Supernovae Current Events

Supernovae Current Events, Supernovae News Articles.
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An unusual white dwarf may be a supernova leftover
Astronomers have identified a white dwarf star in our galaxy that may be the leftover remains of a recently discovered type of supernova. (2017-08-17)

NASA'S Swift sees double supernova in galaxy
In just the past six weeks, two supernovae have flared up in an obscure galaxy in the constellation Hercules. Never before have astronomers observed two of these powerful stellar explosions occurring in the same galaxy so close together in time. (2007-06-26)

1 supernova type, 2 different sources
The exploding stars known as Type Ia supernovae serve an important role in measuring the universe, and were used to discover the existence of dark energy. They're bright enough to see across large distances, and similar enough to act as a (2012-05-07)

Hubble sets sights on an explosive galaxy
When massive stars die at the end of their short lives, they light up the cosmos with bright, explosive bursts of light and material known as supernovae. A supernova event is incredibly energetic and intensely luminous -- so much so that it forms what looks like an especially bright new star that slowly fades away over time. (2019-06-14)

Hubble catches stellar explosions in NGC 6984
Another star has exploded, forming supernova SN 2013ek -- visible in this image as the prominent, star-like bright object just slightly above and to the right of the galaxy's center. (2013-11-08)

Supernova ignition surprises scientists
Scientists have captured the early death throes of supernovae for the first time and found that the universe's benchmark explosions are much more varied than expected. The scientists used the Kepler space telescope to photograph three type 1a supernovae in the earliest stages of ignition. They then tracked the explosions in detail to full brightness around three weeks later, and the subsequent decline over the next few months. (2015-05-20)

Japan OISTER collaboration uncovers the origin of extraordinary supernovae
Using data obtained through OISTER collaboration in Japan, Masayuki Yamanaka, Konan University, and col?eagues demonstrated that the origin of extraordinary supernovae can be explained by the 'accretion scenario.' The researchers discovered an anomalously strong infrared emission from 'the extraordinary supernova' SN 2012dn, which has never been observed in other Type Ia supernovae to date. Through detailed analysis, the researchers concluded that the infrared emission comes from the material ejected from the progenitor system. (2016-06-07)

Proof that ancient supernovae zapped Earth sparks hunt for after effects
Astrophysicist Adrian Melott offers assessment of compelling new supernovae evidence to appear in this week's Nature. (2016-04-06)

The best way to measure dark energy just got better
Dark energy is a mysterious force that pervades all space, acting as a (2011-01-13)

Super supernova: White dwarf star system exceeds mass limit
An international team led by Yale University has, for the first time, measured the mass of a type of supernova thought to belong to a unique subclass and confirmed that it surpasses what was believed to be an upper mass limit. Their findings could affect the way cosmologists measure the expansion of the universe. (2010-03-15)

Newly discovered supernova outshines all others
In a new study, researchers describe the most luminous supernova yet observed, which resides in an unusual host galaxy. (2016-01-14)

Surface helium detonation spells end for white dwarf
An international team of researchers has found evidence that the brightest stellar explosions in our Universe could be triggered by helium nuclear detonation near the surface of a white dwarf star. Using Hyper Suprime-Cam mounted on the Subaru Telescope, the team detected a type Ia supernova within a day after the explosion, and explained its behavior through a model calculated using the supercomputer ATERUI. This result was reported in Nature published on Oct. 5. (2017-10-04)

Magnetar could have boosted explosion of extremely bright supernova
Kavli IPMU and Instituto de Astrofisica de La Plata scientists have found highly magnetized, rapidly spinning neutron stars called magnetars could explain the energy source behind two extremely unusual stellar explosions. (2016-03-24)

Discovery: Most-luminous ever supernova
A team of astronomers, including Carnegie's Benjamin Shappee, Nidia Morrell, and Ian Thompson, has discovered the most-luminous supernova ever observed, called ASAS-SN-15lh. It is two times more luminous than any supernova previously discovered. In fact, ASAS-SN-15lh at peak was almost 50 times more luminous than the entire Milky Way galaxy. (2016-01-14)

