Impossibly bright dead star: X-ray source in the Cigar Galaxy is the first ultraluminous pulsar ever detected

8 octubre 2014

Astronomers working with NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) have found a pulsating dead star beaming with the energy of about 10 million suns. The object, previously thought to be a black hole because it is so powerful, is in fact a pulsar — the incredibly dense rotating remains of a star.