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Star Survives Supernova

This spectacular image exposes the leftovers of a Supernova and comprises inside it a story of outstanding survival; a star that endured being nearer to one of the utmost prevailing explosions in the cosmos than we are to the sun, and will one day suffer a related experience itself. The image pools data composed by the Chandra X-Ray Observatory (purple) and earth based telescopes. This specific relic, recognized as DEM L241 is of interest both because the explosion was so fresh the gasses flung off stay hot enough to be a bright X-ray emitter, and since a likely partner star has been spotted, only the third such case known. Davies, Elliot and Meaburn charted DEM L241 in 1976, with its title booked from the primary letters of theirs. In 2012 Fredrick Seward of the Smithsonian Astrophysical Observatory spotted an object that is perky in both the X-Ray part of the spectrum and in observable light and seems to circle the supernova leftover once each ten days. This was decided to be an O-type star that survived the supernova detonation.
Image Credit: X-ray: NASA/CXC/SAO/F.Seward et al; Optical: NOAO/CTIO/MCELS, DSS

For the supernova originator to burn out before its partner it must have been greater, having a mass as a minimum 25 times that of the sun and utmost possibly around 40 times. Seward's paper writes, “It is therefore possible that the compact object, which we have assumed to be a neutron star, could actually be a black hole.” Fascinatingly, all recognized black holes are whichever at least 50 times brighter than this object, or further than a 100 times dimmer in the X-Ray spectrum. If the object at the core of DEM L241 is actually a black hole it will be the first detected to fill this huge brightness cavity. The dynamics of the arrangement mean that the partner star would be dropping mass to the black hole or neutron star it circles. However, the partner is so huge that even with this loss of mass it will finally experience a supernova detonation itself. Once this happens the system will be prepared of both two neutron stars in orbit about each other, one neutron star circling a black hole, or even two black holes in orbiting each other, creating a kind of celestial Scylla and Charybdis for upcoming Ulysses to route around.

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