News tagged with gamma rays

Found: Heart of darkness

Astronomers using the 10-meter Keck II telescope in Hawaii have confirmed in a new paper that a troupe of about 1,000 small, dim stars just outside the Milky Way comprise the darkest known galaxy, as well ...

Aug 01, 2011
3.8 / 5 (12) 47 | with audio podcast

Integral challenges physics beyond Einstein

(PhysOrg.com) -- ESA's Integral gamma-ray observatory has provided results that will dramatically affect the search for physics beyond Einstein. It has shown that any underlying quantum 'graininess' of space ...

Jun 30, 2011
4.8 / 5 (48) 166 | with audio podcast

'Odd couple' binary makes dual gamma-ray flares

(PhysOrg.com) -- In December 2010, a pair of mismatched stars in the southern constellation Crux whisked past each other at a distance closer than Venus orbits the sun. The system possesses a so-far unique ...

Jun 29, 2011
4 / 5 (4) 3 | with audio podcast

Gamma-ray emission from Terzan 5

(PhysOrg.com) -- The H.E.S.S. telescope system in Namibia discovered a new source of very-high-energy gamma-rays from the direction of the globular cluster Terzan 5. Being very likely located in the outer ...

Jun 24, 2011
4.8 / 5 (4) 2 | with audio podcast

Bright sparks among 'Asia's Nobel Prize' winners

Two scientists who are probing the brightest flashes in the universe were Tuesday named among the winners of the Shaw Prize, the $1 million award known as the Nobel Prize of the east.

Jun 07, 2011
5 / 5 (1) 0

New candidate for most distant object in universe

(PhysOrg.com) -- A gamma-ray burst detected by NASA's Swift satellite in April 2009 has been newly unveiled as a candidate for the most distant object in the universe. At an estimated distance of 13.14 billion ...

May 25, 2011
5 / 5 (8) 8 | with audio podcast

Small bangs and white holes

Most gamma-ray bursts come in two flavors. Firstly, there are long duration bursts which form in dense star-forming regions and are associated with supernovae – which would understandably generate a sustained ...

May 23, 2011
4.4 / 5 (16) 13 | with audio podcast