$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 12 books and host of the Tom Woods Show, which libertarians listen to every weekday. Get a free copy of National Divorce: The Peaceful Solution to Irreconcilable Differences..

$bios: Array
(
    [0] => Tom Woods [send him mail; visit his website] is the New York Times bestselling author of 12 books and host of the Tom Woods Show, which libertarians listen to every weekday. Get a free copy of National Divorce: The Peaceful Solution to Irreconcilable Differences..
)

Tom Woods [send him mail; visit his website] is the New York Times bestselling author of 12 books and host of the Tom Woods Show, which libertarians listen to every weekday. Get a free copy of National Divorce: The Peaceful Solution to Irreconcilable Differences..