Apr
10
2013

Suzaku ‘Post-mortem’ Yields Insight into Kepler’s Supernova

An exploding star observed in 1604 by the German astronomer Johannes Kepler held a greater fraction of heavy elements than the sun, according to an analysis of X-ray observations from the Japan-led Suzaku satellite. The findings will help astronomers better understand the diversity of type Ia supernovae, an important class of stellar explosion used in probing the distant universe.

Aug
02
2012

‘Cry’ of a Shredded Star Heralds a New Era for Testing Relativity

Last year, astronomers discovered a quiescent black hole in a distant galaxy that erupted after shredding and consuming a passing star. Now researchers have identified a distinctive X-ray signal observed in the days following the outburst that comes from matter on the verge of falling into the black hole.

Jul
03
2012

In McNeil’s Nebula, a Young Star Flaunts its X-ray Spots

Using combined data from a trio of orbiting X-ray telescopes, including NASA’s Chandra X-ray Observatory and the Japan-led Suzaku satellite, astronomers have obtained a rare glimpse of the powerful phenomena that accompany a still-forming star. A new study based on these observations indicates that intense magnetic fields drive torrents of gas into the stellar surface, where they heat large areas to millions of degrees. X-rays emitted by these hot spots betray the newborn star’s rapid rotation.

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