$post_author: WP_User Object
(
    [data] => stdClass Object
        (
            [ID] => 82
            [user_login] => [email protected]
            [user_pass] => $P$BGWhZIrSmd7n8SV0tIekyxy/nhsP84.
            [user_nicename] => karen-kwiatkowski
            [user_email] => [email protected]
            [user_url] => 
            [user_registered] => 2011-11-30 15:11:47
            [user_activation_key] => 1541678611:$P$BgjL4W3.6wFOAz/cgMCDBmycwnvI9U1
            [user_status] => 0
            [display_name] => Karen Kwiatkowski
            [type] => wpuser
        )

    [ID] => 82
    [caps] => Array
        (
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        )

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

    [allcaps] => Array
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            [delete_published_posts] => 1
            [email_single_user] => 1
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    [filter] => 
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)

get_the_author_meta: 

$bio: Karen Kwiatkowski, Ph.D. [send her mail], a retired USAF lieutenant colonel, farmer and aspiring anarcho-capitalist. She ran for Congress in Virginia's 6th district in 2012.

$bios: Array
(
    [0] => Karen Kwiatkowski, Ph.D. [send her mail], a retired USAF lieutenant colonel, farmer and aspiring anarcho-capitalist. She ran for Congress in Virginia's 6th district in 2012.
)

Karen Kwiatkowski, Ph.D. [send her mail], a retired USAF lieutenant colonel, farmer and aspiring anarcho-capitalist. She ran for Congress in Virginia's 6th district in 2012.