Knowledge Base

Main page

Gotcha Plots

The plots on this page are a gallery of known noise and interference. Don’t be fooled by plots with these periods–the subplots can look a lot like pulsar candidates! 1086 ms and its harmonic 543 ms are a source of interference that has been popping up. It’s very bright and pulsar-like in the pulse profile, time domain, and subband plots, but be sure to check the DM curve. Remember that something at zero is RFI! 543 ms (and periods very close to that) are harmonics of the known 1086 ms RFI. Watch out for them!

 

1198 ms – We see this persistent source of interference all over the place1198 ms – We see this persistent source of interference all over the place

467 ms (Found by Lucas Boylard from South Harrison High School)...467 ms (Found by Lucas Boylard from South Harrison High School)...

... and its harmonic 933 ms (Found by Kirston Smith from Nicholas County High School)... and its harmonic 933 ms (Found by Kirston Smith from Nicholas County High School)

1086 ms ...1086 ms ...

... and its harmonic 543 ms... and its harmonic 543 ms

1081 ms1081 ms

599 ms599 ms

16.6 ms16.6 ms

0 Dislike

Last updated @ on

Comments on this entry

There are no comments on this entry.

Post a comment

Post a comment

Comments are closed on this entry.

Please keep comments relevant to this entry. Comments deemed offensive or inappropriate may be removed.

Debug Console

Close2 MBRequestSessionTimelineDatabase40Events23
$_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 => /kb/usefulresources/gotcha-plots,
QUERY_STRING => ,
REQUEST_METHOD => GET,
SERVER_PROTOCOL => HTTP/1.1,
GATEWAY_INTERFACE => CGI/1.1,
REDIRECT_URL => /kb/usefulresources/gotcha-plots,
REMOTE_PORT => 65470,
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 => 13.58.135.0,
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/kb/usefulresources/gotcha-plots,
SCRIPT_URL => /kb/usefulresources/gotcha-plots,
UNIQUE_ID => ZqRxcp5kcf15UGdKo5Yy1wAAAAE,
HTTP_AUTHORIZATION => ,
REDIRECT_STATUS => 200,
REDIRECT_SSL_TLS_SNI => pulsars.nanograv.org,
REDIRECT_HTTPS => on,
REDIRECT_SCRIPT_URI => https://pulsars.nanograv.org/kb/usefulresources/gotcha-plots,
REDIRECT_SCRIPT_URL => /kb/usefulresources/gotcha-plots,
REDIRECT_UNIQUE_ID => ZqRxcp5kcf15UGdKo5Yy1wAAAAE,
REDIRECT_HTTP_AUTHORIZATION => ,
FCGI_ROLE => RESPONDER,
PHP_SELF => /index.php,
REQUEST_TIME_FLOAT => 1722052978.1148,
REQUEST_TIME => 1722052978
)
separator ⇒ .
orderBy ⇒ id
orderDir ⇒ asc
1 ⇒ registerIP
2 ⇒ access
always ⇒
renew ⇒
tracker.sid ⇒ 0e22fef9665ce6c2118d89eb6b3d040e
tracker.ssid ⇒ 0e22fef9665ce6c2118d89eb6b3d040e
tracker.rsid ⇒ 0e22fef9665ce6c2118d89eb6b3d040e
session.token ⇒ f58302088270cfc3f65ddbf701a8471e
  • site 0.038 seconds (+0.038); 2.00 MB (+2.000) - afterInitialise
  • site 0.061 seconds (+0.023); 2.00 MB (0.000) - afterRoute
  • site 0.090 seconds (+0.029); 2.00 MB (0.000) - afterDispatch
  • site 0.097 seconds (+0.007); 2.00 MB (0.000) - beforeRenderModule mod_search (Search)
  • site 0.100 seconds (+0.002); 2.00 MB (0.000) - afterRenderModule mod_search (Search)
  • site 0.100 seconds (+0.000); 2.00 MB (0.000) - beforeRenderModule mod_custom (Footer)
  • site 0.100 seconds (+0.001); 2.00 MB (0.000) - afterRenderModule mod_custom (Footer)
  • site 0.100 seconds (+0.000); 2.00 MB (0.000) - beforeRenderModule mod_custom (Footer social links)
  • site 0.101 seconds (+0.000); 2.00 MB (0.000) - afterRenderModule mod_custom (Footer social links)
  • site 0.101 seconds (+0.000); 2.00 MB (0.000) - beforeRenderModule mod_menu (Main Menu)
  • site 0.112 seconds (+0.012); 2.00 MB (0.000) - afterRenderModule mod_menu (Main Menu)
  • site 0.113 seconds (+0.001); 2.00 MB (0.000) - onAfterRender
  • site 0.114 seconds (+0.001); 2.00 MB (0.000) - sessionStore
2 MB

