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Latest Supernovae Stories

Computer Simulations Shed New Light On Neutron Star Formation
2013-06-28 04:30:08

redOrbit Staff & Wire Reports - Your Universe Online Researchers from the Max Planck Institute for Astrophysics (MPA) have, for the first time, created three-dimensional computer models in order to study the formation of neutron stars at the center of collapsing stars, officials from the German research center announced earlier this week. By creating what they call the most expensive and elaborate computer simulations of the process to date, the team of investigators confirmed,...

Chandra Discovers Supernova Remnant Emission Is Synchrotron Radiation
2013-06-26 16:32:40

Lee Rannals for redOrbit.com – Your Universe Online Astronomers will be reporting details about a supernova remnant known as G1.9+0.3 in the upcoming issue of The Astrophysical Journal Letters. In 2008, a team of scientists discovered the remains of a supernova known to have occurred in the Milky Way, about 28,000 light years away from Earth. The explosion would have been visible from Earth a little more than a hundred years ago, assuming it was not obscured by dust and gas....

Supernova Gold Standard For Normal
2013-06-19 13:37:32

Lee Rannals for redOrbit.com - Your Universe Online A group of astronomers has released a dataset based on 32 nights of repeated observations of supernova 2011fe, creating a "gold-standard" atlas for Type 1a supernovae. Astronomers were able to catch supernova 2011fe just 12 hours after it exploded in the Pinwheel Galaxy in the Big Dipper. The supernova is easy to spot with binoculars, and has been nicknamed the Backyard Supernova. Researchers from the international Nearby Supernova...

Supernova Light Echo Detected
2013-06-05 13:28:46

Lee Rannals for redOrbit.com - Your Universe Online Astronomers discovered light echoing off of material surrounding a recent supernova explosion, supporting the theory that exploding white dwarfs become unstable from matter donated by large non-degenerate stars. The team detected the light echo coming off of SN 2009ig, making it the sixth and most luminous discovered from a type Ia supernova. A light echo works similarly in principle to the more familiar sound echoes heard on Earth....

First Biological Evidence Of Ancient Supernova
2013-05-09 09:20:27

John P. Millis, PhD for redOrbit.com — Your Universe Online In the early Universe the only elements capable of forming were hydrogen and helium. All subsequent atoms are created by massive stars: the lighter members by nuclear fusion in their cores, with much of the rest created during supernovae as atoms are collided at incredible energies leading to nucleosynthesis. Some of the elements produced have long half-lives, sticking around to lay the foundation for new stars, planets and...

Black Hole Birth In A Cosmic Flash
2013-05-05 06:07:14

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Stars sustain themselves by fusing elements in their core, producing even heavier atoms, releasing energy that keeps the immense force of gravity at bay. But eventually, the fusion process will no longer produce enough outward radiation pressure to sustain the star, and it will begin to collapse in on itself. In the grandest of cases, the progenitor is a truly massive object, perhaps tens or hundreds of times the mass...

Distant Type Ia Supernova Magnified Through Gravitational Lensing
2013-04-23 18:32:44

Lee Rannals for redOrbit.com — Your Universe Online Researchers at the Kavli IPMU, led by Robert Quimby, have discovered the first ever Type Ia supernova (SNIa), extraordinarily magnified by a gravitational lens. Scientists wrote in the Astrophysics Journal Letters they discovered the supernova, PS1-10afx, with the Panoramic Survey Telescope & Rapid Response System 1 (Pan-STARRS1). The supernova exploded over 9 billion years ago, making it a much further object than most...

Scientists Unravel The Mysteries Of Large Gamma-Ray Bursts
2013-04-16 13:06:58

WATCH VIDEO: [Swift's Christmas Burst From Blue Supergiant Star Explosion] Lee Rannals for redOrbit.com — Your Universe Online Researchers unwrapped a little more of the mystery surrounding a new type of powerful cosmic explosion, creating a new theory around the death of supergiant stars. These huge explosions create powerful blasts of high energy gamma rays, known as gamma-ray bursts. These larger blasts can last for several hours, compared to most gamma-ray bursts which...

Kepler's Supernova Contains Higher Heavy Metal Content Than Our Sun
2013-04-09 14:22:13

Brett Smith for redOrbit.com - Your Universe Online Using observations made from the Suzaku satellite, a joint venture between Japan's space agency and NASA, an international team of researchers has found that the star responsible for Johannes Kepler´s famous supernova contained a much higher heavy metal content that our own sun. After determining the makeup of the distant star, the scientists said they have a greater understanding of Ia supernovae, a useful class of stellar...


Latest Supernovae Reference Libraries

6_c21be0ecb1b565a9be109a383c38223f2
2004-10-19 04:45:43

White Dwarf -- A white dwarf is a a star supported by electron degeneracy. A star like our Sun will become a white dwarf when it has exhausted its nuclear fuel. Near the end of its nuclear burning stage, such a star goes through a red giant phase and then expels most of its outer material (creating a planetary nebula) until only the hot (T > 100,000 K) core remains, which then settles down to become a young white dwarf. A typical white dwarf is half as massive as the Sun, yet only...

6_19859ff34fd03d00777232e2520ce83f5
2004-10-19 04:45:42

Supernova Remnant -- A supernova remnant (SNR) is made up of the materials left behind by the gigantic explosion of a star in a supernova. There are two possible routes to this end: either a massive star may cease to generate fusion energy in its core, and collapse inward under the force of its own gravity, or a white dwarf star may accumulate material from a companion star until it reaches a critical mass and undergoes a similar collapse. In either case, the resulting supernova...

6_79c799b9f03f60809a9d0aecf38491202
2004-10-19 04:45:42

Supernova -- A supernova is a star that increases its brightness drastically within a matter of days, making it appear as if a "new" star was born (hence "nova"). The "super" prefix distinguishes it from a mere nova, which also involves a star increasing in brightness, though to a lesser extent and through a much different mechanism. Astronomers have classified supernovae in several classes, according to the lines of different elements that appear in their spectra. The first...

6_dac4e7d6b8fb5cf3a1458d796b90d7a92
2004-10-19 04:45:42

Stellar Evolution -- Stellar evolution is the process of formation, life, and death of stars. It is one of the major topics of cosmogony. Star Birth and Life A star starts out as an enormous cloud of gas and dust many light-years across. Star formation begins when the cloud begins to condense under its own gravity. The processes that initiate this contraction are not fully understood. The cloud fragments fuse into stellar mass clouds known as protostars. Protostars do not emit...

6_19859ff34fd03d00777232e2520ce83f4
2004-10-19 04:45:42

Nova -- A nova is an enormous nuclear explosion caused by the accretion of hydrogen onto the surface of a white dwarf star. When a white dwarf has a close companion star, the companion will often begin to have its outer atmosphere drawn away from it by the white dwarf's gravity as the companion star ages and expands into a red giant. The gases so captured consist primarily of hydrogen and helium, the two principle constituents of matter in the universe. The gases are compacted on the...

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Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
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