XMM-Newton reveals the origin of elements in galaxy clusters
Deep observations of two X-ray bright clusters of galaxies with ESA's XMM-Newton satellite allowed a group of international astronomers to measure their chemical composition with an unprecedented accuracy. Knowing the chemical composition of galaxy clusters is of crucial importance to understanding the origin of chemical elements in the Universe. (2006-05-10)

Subaru Telescope captures 1800 exploding stars
The Subaru Telescope has captured images of more than 1800 exploding stars in the Universe, some located 8 billion light years from Earth. (2019-05-30)

Supernovae -- cosmic lighthouses
Astrophysicists explain the differences in the brightness of supernova explosions. (2007-02-09)

Veiled supernovae provide clue to stellar evolution
At the end of its life, a red supergiant star explodes in a hydrogen-rich supernova. By comparing observation results to simulation models, an international research team found that in many cases this explosion takes place inside a thick cloud of circumstellar matter shrouding the star. This result completely changes our understanding of the last stage of stellar evolution. (2018-09-03)

Blue is an indicator of first star's supernova explosions
An international collaboration led by the Kavli Institute for the Physics and Mathematics of the Universe have discovered that the color of supernovae during a specific phase could be an indicator for detecting the most distant and oldest supernovae in the Universe -- more than 13 billion years old. (2016-07-11)

Powerful ancient explosions explain new class of supernovae
Astronomers affiliated with the Supernova Legacy Survey have discovered two of the brightest and most distant supernovae ever recorded, 10 billion light-years away and a hundred times more luminous than a normal supernova. (2013-12-18)

Stability lost as supernovae explode
Exploding supernovae are a phenomenon that is still not fully understood. In a recent paper published in EPJ E, Yves Pomeau and his colleagues from the CNRS provide a new model of supernovae represented as dynamical systems subject to a loss of stability, just before they explode. Because similar stability losses also occur in dynamical systems in nature, this model could be used to predict natural catastrophes before they happen. (2014-05-15)

Astonomers may have made a cosmic blunder
In a blaze of publicity last year, scientists announced that the expansion of the Universe is accelerating in the grip of a weird antigravity force. But now some of the scientists involved say that new data throw the evidence into doubt. (1999-07-14)

Honing in on supernova origins
Type Ia supernovae are important stellar phenomena, used to measure the expansion of the universe. But astronomers know embarrassingly little about the stars they come from and how the explosions happen. New research from a team led by Harvard University and including Carnegie's Josh Simon, Chris Burns, Nidia Morrell, and Mark Phillips examined 23 Type Ia supernovae and helped identify the formation process for at least some of them. (2012-05-07)

Research reinforces role of supernovae in clocking the universe
New research by cosmologists at the University of Chicago and Wayne State University confirms the accuracy of Type Ia supernovae in measuring the pace at which the universe expands. The findings support a widely held theory that the expansion of the universe is accelerating and such acceleration is attributable to dark energy. The findings counter recent headlines that Type Ia supernova cannot be relied upon to measure the expansion of the universe. (2017-01-04)

Ocean floor dust gives new insight into supernovae
Extraterrestrial dust from the depths of the ocean could change the way we understand supernovae. Scientists have found the amount of plutonium in the dust is much lower than expected. (2015-01-20)

The origin of supernovae confirmed
Where do supernovae come from? Astronomers have long believed they were exploding stars, but by analyzing a series of images, researchers from the Dark Cosmology Center at the Niels Bohr Institute, University of Copenhagen and from Queens University, Belfast, have proven that two dying red supergiant stars produced supernovae. The results are published in the prestigious scientific journal Science. (2009-03-19)

Important clue uncovered for the origins of a type of supernovae explosion
The origin of an important type of exploding stars -- Type Ia supernovae -- have been discovered, thanks to a research team at the University of Pittsburgh.Studying supernovae of this type helps researchers measure galaxy distances and can lead to important astronomical discoveries. A paper detailing this research has been accepted for publication in Astrophysical Journal Letters. (2012-03-02)

