News tagged with white dwarfs

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White dwarfs hide information on dark forces

Researchers from Europe and the USA have ruled out a multitude of possible parameters for dark photons - a type of dark matter and energy - with the help of white dwarfs. In some aspects, the shining of these ...

dateNov 05, 2013 in Astronomy
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Hubble monitors supernova in nearby galaxy M82

This is a Hubble Space Telescope composite image of a supernova explosion designated SN 2014J in the galaxy M82. At a distance of approximately 11.5 million light-years from Earth it is the closest supernova ...

dateFeb 26, 2014 in Astronomy
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Did GD61 eat a Planetessimal?

The primary method by which astronomers hope to study exoplanet atmospheres is by detecting their absorption spectra as they transit their parent stars. However, another way would be to detect the signal of ...

dateJan 06, 2011 in Astronomy
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Capturing a fleeting starburst

On 11 November 2011, astronomers witnessed a distant star erupt in an incredibly powerful explosion. An international research team including Mikio Morii and colleagues from the MAXI Team at the RIKEN Global ...

dateJan 31, 2014 in Astronomy
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Supernovae mystery solved

(PhysOrg.com) -- Supernovae are gigantic stellar explosions that can be seen across the entire universe. Type Ia supernovae are a relatively homogeneous class of stellar explosions, which researchers use as ...

dateJun 30, 2010 in General Physics
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Fermi detects gamma-rays from exploding nova

Using the Large Area Telescope (LAT) onboard NASA's Fermi Gamma-ray Space Telescope satellite, astronomers have detected gamma rays from a nova for the first time, a finding that surprises both observers and ...

dateAug 23, 2010 in Astronomy
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Measuring a Monstrous Supernova

A rare Type Ia supernova whose progenitor star had a mass some two and a half times that of our sun - much more mass than a Type Ia progenitor should be able to accumulate before it explodes - has led members ...

dateMar 25, 2010 in Astronomy
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Bright nova in the constellation of Delphinus

A bright nova has recently been discovered in the constellation of Delphinus (The Dolphin). The discoverer was Koichi Itagaki, in Japan who used an 18 cm reflecting telescope with a CCD camera. The nova was ...

dateAug 23, 2013 in Astronomy
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Helium pair have regular violent flare ups

(PhysOrg.com) -- A team of astronomers led by Dr Gavin Ramsay of Armagh Observatory have spotted violent eruptions from an interacting pair of stars that orbit around each other every 25 minutes. Unusually, ...

dateMay 24, 2010 in Astronomy
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Music of the spheres: Star Songs

(Phys.org) —Plato, the Greek philosopher and mathematician, described music and astronomy as "sister sciences" that both encompass harmonious motions, whether of instrument strings or celestial objects. ...

dateJun 04, 2013 in Astronomy
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Astronomers find 'snooker star system'

Astronomers at The University of Warwick and the University of Sheffield have helped discover an unusual star system which looks like, and may even once have behaved like, a game of snooker.

dateNov 09, 2010 in Astronomy
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