What is the observed distribution of the longer-living gamma-ray bursts in the sky?
A) concentrated primarily along the plane of the Milky Way, indicating an origin in the Galaxy
B) uniform over the entire sky, indicating an origin outside of the Milky Way
C) clumpy but not coinciding with any known galaxy clusters, indicating an origin in a new kind of astronomical object
D) clumpy, approximately coinciding with large clusters of galaxies such as the Coma cluster

Question

Quizplus · Accepted Answer

Longer-living gamma-ray bursts are observed to be uniformly distributed over the entire sky, which indicates that they originate from sources outside of the Milky Way galaxy. This distribution suggests that they are not influenced by the structure of our galaxy, supporting the idea that their sources are cosmological in nature.

What Is the Observed Distribution of the Longer-Living Gamma-Ray Bursts