Original anzeigen (0,4 MB)SN2011fe, the supernova in question, was picked up at the Palomar Transient Factory (PTF), a fully-automated, wide-field survey, just 11 hours after the light of its explosion began to reach Earth, and was shortly confirmed as a Type Ia supernova.http://www.theregister.co.uk/2011/12/15/supernova_captured/print.html
The European Southern Observatory's Very Large Telescope has picked up the fastest rotating star found so far. This massive bright young star lies in our neighbouring galaxy, the Large Magellanic Cloud, about 160,000 light-years from Earth. Astronomers think that it may have had a violent past and has been ejected from a double star system by its exploding companion.
An international team of astronomers has been using ESO's Very Large Telescope at the Paranal Observatory in Chile, to make a survey of the heaviest and brightest stars in the Tarantula Nebula, in the Large Magellanic Cloud. Among the many brilliant stars in this stellar nursery the team has spotted one, called VFTS 102, that is rotating at more than two million kilometres per hour -- more than three hundred times faster than the Sun and very close to the point at which it would be torn apart due to centrifugal forces. VFTS 102 is the fastest rotating star known to date.
The star spins around its axis at the speed of 600 kilometers per second at the equator, a rotational velocity so high that the star is nearly tearing apart due to centrifugal forceshttp://www.sciencedaily.com/releases/2011/12/111205102424.htm
http://www.sciencedaily.com/releases/2011/12/111205170055.htm
Durch die extrem hohe Rotationsgeschwindigkeit ist der Stern an den Polen abgeflacht und hat eine Scheibe aus Plasma um sich gebildet.
Das Universum hat doch immer wieder neue Überraschungen bereit...
Original anzeigen (6,1 MB)Das charakteristische Wasserstoffgas-Leuchten des auch als Kaliforniennebel bekannten NGC 1499 wird vom Ultraviolettlicht des leuchtstarken, blauen Sterns Xi Persei gleich rechts daneben gespeist.http://www.starobserver.org/ap111021.html
Original anzeigen (1,8 MB)
Original anzeigen (1,2 MB)Mit ein bisschen Phantasie, sieht das aus wie eine blaue Hand die nach etwas glühendem greift. :Dbo schrieb:Das ist der Pulsar PSR B1509-58.
Original anzeigen (2,1 MB)
