$post_author: WP_User Object
(
    [data] => stdClass Object
        (
            [ID] => 98
            [user_login] => [email protected]
            [user_pass] => $P$B0JpxPi2iB9Ql15erV6Sw.O1gQfOg3.
            [user_nicename] => thomas-woods
            [user_email] => [email protected]
            [user_url] => 
            [user_registered] => 2011-11-30 16:11:09
            [user_activation_key] => 1527899773:$P$B8/mI7FKTWPhbdsL1MwlVX6HUdTo/e/
            [user_status] => 0
            [display_name] => Tom Woods
            [type] => wpuser
        )

    [ID] => 98
    [caps] => Array
        (
            [author] => 1
        )

    [cap_key] => wp_capabilities
    [roles] => Array
        (
            [0] => author
        )

    [allcaps] => Array
        (
            [upload_files] => 1
            [edit_posts] => 1
            [edit_published_posts] => 1
            [publish_posts] => 1
            [read] => 1
            [level_2] => 1
            [level_1] => 1
            [level_0] => 1
            [delete_posts] => 1
            [delete_published_posts] => 1
            [email_single_user] => 1
            [email_multiple_users] => 1
            [tablepress_edit_tables] => 1
            [tablepress_delete_tables] => 1
            [tablepress_list_tables] => 1
            [tablepress_add_tables] => 1
            [tablepress_copy_tables] => 1
            [tablepress_import_tables] => 1
            [tablepress_export_tables] => 1
            [tablepress_access_options_screen] => 1
            [tablepress_access_about_screen] => 1
            [author] => 1
        )

    [filter] => 
    [site_id:WP_User:private] => 1
)

get_the_author_meta: 

$bio: Tom Woods [send him mail; visit his website] is the New York Times bestselling author of 13 books and host of the Tom Woods Show, which libertarians listen to every weekday. Before you spend money on your next book, check out Tom's free books at TomsFreeBooks.com.

$bios: Array
(
    [0] => Tom Woods [send him mail; visit his website] is the New York Times bestselling author of 13 books and host of the Tom Woods Show, which libertarians listen to every weekday. Before you spend money on your next book, check out Tom's free books at TomsFreeBooks.com.
)

Tom Woods [send him mail; visit his website] is the New York Times bestselling author of 13 books and host of the Tom Woods Show, which libertarians listen to every weekday. Before you spend money on your next book, check out Tom's free books at TomsFreeBooks.com.