What is a gamma ray burst?

A gamma ray burst is a powerful explosion of gamma rays from a distant source in space.

Gamma ray bursts (GRBs) are the most energetic events in the universe, releasing more energy in a few seconds than the Sun will emit in its entire lifetime. They are thought to be caused by the collapse of massive stars or the collision of two neutron stars. GRBs emit radiation across the electromagnetic spectrum, but they are most easily detected in the gamma ray range.

GRBs are classified into two types: long and short. Long GRBs last for several seconds to minutes and are associated with the collapse of massive stars. Short GRBs last for less than two seconds and are thought to be caused by the merger of two neutron stars.

The study of GRBs has provided valuable insights into the early universe, as they can be detected from billions of light-years away. They have also been used to test fundamental physics theories, such as the theory of relativity. In addition, GRBs have practical applications, such as helping to calibrate instruments on satellites and spacecraft.

Despite their importance, much about GRBs remains a mystery. Scientists continue to study these powerful explosions in order to better understand their origins and properties.