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-ray bursts?Jeff WisePopular Science
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Described by NASA as among the most powerful phenomena in our universe, gamma-ray bursts are essentially dramatic explosions of extremely high-energy light. They were first discovered in 1963 when the U.S. used one ofthe functions of satellitesto help monitor signs of illegal nuclear testing fro...
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...
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...
An illustration of a gamma-ray burst (Image credit: NASA/Swift/Cruz deWilde) Fortunately, Earth's atmosphere protects us from major exposure to gamma rays originating from beyond the Earth. However, nothing would protect us, or the planet, from the most powerful source of gamma rays in the...
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)...
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Fermi gamma rays space telescope was designed to study astronomical objects. The telescope contains the Gamma-Ray burst monitor and the telescope...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough homework...
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 agamma ray. Gamma rays are the only type of nuclear radiation that comes from energy instead of...