Add RAVEN fields to VOEvent
RAVEN is being approved to send alerts, so we need to add some additional fields to the existing VOEvent to properly communicate with astronomers. These fields are described in Description of feature requestemfollow/userguide!65. There are seven additional fields.
External GCN Notice ID,
External Alert Type, and
External Search are essential and should be required.
Time and Sky Position Coincidence FAR,
Combined Sky Map, and
Time Difference are optional and should be included only if the values are available.
Time Coincidence FAR needs to be included if the search field of the external event is
SubGRB, but not if the search is
SNEWS since that value won't be calculated in that case. If that isn't possible then
Time Coincidence FAR could be made optional in general. Note that if
Time and Sky Position Coincidence FAR is available,
Time Coincidence FAR will alway be available as well.
I can't see any default values that could be set that wouldn't cause confusion.
This template should be used whenever we are creating a VOEvent and
EM_COINC is present in the superevent's labels.