News tagged with white dwarfs

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Chandra Reveals Origin of Key Cosmic Explosions

( -- New findings from NASA's Chandra X-ray Observatory have provided a major advance in understanding a type of supernova critical for studying the dark energy that astronomers think pervades the universe. The ...

dateFeb 17, 2010 in Astronomy
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Ticking stellar time bomb identified (w/ Video)

( -- "One of the major problems in modern astrophysics is the fact that we still do not know exactly what kinds of stellar system explode as a Type Ia supernova," says Patrick Woudt, from the University of Cape ...

dateNov 17, 2009 in Astronomy
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Rapid supernova could be new class of exploding star

( -- An unusual supernova rediscovered in seven-year-old data may be the first example of a new type of exploding star, possibly from a binary star system where helium flows from one white dwarf onto another and ...

dateNov 05, 2009 in Astronomy
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XMM-Newton uncovers a celestial Rosetta stone

( -- ESA's XMM-Newton orbiting X-ray telescope has uncovered a celestial Rosetta stone: the first close-up of a white dwarf star, circling a companion star, that could explode into a particular kind of supernova ...

dateSep 03, 2009 in Astronomy
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World's observatories watching 'cool' star

The Whole Earth Telescope (WET), a worldwide network of observatories coordinated by the University of Delaware, is synchronizing its lenses to provide round-the-clock coverage of a cooling star. As the star dims in the twilight ...

dateMay 15, 2009 in Astronomy
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Galactic X-ray emissions originate from stars

( -- A 25-year old astronomical mystery has been solved: Most of the diffuse X-ray emissions in the Milky Way do not originate from one single source but from so-called white dwarfs and from stars with active ...

dateMay 05, 2009 in Astronomy
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Solar systems around dead Suns?

( -- Using NASA’s Spitzer Space Telescope, an international team of astronomers have found that at least 1 in 100 white dwarf stars show evidence of orbiting asteroids and rocky planets, suggesting these objects ...

dateApr 20, 2009 in Astronomy
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