Fig: 1.7=Wave length increases.
But this stretching won‟t be long
enough to make the GRBs visible to
our eye. The main reason is it becomes
pulled by the gravitational force of the
black hole which stretches the light
and increases its wave length. It also
sucks the light into the black hole.
That‟s why the GRBs of powerful
supernovas last for only about 1 to 30
seconds. So, the action which is seen
through the naked eye is called
Gamma Ray Burst (GRB). But, the
light ray which is seen in a Gamma