Discover

Details
Published on Thursday, 25 March 2010 10:47

Do More

Take a Course

Level One: Become a pulsar data analyst.  If you are a high school student or STEM teacher, or an undergraduate student or faculty, then we invite you to join the PSC and help us discover new pulsars!  Twice each year we host a 6-week online workshop. Each week, you'll learn something new about pulsars and how to analyze discovery data. By the end you should be a certified pulsar hunter. You can also elect to complete the course asynchronously, using our forums or Slack channel to post homework and ask questions. It's more fun to join the workshops and participate in weekly live chats with cool astronomers and mentors, but we know it's not always possible.

College Credit:  If you are a high school Junior or Senior you can also register for  3 hours of college credit from West Virginia University.

Discover Useful Resources

Explore the Knowledge Base

 

Learn What's Happening

Events

Find information about the many upcoming public meetings and scientific symposia.

Announcements

Follow the Newsletter for special Announcement.

Debug Console

Close2 MBRequestSessionTimelineDatabase26Events25
$_GET
Array( ) Array(

)
$_POST
Array( ) Array(

)
$_COOKIE
Array( ) Array(

)
$_SERVER
Array( TEMP => /var/www/tmp, TMPDIR => /var/www/tmp, TMP => /var/www/tmp, PATH => /usr/lo... Array(
TEMP => /var/www/tmp,
TMPDIR => /var/www/tmp,
TMP => /var/www/tmp,
PATH => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin,
USER => apache,
HOME => /usr/share/httpd,
SCRIPT_NAME => /index.php,
REQUEST_URI => /discover,
QUERY_STRING => ,
REQUEST_METHOD => GET,
SERVER_PROTOCOL => HTTP/1.1,
GATEWAY_INTERFACE => CGI/1.1,
REDIRECT_URL => /discover,
REMOTE_PORT => 56589,
SCRIPT_FILENAME => /var/www/pulsars/index.php,
SERVER_ADMIN => root@localhost,
CONTEXT_DOCUMENT_ROOT => /var/www/pulsars,
CONTEXT_PREFIX => ,
REQUEST_SCHEME => https,
DOCUMENT_ROOT => /var/www/pulsars,
REMOTE_ADDR => 3.135.249.11,
SERVER_PORT => 443,
SERVER_ADDR => 157.182.3.38,
SERVER_NAME => pulsars.nanograv.org,
SERVER_SOFTWARE => Apache/2.4.37 (Rocky Linux) OpenSSL/1.1.1k,
SERVER_SIGNATURE => ,
HTTP_HOST => pulsars.nanograv.org,
HTTP_ACCEPT_ENCODING => gzip, br, zstd, deflate,
HTTP_USER_AGENT => Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com),
HTTP_ACCEPT => */*,
SSL_TLS_SNI => pulsars.nanograv.org,
HTTPS => on,
SCRIPT_URI => https://pulsars.nanograv.org/discover,
SCRIPT_URL => /discover,
UNIQUE_ID => ZqRwfZ5kcf15UGdKo5YydgAAABE,
HTTP_AUTHORIZATION => ,
REDIRECT_STATUS => 200,
REDIRECT_SSL_TLS_SNI => pulsars.nanograv.org,
REDIRECT_HTTPS => on,
REDIRECT_SCRIPT_URI => https://pulsars.nanograv.org/discover,
REDIRECT_SCRIPT_URL => /discover,
REDIRECT_UNIQUE_ID => ZqRwfZ5kcf15UGdKo5YydgAAABE,
REDIRECT_HTTP_AUTHORIZATION => ,
FCGI_ROLE => RESPONDER,
PHP_SELF => /index.php,
REQUEST_TIME_FLOAT => 1722052733.3776,
REQUEST_TIME => 1722052733
)
separator ⇒ .
orderBy ⇒ id
orderDir ⇒ asc
1 ⇒ registerIP
2 ⇒ access
always ⇒
renew ⇒
tracker.sid ⇒ c6568ca59c9cf48b209ff3d395ebd855
tracker.ssid ⇒ c6568ca59c9cf48b209ff3d395ebd855
tracker.rsid ⇒ c6568ca59c9cf48b209ff3d395ebd855
  • site 0.043 seconds (+0.043); 2.00 MB (+2.000) - afterInitialise
  • site 0.055 seconds (+0.013); 2.00 MB (0.000) - afterRoute
  • site 0.085 seconds (+0.030); 2.00 MB (0.000) - afterDispatch
  • site 0.091 seconds (+0.006); 2.00 MB (0.000) - beforeRenderModule mod_search (Search)
  • site 0.094 seconds (+0.002); 2.00 MB (0.000) - afterRenderModule mod_search (Search)
  • site 0.094 seconds (+0.000); 2.00 MB (0.000) - beforeRenderModule mod_custom (Footer)
  • site 0.094 seconds (+0.001); 2.00 MB (0.000) - afterRenderModule mod_custom (Footer)
  • site 0.094 seconds (+0.000); 2.00 MB (0.000) - beforeRenderModule mod_custom (Footer social links)
  • site 0.094 seconds (+0.000); 2.00 MB (0.000) - afterRenderModule mod_custom (Footer social links)
  • site 0.095 seconds (+0.000); 2.00 MB (0.000) - beforeRenderModule mod_menu (Main Menu)
  • site 0.103 seconds (+0.008); 2.00 MB (0.000) - afterRenderModule mod_menu (Main Menu)
  • site 0.104 seconds (+0.001); 2.00 MB (0.000) - onAfterRender
  • site 0.105 seconds (+0.001); 2.00 MB (0.000) - sessionStore
2 MB

