The quasar PKS 1247+3406 has a redshift z = 4.897. What is its recession speed away from our galaxy?
A)4.897c
B)2.06c
C)1.204c
D)0.94c

Name: The quasar PKS 1247+3406 has a redshift z = 4.897. What is its recession speed away from our galaxy? A)4.897c B)2.06c C)1.204c D)0.94c
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Question

Quizplus · Accepted Answer

The recession speed can be calculated using the formula v = cz, where c is the speed of light and z is the redshift. Therefore, v = (2.998 x 10^5 km/s) x 4.897 = 1.468 x 10^6 km/s or 0.94c.

The Quasar PKS 1247+3406 Has a Redshift Z = 4