It was a gamma-ray burst鈥攐ne of the most violent events in the universe, and among the most puzzling. Fox knew that the coming evening was his one chance to catch the burst's quickly fading glow and to help solve one of the most frustrating mysteries in astronomy: What creates gamma...
37、sible gravitational wavesand visible light.这道光会是那个神秘而超强的Could this light be a mysterious伽马射线暴吗?and ultra-powerfulgamma-ray burst?这些死亡恒星的碰撞怎么会与How could these collidingdead stars be associated伽马射线爆发有关呢?with gamma-ray bursts,伽马射线爆发实际上是我们在整个宇...
It is now recognized that long-duration Gamma-Ray Bursts (GRBs) are linked to the collapse of massive stars, based on the association between (low-redshift) GRBs and (type Ic) core-collapse supernovae (SNe). The census of massive stars and GRBs reveals, however, that not all massive...
where she holds the Hiroko Sherwin Chair in Extragalactic Astronomy, said: “We were excited to catch the very early optical light from this short gamma-ray burst – something that is still largely impossible to do without using a robotic telescope. But when we analyzed our exquisite data,...
The ejected electron is a beta particle. Spontaneous fission: A nucleus splits into two pieces. In the process, it can eject neutrons, which can become neutron rays. The nucleus can also emit a burst of electromagnetic energy known as a gamma ray. Gamma rays are the only type of nuclear...
It’s hypothesized that the first of the five mass extinctions on the chart above may have been caused by a gamma-ray burst. A solar super flare. Solar flares happen all the time, and the Earth’s magnetic field typically shields us from them (this is what produces the Northern Lights)...
gamma-ray burst classes (Mukherjee et al. 1998; Bagoly et al. 1998; Hakkila et al. 2000a): –3 – duration T90 (the time interval during which 90% of a burst’s emission is detected), fluence S (time integrated flux in the 50 to 300 keV spectral range), and spectral hardness...
Once the envelope is laid out, the crew begins inflating it, using a powerful fan at the base of the envelope. CargoLifter When there is enough air in the balloon, the crew blasts the burner flame into the envelope mouth. This heats the air, building pressure until the balloon infla...
Or, gamma ray bursts where a gamma ray burst would go off and it might last for a couple of seconds, but there was no equipment that was able to slew around quickly enough to spot the afterglow. It took a mission. Pamela: And that was where Swift came into play. And then we have...
This is the first part of two to cover our new testing, and you can read about the second parthere. On top of this new pursuit pattern, we've changed several tests and testing procedures in Test Bench 2.0, too. We're now using gamma-corrected response times to measure Cumulative Absolut...