Astronomers find a new class of stellar explosions they're bright and blue-and a bit strange. They are a new type of exploding star discovered recently a team of astronomers "California Institute of technology" (he) leadership. Among the most luminous in the cosmos, could help these new types of supernovae understand researchers be distant stars and galaxies and the early universe may be like.
Says Robert Kempe, post-doctoral researcher and lead author got in a paper published in nature magazine, June 9, "you learn a whole new class of supernovae that wasn't known before,". In addition to found four explosions of this kind, the Panel also discovered that two high formerly, whose identities have puzzled astronomers, also belong to this new category.
Kempe made headlines in 2007 when-as a graduate student at the University of Texas, Austin was discovered and then find the brightest Supernova ever: 100 billion times brighter than the Sun and ten times brighter than most other supernovae. 2005Ap Freelancer, it's a bit strange. On the one hand, the chemical fingerprints that spectrum says astronomers making premium and how far and what happened when Dawn was unlike any seen before. Nor is there evidence of hydrogen, there is usually at most.
Discovered by astronomers using the Hubble Space Telescope "almost at the same time mysterious Supernova called SCP 06F6. This extraordinary individual, also nice and there was something that pointed that big bang like 2005ap.
Shri Kulkarni, won the John d. and Catherine t. McArthur Professor of astronomy and planetary science paper, recruit Israeli Kempe as one of the founding members of the Palomar transient factory (PTF). PTF is a clear sky and flashes of light that wasn't there before flashes indicating objects called crossing the lot. As part of the PTF use Kempe and his telescope Ocean Samuel 1.2 meters in the new Palomar Observatory Supernova discovery four. After taking spectra with 10-meter Keck Telescopes in Hawaii waltlskob 5.1 meters in Palomar 4.2 m William Herschel telescope in the Canary Islands, astronomers discovered that all four objects may be unusual spectral signature.
Then I realized if I turned a little Kempe superscope 2005ap had two years earlier started many new four such objects. Then a group all together spectra. According to the information technology boom was the best game ".
Identifies the town soon become spectrum 06F6 SCT likewise align it with others. Finally, it was found that all six Ultra Brothers and sisters, and they all have blue spectrum with wavelengths of bright in UV light.
In accordance with two mysterious Supernova 2005ap Kempe and SCP 06F6 may look different from each other because 2005ap was 3 billion light away while SCP 06F6 8 billion light away. The more distant redshift supernovae, cosmic phenomenon that extended universe wavelength of light emitted, converting Spectra UHF end red.
Four new discoveries that have similar attributes for 2005ap and SCP 06F6, medium distance, providing the missing link connected the two previously mysterious supernova. "This is what was most striking about this-that all of one standard," says kasliwal Mansi, a graduate student paper an Israeli nature.
Although astronomers know this, does anyone know much else. Kempe says "we have a whole new class of objects that cannot be explained by any of the models we've seen before". What we know as bright and hot to 10,000 to 20,000 k; it expands quickly to 10,000 kilometers per second; they lack hydrogen; take approximately 50 days dwindling away very longer than most supernovae, lighting, often by radioactive decay. So there must be other mechanism is to make it so bright.
Includes a possible model would create blast by using these properties star pulse 90 to 130 times the mass of the Sun. Magnetic pulsation blowing hydrogen-free rounds, when the star exhausts its fuel and explodes, so those missiles blast heats to welominositis temperature observation.
Requires model II the star exploding supernovae, but leaves behind the so-called magnitar, dense object speed spining with strong magnetic field. Periodic magnetic field slows down in magnitar also interacts with the particles which fills the space, releasing energy. Energy which heats the material that has already been toppled during the supernova explosion, and could explain naturally brightness of these events.
Newly discovered Supernova live in small groups, and some dark stars billion galaxies called Nano. (The milky way stars 200-400 billion). Supernovae, almost 100 times brighter than their host galaxies, highlighting their environments such as street lamps light up dark roads remote. It acts as a kind of backlighting, allowing astronomers to measure the spectrum of interstellar gas that fills the dwarf galaxies, and disclosure of the composition of each Galaxy. Once the two-note fades later, astronomers directly to study Galaxy dwarf remained not detected if it weren't for supernovae.
These supernovae can also old stars might be like, since it probably arises from massive stars about a hundred times more stars than the Sun, which was very similar to the first stars in the universe.
Kulkarni says "it's really amazing how rich night sky still difficult". "Plus," Palomar transient factory "are making tremendous progress in astronomy and astrology, as well."
This research was supported by the National Science Foundation and science foundations between United States and Israel, and Israel Science Foundation, Department of energy, Betty & Gordon Moore Foundation, Gary Cynthia binger, Richard and Rhoda Goldman Fund and the Royal Society.
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The above story is reprinted from materials provided by California Institute of technology, via EurekAlert!, a service of AAAS. Marcus wrote the original article.
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