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The Discovery Of Deceleration, Why Some Pulsars Appear Older Than The Universe

By altonparrish3 on | From nanopatentsandinnovations.blogspot.com
Stellar astrophysics helps to explain the behaviour of fast rotating neutron stars in binary systems Pulsars are among the most exotic celestial bodies known. They have diameters of about 20 kilometres, but at the same time roughly the mass of our sun. A sugar-cube sized piece of its ultra-compact matter on the Earth would weigh hundreds of millions of tons. A sub-class of them, known as millisecond pulsars, spin up to several hundred times per second around their own axes. Previous...Read Full Story

More Than 100 Billion Electron Volts: Crab Pulsar Beams Most Energetic Gamma Rays Ever Detected From A Pulsar

By altonparrish3 on | From nanopatentsandinnovations.blogspot.com
A thousand years ago, a brilliant beacon of light blazed in the sky, shining brightly enough to be seen even in daytime for almost a month. Native American and Chinese observers recorded the eye-catching event. We now know that they witnessed an exploding star, which left behind a gaseous remnant known as the Crab Nebula. The same object that dazzled skygazers in 1054 C.E. continues to dazzle astronomers today by pumping out radiation at higher energies than anyone expected. Researchers have...Read Full Story

NASA's Fermi Finds Youngest Millisecond Pulsar, 100 Pulsars To-Date

By altonparrish3 on | From nanopatentsandinnovations.blogspot.com
An international team of scientists using NASA's Fermi Gamma-ray Space Telescope has discovered a surprisingly powerful millisecond pulsar that challenges existing theories about how these objects form. At the same time, another team has located nine new gamma-ray pulsars in Fermi data, using improved analytical techniques. In three years, NASA's Fermi has detected more than 100 gamma-ray pulsars, but something new has appeared. Among a type of pulsar with ages typically numbering a...Read Full Story

Zombie Stars: NASA Mission Would Seek The "Undead" Among "Dead" Stars

By altonparrish3 on | From nanopatentsandinnovations.blogspot.com
This is an artist's concept of a pulsar (blue-white disk in center) pulling in matter from a nearby star (red disk at upper right). The stellar material forms a disk around the pulsar (multicolored ring) before falling on to the surface at the magnetic poles. The pulsar's intense magnetic field is represented by faint blue outlines surrounding the pulsar. Credit: NASA Neutron stars have been called the zombies of the cosmos, shining on even though they're technically dead, and occasionally...Read Full Story

Cosmic Crashes Forge Gold

By altonparrish3 on | From nanopatentsandinnovations.blogspot.com
The cosmic site where the heaviest chemical elements such as lead or gold are formed is likely to be identified: Ejected matter from neutron stars merging in a violent collision provides ideal conditions. In detailed numerical simulations, scientists of the Max Planck Institute for Astrophysics (MPA) and affiliated to the Excellence Cluster Universe and of the Free University of Brussels (ULB) have verified that the relevant reactions of atomic nuclei do take place in this environment...Read Full Story
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Stellar astrophysics explains the behavior of fast rotating neutron stars in...
This is exactly what the observational data seem to suggest. Furthermore, these new findings help explain why some millisecond pulsars appear to have characteristic ages exceeding the age of the Universe and perhaps why no sub-millisecond radio ...  
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Recycling Pulsars – The Millisecond Matters…
It’s a millisecond pulsar… a rapidly rotating neutron star and it’s about to reach the end of its mass gathering phase. For ages the vampire of this binary system has been sucking matter from a donor star. It has been busy, spinning at incredibly high rotational speeds of about 1 to 10 milliseconds and shooting [...]  
From universetoday.com ()
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Second-Chance Planets
Three planets orbit the dead star PSR B1257+12 in this artist's concept. The dead star is a pulsar, which an extremely dense neutron star that spins rapidly, beaming energy into space. The pulsar formed when a massive star exploded as a supernova. The planets, which were the first comfirmed worlds detected outside our solar system, probably formed from debris from the exploded star and its original system of planets and other material. The...  
From stardate.org ()
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NASA Catches A Neutron Star Moving Over 3 Million Miles Per Hour
Pushed by the force of a giant supernova, a neutron star has been travelling for hundreds of years at millions of miles per hour. (Image Credit: NASA/JPL-CalTech) Around 16 or 17,000 years ago, a star exploded, producing a giant supernova ...  
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Millisecond Pulsars Slow Down Through Disintegration
Millisecond pulsars are a special type of a special class of neutron stars. They are revolving around their own axis many times per second, and are releasing radiations in jets, which makes them appear as lighthouse when viewed from Earth. Now, experts ...  
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