26 Queries Logged: 0.017528057098389 seconds

  1. SELECT data
      FROM `jos_session`
      WHERE `session_id` = '88b9b18153495ff40818ff51e2dd7fde'
  2. DELETE
      FROM `jos_session`
      WHERE `session_id` = '88b9b18153495ff40818ff51e2dd7fde'
  3. SELECT data
      FROM `jos_session`
      WHERE `session_id` = 'c6568ca59c9cf48b209ff3d395ebd855'
  4. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_languages'
  5. SELECT session_id
      FROM `jos_session`
      WHERE `session_id` = 'c6568ca59c9cf48b209ff3d395ebd855'
      LIMIT 1
  6. INSERT INTO `jos_session` (`session_id`,`client_id`,`time`,`ip`)
      VALUES ('c6568ca59c9cf48b209ff3d395ebd855','0','1722052733','3.135.249.11')
  7. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_members'
  8. SELECT b.id, b.title
      FROM `jos_usergroups` AS `a`
      LEFT JOIN jos_usergroups AS b
      ON b.lft <= a.lft
      AND b.rgt >= a.rgt
      WHERE `a`.`id` = '1'
  9. SELECT *
      FROM `jos_viewlevels`
  10. SELECT folder AS type,element AS name,protected,params
      FROM `jos_extensions`
      WHERE `enabled` >= '1'
      AND `type` = 'plugin'
      AND `state` >= '0'
      AND `access` IN ('1','1')
      ORDER BY `ordering` ASC
  11. SELECT m.id,m.menutype,m.title,m.alias,m.note,m.path AS route,m.link,m.type,m.level,m.language,m.browserNav,m.access,m.params,m.home,m.img,m.template_style_id,m.component_id,m.parent_id,e.element AS component
      FROM `jos_menu` AS `m`
      LEFT JOIN jos_extensions AS e
      ON e.extension_id = m.component_id
      WHERE `m`.`published` = '1'
      AND `m`.`parent_id` > '0'
      AND `m`.`client_id` = '0'
      ORDER BY `m`.`lft` ASC
  12. SELECT jos_template_styles.id,jos_template_styles.home,jos_template_styles.template,jos_template_styles.params,jos_extensions.protected
      FROM `jos_template_styles`
      INNER JOIN jos_extensions
      ON jos_extensions.element = jos_template_styles.template
      WHERE `jos_template_styles`.`client_id` = '0'
      AND `jos_extensions`.`enabled` = '1'
      AND `jos_extensions`.`type` = 'template'
      AND jos_extensions.`client_id` = `jos_template_styles`.`client_id`
      ORDER BY `home` DESC
  13. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_content'
  14. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_categories'
  15. SELECT a.rules
      FROM `jos_assets` AS `a`
      WHERE `a`.`id` = '1'
      GROUP BY a.id, a.rules, a.lft
  16. SELECT b.rules
      FROM `jos_assets` AS `a`
      LEFT JOIN jos_assets AS b
      ON b.lft <= a.lft
      AND b.rgt >= a.rgt
      WHERE `a`.`name` = 'com_content'
      GROUP BY b.id, b.rules, b.lft
      ORDER BY `b`.`lft` ASC
  17. SELECT a.*,a.id,a.asset_id,a.title,a.alias,a.title_alias,a.introtext,a.fulltext,
      CASE WHEN badcats.id IS NULL THEN a.state ELSE 0 END AS state,a.mask,a.catid,a.created,a.created_by,a.created_by_alias,
      CASE WHEN a.modified IS NULL THEN a.created ELSE a.modified END AS modified,a.modified_by,a.checked_out,a.checked_out_time,a.publish_up,a.publish_down,a.images,a.urls,a.attribs,a.version,a.parentid,a.ordering,a.metakey,a.metadesc,a.access,a.hits,a.metadata,a.featured,a.language,a.xreference,c.title AS category_title,c.alias AS category_alias,c.access AS category_access,u.name AS author,parent.title AS parent_title,parent.id AS parent_id,parent.path AS parent_route,parent.alias AS parent_alias,ROUND(v.rating_sum / v.rating_count, 0) AS rating,v.rating_count AS rating_count
