In the months after an event, academics and experts in different fields begin research, experiment, and studying various topics associated with the event. Academic articles appear in scholarly journals. The writing becomes more focused on analysis.
Years after an event, scholars complete more research. they often summarize their findings in books. Scholarly journals have technical language; analysis of statistics and trends; theoretical evaluation; and biographies. Books have in-depth discussion of the subject; background information; historical analysis; and bibliographies.