Šaltinis – EurekAlert.com – Largest collection of anomalous white dwarfs observed in new Hubble images
Hubble kosminis teleskopas stebėjo 24 neįprastas žvaigždes, 18 iš kurių – naujai atrastos. Jos – baltosios nykštukės, dažnai sutinkamos, tačiau šios keistos tuo, kad sudarytos iš helio, o ne iš įprastų anglies ir deguonies. Tai pirma didelė helio branduolių baltųjų nykštukių [...]
Archive for the ‘Teleskopai’ Category
Hubble atranda didžiausią neįprastų baltųjų nykštukių santalką
Posted in Orbitiniai, Žvaigždės-nykštukės, tagged balt on 2009/05/03 | Leave a Comment »
Galaktikos Rentgeno spindulių fonas
Posted in Daugianarės, Orbitiniai, Paukščių takas, Žvaigždės-nykštukės, tagged baltoji nykštukė, chandra, rentgenas, spitzer on 2009/05/03 | Leave a Comment »
Šaltinis – Astronomy.com – Resolving a galactic mystery
Ypač gili Chandra Rentgeno spindulių kosminės observatorijos artimos Galaktikos centrui srities nuotrauka atskleidė seną paslaptį apie Rentgeno spindulių foną ties galaktikos plokštuma. Fonas tirtame regione buvo sukeltas šimtų taškinių Rentgeno spindulių šaltinių.
Tyrimas truko 12 dienų. Plote, atitinkančiame 3% Mėnulio danguje užimamo ploto, buvo rasti 473 objektai, o iš [...]
Didžiausias radioteleskopas stebi aktyvias Fermi galaktikas
Posted in Kvazarai, Orbitiniai on 2009/05/03 | Leave a Comment »
Šaltinis – Astronomy.com – Continent-sized radio telescope takes close-ups of Fermi active galaxies
Tarptautinė astronomų komanda, naudodamasi didžiausiu pasaulyje radioteleskopu, pažvelgė giliai į šviesiausias galaktikas, kurias NASA Fermi Gama spindulių kosminis teleskopas (NASA Fermi Gamma-ray Space Telescope) gali įžvelgti. Tyrimas sustiprina ryšį tarp aktyviosios galaktikos gama spindulių emisijų ir jos galingų radiobangas skleidžiančių medžiagos čiurkšlių.
“Dabar tikrai [...]
Astronomers Discover a Supernova/Gamma Ray Burst Hybrid (UT)
Posted in Orbitiniai, Supernovos, tagged gamma ray burst, grb, rentgenas, supernova, swift, x-ray on 2008/07/26 | Leave a Comment »
Astronomers have just uncovered the true nature of what they thought was a regular supernova observed in January. At the time, it looked like a supernova emitting a 5-minute long burst of X-rays. But these X-rays were of a lower energy (known as “soft” X-rays) than expected leading some to believe this was a normal [...]
STEREO Maps Far Reaches of Solar System (UT)
Posted in Orbitiniai, Saulės sistema on 2008/07/06 | Leave a Comment »
NASA’s twin STEREO spacecraft have been studying the sun since their launch in 2006. But the mission made a surprising and unexpected discovery by detecting particles from the edge of the solar system, and for the first time, scientists have now been able to map the region where the hot solar wind meets up with [...]
GLAST Blasts Off (UT)
Posted in Juodosios skylės, Orbitiniai on 2008/06/13 | Leave a Comment »
A powerful new space observatory called GLAST launched successfully today, and will provide a huge leap in our capabilities to study gamma rays, the highest-energy form of light. The Gamma Ray Large Area Space Telescope will enable scientists to answer persistent questions about a broad range of topics, including supermassive black-holes, pulsars, cosmic rays, and [...]
WMAP Reveals Neutrinos, End Of Dark Ages, First Second Of Universe (2008 WMAP Press Release)
Posted in Mikropasaulis, Orbitiniai on 2008/03/15 | Leave a Comment »
WASHINGTON – NASA released this week five years of data collected by the Wilkinson Microwave Anisotropy Probe (WMAP) that refines our understanding of the universe and its development. It is a treasure trove of information, including at least three major findings:
* New evidence that a sea of cosmic neutrinos permeates the universe
* Clear evidence the [...]
Robotic Observatory Built on Remote Antarctic Summit (NG)
Posted in Antžeminiai on 2008/02/07 | Leave a Comment »
Astronomers have a new eye on the sky from what may be the best observatory location on Earth—the desolate Antarctic Plateau. An international expedition led by the Polar Research Institute of China has assembled a fully automated observatory known as PLATO (PLATeau Observatory) at Dome Argus on the plateau’s highest point. The observatory site is [...]
Black holes seen spinning at the limits predicted by Einstein (UT)
Posted in Juodosios skylės, Orbitiniai, tagged black hole, chandra, einstein, juodoji skylė, spinning, sukimasis on 2008/01/13 | Leave a Comment »
The supermassive black holes that lurk at the hearts of the most massive galaxies might be spinning faster than astronomers ever thought. In fact, they might be spinning at the very limits predicted by Einstein’s theory of relativity. Perhaps it’s this extreme rotational speed that generates the energetic jets that blast out of the most [...]
Super-neutron stars are possible (UT)
Posted in Antžeminiai, Juodosios skylės, Neutroninės/pulsarai on 2008/01/13 | Leave a Comment »
When a star like our Sun dies, it’ll end up as a white dwarf. And if a star contains 1.4 times the mass of the Sun, it’ll have enough gravity to turn into a neutron star. Much bigger stars turn into black holes. But now it turns out, neutron stars can be much more massive [...]