      FROM `jos_content` AS `a`
      LEFT JOIN jos_categories AS c
      ON c.id = a.catid
      LEFT JOIN jos_users AS u
      ON u.id = a.created_by
      LEFT JOIN jos_categories as parent
      ON parent.id = c.parent_id
      LEFT JOIN jos_content_rating AS v
      ON a.id = v.content_id
      LEFT
      OUTER JOIN (SELECT cat.id as id
      FROM jos_categories AS cat JOIN jos_categories AS parent
      ON cat.lft BETWEEN parent.lft
      AND parent.rgt
      WHERE parent.extension = 'com_content'
      AND parent.published <= 0
      GROUP BY cat.id) AS badcats
      ON badcats.id = c.id
      WHERE `a`.`id` = '22'
      AND (`a`.`publish_up` IS NULL OR `a`.`publish_up` <= '2024-07-27 03:58:53' )
      AND (`a`.`publish_down` IS NULL OR `a`.`publish_down` >= '2024-07-27 03:58:53' )
      AND `a`.`state` IN ('1','2')
  18. SELECT c.*,
      CASE WHEN CHAR_LENGTH(c.alias) THEN CONCAT_WS(':', c.id, c.alias) ELSE c.id END as slug
      FROM `jos_categories` AS `c`
      LEFT JOIN jos_categories AS s
      ON (s.lft <= c.lft
      AND s.rgt >= c.rgt) OR (s.lft > c.lft
      AND s.rgt < c.rgt)
      LEFT JOIN (SELECT cat.id as id
      FROM jos_categories AS cat JOIN jos_categories AS parent
      ON cat.lft BETWEEN parent.lft
      AND parent.rgt
      WHERE parent.extension = 'com_content'
      AND parent.published != 1
      GROUP BY cat.id) AS badcats
      ON badcats.id = c.id
      WHERE (`c`.`extension` = 'com_content' OR `c`.`extension` = 'system' )
      AND `c`.`access` IN ('1','1')
      AND `c`.`published` = '1'
      AND `s`.`id` = '2'
      AND badcats.id is null
      GROUP BY c.id,c.asset_id,c.access,c.alias,c.checked_out,c.checked_out_time,c.created_time,c.created_user_id,c.description,c.extension,c.hits,c.language,c.level,c.lft,c.metadata,c.metadesc,c.metakey,c.modified_time,c.note,c.params,c.parent_id,c.path,c.published,c.rgt,c.title,c.modified_user_id
      ORDER BY `c`.`lft` ASC
  19. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_users'
  20. SELECT m.id,m.title,m.module,m.position,m.content,m.showtitle,m.params,mm.menuid,e.protected
      FROM `jos_modules` AS `m`
      LEFT JOIN jos_modules_menu AS mm
      ON mm.moduleid = m.id
      LEFT JOIN jos_extensions AS e
      ON e.element = m.module
      AND e.client_id = m.client_id
      WHERE `m`.`published` = '1'
      AND `e`.`enabled` = '1'
      AND (`m`.`publish_up` IS NULL OR `m`.`publish_up` <= '2024-07-27 03:58:53' )
      AND (`m`.`publish_down` IS NULL OR `m`.`publish_down` >= '2024-07-27 03:58:53' )
      AND `m`.`access` IN ('1','1')
      AND `m`.`client_id` = '0'
      AND (`mm`.`menuid` = '41' OR `mm`.`menuid` <= '0' )
      ORDER BY `m`.`position` ASC,`m`.`ordering` ASC
  21. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_search'
  22. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_courses'
  23. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_events'
  24. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_newsletter'
  25. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_psrsearch'
  26. UPDATE `jos_session`