Universe contains more calcium than expected
The universe contains one-and-a-half times more calcium than previously assumed. This conclusion was drawn by astronomers of the SRON Netherlands Institute for Space Research, after observations with ESA's XMM-Newton X-ray observatory. (2007-02-06)

Space is dusty, and now astronomers know why
Astronomers discover that space dust, the source of life in the Universe, comes from supernovae (2006-06-08)

Dirty space and supernovae
Interstellar space may be strewn with tiny whiskers of carbon, dimming the light of far-away objects. This discovery by scientists at the Carnegie Institution may have implications for the (2008-02-28)

Exiled stars explode far from home
Astronomers usually discover supernovae within large galaxies, where a star explodes perhaps once a century. UC Berkeley astronomer Melissa Graham and her colleagues used the sharp imaging capability of the Hubble Space Telescope to confirm that three exploding stars found in the empty regions between galaxies in a cluster were in fact lonely supernovae unattached to any galaxy at all. They were probably ripped from their host galaxies eons ago and exploded far from home. (2015-06-04)

Supernova progenitor found?
Type Ia supernovae are violent stellar explosions. Observations of their brightness are used to determine distances in the universe and have shown scientists that the universe is expanding at an accelerating rate. But there is still too little known about the specifics of the processes by which these supernovae form. New research led by Carnegie identifies a star, prior to explosion, which will possibly become a type Ia supernova. (2012-08-03)

Hubble breaks record in search for farthest supernova
NASA's Hubble Space Telescope has found the farthest supernova so far of the type used to measure cosmic distances. Supernova UDS10Wil, nicknamed SN Wilson after American President Woodrow Wilson, exploded more than 10 billion years ago. (2013-04-04)

Artificial intelligence classifies supernova explosions with unprecedented accuracy
Scientists from the Center for Astrophysics | Harvard & Smithsonian have trained machine learning software to classify supernovae without the traditional use of spectra. The project--the first to use real supernovae data to inform its artificial intelligence--is 82% accurate. Currently, scientists take spectra of 10-percent of the ~10,000 supernovae discovered each year. When the Rubin Observatory goes online, only 0.1-percent of the expected supernovae discoveries will be further studied without the new software. (2020-12-17)

Violent helium reaction on white dwarf surface triggers supernova explosion
An international research team are the first to find solid evidence about what triggered a star to explode, which will contribute to a further understanding of supernova history and behavior. (2017-10-05)

Supernovae parents found
Observations of Type Ia supernovae has led to the discovery that the universe is expanding at an accelerating rate and the notion of dark energy. However, astronomers do not know for certain how the explosions take place and whether they all share the same origin. Now, a team of researchers has examine 41 of these objects and concluded that there are clear signatures of gas outflows from the supernova ancestors, which are likely not white dwarfs. (2011-08-11)

Ultraviolet light from superluminous supernova key to revealing explosion mechanism
An international team of researchers led by Kavli IPMU's Alexey Tolstov and Ken'ichi Nomoto have discovered a way to use UV light from superluminous supernovae to uncover its explosion mechanism, and used it to identify Gaia16apd as a shock-interacting supernova, reports a new study. (2017-09-07)

Superfast Jets From Expoding Stars Could Explain Cosmic Speed Freaks
Gamma-ray bursts may be produced by the debris expelled from a supernova in a hyperfast jet, according to an astronomer in New Jersey. His theory would also explain why some pulsars are moving at speeds ten times faster than ordinary stars. (1998-09-16)

Discovery lays blame on supernova for extinction event nearly 360 million years ago
Between a decline in biodiversity and a series of extinction events, the Late Devonian period was not the most hospitable time on Earth. And then came one or more supernovae explosions whose resulting ionizing radiation was the final push that spelled the end for armored fish, most trilobites and other life. (2020-08-20)

Mystery of exploding stars yields to astrophysicists
By combining theory and observation, astrophysicists may have solved one of the ultimate mysteries about stars: what causes Type 1a supernovae, stellar explosions that can outshine whole galaxies. Several of the researchers behind the discovery discuss why understanding the mechanics of these cosmic blasts is so important. (2015-08-19)

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