  • November 22, 2012

    Episode 422: X-ray Nova Discovered by Swift

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    NASA’s Swift satellite has detected another interesting X-ray burst. This one seems to be in the direction of the center of our galaxy. The burst was followed by dimming in the X-ray wavelength and a brightening in the lower energies. This type of emission is typical of a binary star with a black hole. A disk of material from the star periodically accumulates around the black hole before it plummets into it.