| Briefly describe the mechanism and the observational properties of Type Ia supernovae. | [2] |
| This is bookwork. Only 2 marks, so not much detail required; probably 1 mark is for the mechanism and 1 for the observational properties. | |
| You wish to investigate the variation of H with cosmic epoch out to redshifts of the order of 1. Why do you choose to use Type Ia supernovae as your distance indicators? | [3] |
| To answer this question, you need to explain what you need to do the study you plan, then explain how Type Ia supernovae fulfil these requirements. |
(2005 Q4.)