Hydrogen-Free Superluminous Supernovae: New Subclass of Stellar Explosions Found

According to an international group of astronomers, two unusual stellar explosions detected in 2006 and 2007 are a new subclass of superluminous supernova events.
This image shows the supernova SNLS-06D4eu and its host galaxy, arrow. The supernova and its host galaxy are so far away that both are a tiny point of light that cannot be clearly differentiated in this image. The large, bright objects with spikes are stars in our own galaxy. Every other point of light is a distant galaxy.
The two supernovae, dubbed SNLS 06D4eu and SNLS 07D2bv, are the brightest and most distant stellar explosions ever recorded.
They are located about 10 billion light-years away from Earth, and are about a hundred times more luminous than a normal supernova.
SNLS 06D4eu and SNLS 07D2bv are puzzling because the mechanism that powers most of supernovae – the collapse of a giant star to a black hole or normal neutron star – cannot explain their extreme luminosity.
Full Article


Image credit: University of California, Santa Barbara

Hydrogen-Free Superluminous Supernovae: New Subclass of Stellar Explosions Found

According to an international group of astronomers, two unusual stellar explosions detected in 2006 and 2007 are a new subclass of superluminous supernova events.

This image shows the supernova SNLS-06D4eu and its host galaxy, arrow. The supernova and its host galaxy are so far away that both are a tiny point of light that cannot be clearly differentiated in this image. The large, bright objects with spikes are stars in our own galaxy. Every other point of light is a distant galaxy.

The two supernovae, dubbed SNLS 06D4eu and SNLS 07D2bv, are the brightest and most distant stellar explosions ever recorded.

They are located about 10 billion light-years away from Earth, and are about a hundred times more luminous than a normal supernova.

SNLS 06D4eu and SNLS 07D2bv are puzzling because the mechanism that powers most of supernovae – the collapse of a giant star to a black hole or normal neutron star – cannot explain their extreme luminosity.

Full Article

Image credit: University of California, Santa Barbara


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