40 Queries Logged: 0.030481338500977 seconds

  1. SELECT data
      FROM `jos_session`
      WHERE `session_id` = 'ff9457db6bffb90758b8daa3e623f581'
  2. DELETE
      FROM `jos_session`
      WHERE `session_id` = 'ff9457db6bffb90758b8daa3e623f581'
  3. SELECT data
      FROM `jos_session`
      WHERE `session_id` = '0e22fef9665ce6c2118d89eb6b3d040e'
  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` = '0e22fef9665ce6c2118d89eb6b3d040e'
      LIMIT 1
  6. INSERT INTO `jos_session` (`session_id`,`client_id`,`time`,`ip`)
      VALUES ('0e22fef9665ce6c2118d89eb6b3d040e','0','1722052978','13.58.135.0')
  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 extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_kb'
  13. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_tags'
  14. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_categories'
  15. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`extension` = 'com_kb'
      AND `jos_categories`.`alias` = 'usefulresources'
      AND `jos_categories`.`published` = '1'
  16. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`extension` = 'com_kb'
      AND `jos_categories`.`alias` = 'gotcha-plots'
      AND `jos_categories`.`published` = '1'
  17. 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
  18. SELECT *
      FROM `jos_kb_articles`
      WHERE `jos_kb_articles`.`alias` = 'gotcha-plots'
      AND `jos_kb_articles`.`category` = '35'
  19. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`id` = '35'
  20. SELECT jos_tags_object.label,jos_tags.*
      FROM `jos_tags`
      INNER JOIN jos_tags_object
      ON jos_tags_object.tagid = jos_tags.id
      WHERE `jos_tags_object`.`tbl` = 'kb'
      AND `jos_tags_object`.`objectid` = '60'
      AND `jos_tags`.`admin` NOT IN ('1')
      GROUP BY jos_tags_object.label,jos_tags.id
  21. SELECT category,count(*) AS articles
      FROM `jos_kb_articles`
      WHERE `jos_kb_articles`.`state` = '1'
      AND `jos_kb_articles`.`access` IN ('1','1')
      GROUP BY category
  22. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`extension` = 'com_kb'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1')
      AND `jos_categories`.`parent_id` = '1'
      ORDER BY `title` ASC
  23. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '34'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1')
  24. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '19'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1')
  25. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '18'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1')
  26. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '31'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1')
  27. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '32'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1')
  28. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '33'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1')
  29. SELECT *
      FROM `jos_categories`
      WHERE `jos_categories`.`parent_id` = '35'
      AND `jos_categories`.`published` = '1'
      AND `jos_categories`.`access` IN ('1','1')
  30. SELECT *
      FROM `jos_kb_comments`
      WHERE `jos_kb_comments`.`entry_id` = '60'
      AND `jos_kb_comments`.`state` IN ('1','3')
  31. SELECT *
      FROM `jos_kb_comments`
      WHERE `jos_kb_comments`.`id` = '0'
  32. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_users'
  33. 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 04:02:58' )
      AND (`m`.`publish_down` IS NULL OR `m`.`publish_down` >= '2024-07-27 04:02:58' )
      AND `m`.`access` IN ('1','1')
      AND `m`.`client_id` = '0'
      AND (`mm`.`menuid` = '82' OR `mm`.`menuid` <= '0' )
      ORDER BY `m`.`position` ASC,`m`.`ordering` ASC
  34. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_search'
  35. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_content'
  36. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_courses'
  37. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_events'
  38. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_newsletter'
  39. SELECT extension_id AS id,element AS "option",params,enabled
      FROM `jos_extensions`
      WHERE `type` = 'component'
      AND `element` = 'com_psrsearch'
  40. UPDATE `jos_session`
      SET `data` = '__default|a:10:{s:15:\"session.counter\";i:1;s:19:\"session.timer.start\";i:1722052978;s:18:\"session.timer.last\";i:1722052978;s:17:\"session.timer.now\";i:1722052978;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:\"0e22fef9665ce6c2118d89eb6b3d040e\";s:12:\"tracker.ssid\";s:32:\"0e22fef9665ce6c2118d89eb6b3d040e\";s:12:\"tracker.rsid\";s:32:\"0e22fef9665ce6c2118d89eb6b3d040e\";s:13:\"session.token\";s:32:\"f58302088270cfc3f65ddbf701a8471e\";}',`time` = '1722052978',`ip` = '13.58.135.0'
      WHERE `session_id` = '0e22fef9665ce6c2118d89eb6b3d040e'
  • 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
  • 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