Brightest Supernova in History

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An investigation, which has involved the National Research Council (CSIC), has discovered the origin of that until now considered the “brightest stellar event” that has been referred to in the story from the Earth , the supernova SN1006 held in 1006 to about 7,000 light years from Earth, the result of the merger of two white dwarfs, as published by the journal Nature on its cover.

Thus, the CSIC said that main event is classified as Type of Supernova, which are those generated by binary systems in which two astronomical objects are linked together by their gravitational pull. He also notes that the study estimated that the light emitted by SN1006 was equivalent to“a quarter” of the brightness of the moon , which would support the historical records of astrologers of the time indicate that the explosion was visible in different parts the world for “more than three years” and was “approximately” three times brighter than Venus.

On the other hand, explains that “usually” these systems usually consist of a white dwarf and a normal star that gives the material required to reach the “critical mass” of 1.4 times that of the Sun and, once achieved, the white dwarf begins merging its core causes a thermonuclear explosion. However, he pointed out that “it is also possible that the supernova originates because of the merger of two white dwarfs interconnected.”

For its part, the researcher of the Institute of Fundamental Physics CSIC Pilar Ruiz-Lapuente, who participated in this study, said that “the exploration around the place which saw the supernova SN1006 has not detected any candidate to partner original white dwarf, which invites us to think that probably occurred through the merger of two white dwarfs interconnected. ” Given this, the researcher of the Institute of Astrophysics of the Canary Islands Jonay Gonzalez, who led the work, has argued that “there are three types of stars in the region where the explosion took place, the giants, subgiants and dwarfs, but observations detected only four giant stars located at the same distance to the supernova remnant. “

While tracks

So, has argued that “the numerical simulations do not predict a mate of these characteristics, the qualities of a possible companion star.” In this sense, Ruiz-Lapuente stated that “after the supernova explosion, the companion star to the white dwarf is more akin to a helium star, but none of these was detected in the study area so that shows that the source was in the SN1006 collision of two white dwarfs , whose material was ejected without leaving any witnesses of the explosion. “

Finally, CSIC researcher noted that “to date had found some extragalactic supernovae that showed no sign of the presence of the companion star.” It therefore considers that these “new results, together with previous ones, assume that the merger of white dwarfs could be a usual way to give these violent thermonuclear explosions.” In 2004, Ruiz-Lapuente and led the research to find out the source of the supernova of the year 1572, where they found the star that accompanied the white dwarf star that caused this event.

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