An Introduction to Modern Astrophysics · Problem 17.2

Close Binary Star Systems — Carroll & Ostlie

Physics — Astrophysics · general-relativity-gravitational-redshift

Problem

Show that Eq. (17.6) for the gravitational redshift remains valid even if the light travels upward at an angle

\theta

measured from the vertical as long as

h

is taken to be the vertical distance traveled by the light pulse.