      SET `data` = '__default|a:9:{s:15:\"session.counter\";i:1;s:19:\"session.timer.start\";i:1722052733;s:18:\"session.timer.last\";i:1722052733;s:17:\"session.timer.now\";i:1722052733;s:8:\"registry\";O:23:\"Hubzero\\Config\\Registry\":2:{s:7:\"\0*\0data\";O:8:\"stdClass\":1:{s:1:\"0\";s:7:\"session\";}s:9:\"separator\";s:1:\".\";}s:4:\"user\";C:17:\"Hubzero\\User\\User\":22:{a:1:{s:5:\"guest\";b:1;}}s:11:\"tracker.sid\";s:32:\"c6568ca59c9cf48b209ff3d395ebd855\";s:12:\"tracker.ssid\";s:32:\"c6568ca59c9cf48b209ff3d395ebd855\";s:12:\"tracker.rsid\";s:32:\"c6568ca59c9cf48b209ff3d395ebd855\";}',`time` = '1722052733',`ip` = '3.135.249.11'
      WHERE `session_id` = 'c6568ca59c9cf48b209ff3d395ebd855'
  • onAfterInitialise — Method — plgSystemP3p::onAfterInitialise → /core/plugins/system/p3p/p3p.php:21
  • onAfterInitialise — Method — plgSystemRemember::onAfterInitialise → /core/plugins/system/remember/remember.php:20
  • onAfterInitialise — Method — plgSystemHubzero::onAfterInitialise → /core/plugins/system/hubzero/hubzero.php:21
  • onAfterInitialise — Method — plgSystemXFeed::onAfterInitialise → /core/plugins/system/xfeed/xfeed.php:21
  • onAfterInitialise — Method — plgSystemSupergroup::onAfterInitialise → /core/plugins/system/supergroup/supergroup.php:113
  • onAfterInitialise — Method — plgSystemReferrerpolicy::onAfterInitialise → /core/plugins/system/referrerpolicy/referrerpolicy.php:21
  • onAfterRoute — Method — plgSystemJquery::onAfterRoute → /core/plugins/system/jquery/jquery.php:21
  • onAfterRoute — Method — plgSystemSpamjail::onAfterRoute → /core/plugins/system/spamjail/spamjail.php:21
  • onAfterRoute — Method — plgSystemIncomplete::onAfterRoute → /core/plugins/system/incomplete/incomplete.php:21
  • onAfterRoute — Method — plgSystemUnconfirmed::onAfterRoute → /core/plugins/system/unconfirmed/unconfirmed.php:21
  • onAfterRoute — Method — plgSystemUnapproved::onAfterRoute → /core/plugins/system/unapproved/unapproved.php:21
  • onAfterRoute — Method — plgSystemPassword::onAfterRoute → /core/plugins/system/password/password.php:21
  • onContentPrepare — Method — plgContentLoadmodule::onContentPrepare → /core/plugins/content/loadmodule/loadmodule.php:35
  • onContentPrepare — Method — plgContentEmailcloak::onContentPrepare → /core/plugins/content/emailcloak/emailcloak.php:25
  • onContentPrepare — Method — plgContentPagebreak::onContentPrepare → /core/plugins/content/pagebreak/pagebreak.php:35
  • onContentPrepare — Method — plgContentXhubtags::onContentPrepare → /core/plugins/content/xhubtags/xhubtags.php:25
  • onContentPrepare — Method — plgContentFormatwiki::onContentPrepare → /core/plugins/content/formatwiki/formatwiki.php:63
  • onContentPrepare — Method — plgContentFormathtml::onContentPrepare → /core/plugins/content/formathtml/formathtml.php:105
  • onContentPrepare — Method — plgContentExternalhref::onContentPrepare → /core/plugins/content/externalhref/externalhref.php:41
  • onContentBeforeDisplay — Method — plgContentPagenavigation::onContentBeforeDisplay → /core/plugins/content/pagenavigation/pagenavigation.php:25
  • onContentBeforeDisplay — Method — plgContentVote::onContentBeforeDisplay → /core/plugins/content/vote/vote.php:32
  • onAfterDispatch — Method — plgSystemMobile::onAfterDispatch → /core/plugins/system/mobile/mobile.php:22
  • onAfterDispatch — Method — plgSystemDebug::onAfterDispatch → /core/plugins/system/debug/debug.php:60
  • onAfterDispatch — Method — PlgSystemHighlight::onAfterDispatch → /core/plugins/system/highlight/highlight.php:25
  • onAfterRender — Method — plgSystemSef::onAfterRender → /core/plugins/system/sef/sef.php:21