The sidebar of the Author page comes right beside the main content area of the Author page. The main content area of the author page will display the author information and then the listings by the authors. The sidebar can contain any sidebar widget. You can decide what you want to show your visitors when they are reading the bio of a particular author on the author page.
The widgets that can be used in the Author Page sidebar are:
Categories, Pages ,T – Recent comments, T – Advanced search, T – browse by category, tags, T- flickr photos, T – in the neighborhood , T – Instant search ,T – Listing owner, T – Popular post, T – Login box, T- search by miles, T – recent reviews, T – Testimonials, T – Social media,T – Twitter feed.