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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. See the documentation for help with subscribing to or submitting Circulars.

Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
Advanced Search

To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

45765 results found.

  1. GRB 140801A: AAO optical observations
  2. GRB 140801A: GROND Afterglow detection, unbroken decay
  3. GRB140801A: Swift/XRT further observations
  4. GRB 140730A: GROND Upper limits
  5. GRB 140801A: BTA confirmation of redshift
  6. GRB 140801A: Swift/UVOT Upper Limits
  7. GRB 140801A: Swift-XRT observations
  8. Konus-Wind observation of GRB 140801A
  9. GRB 140801A : Virtual Telescope optical observations
  10. GRB 140801A: Fermi GBM observation
  11. GRB 140801A: Redshift from the 10.4m GTC telescope
  12. GRB 140801A: NOT afterglow confirmation
  13. IPN triangulation of GRB 140801A (Fermi trigger 428612396)
  14. GRB 140801A: archival upper limits on the host galaxy
  15. GRB 140801A (FERMI trigger 428612396): MASTER brigth OT discovery
  16. GRB 140730A, Swift-BAT refined analysis
  17. GRB 140709B: TShAO optical upper limit
  18. GRB 140709A, the review of the sky area in plate archives
  19. Swift Trigger 607945: possible noise event in the direction of NGC2559
  20. Konus-Wind observation of GRB 140729A
  21. GRB 140730A: LCO-Sutherland observations
  22. GRB 140730A: Swift-XRT refined Analysis
  23. GRB 140730A: Swift/UVOT Upper Limits
  24. GRB 140730A: Enhanced Swift-XRT position
  25. GRB 140730A: Prompt enhanced Swift-XRT position
  26. GRB 140730A: Swift detection of a burst
  27. Radio upper limit on the GRB 140713A with the GMRT
  28. GRB 140729A: iPTF optical upper limit
  29. Swift Trigger 607506 is probably noise
  30. GRB 140729A: Swift-XRT and UVOT observations
  31. IPN Triangulation of GRB 140729A
  32. GRB 140729A: Fermi-GBM detection
  33. Correction to Fermi-LAT GCN Circular 16633
  34. GRB 140729A Tiled Swift observations
  35. GRB 140729A: Fermi-LAT detection
  36. Trigger 607399: Swift detection of SGR1806-20
  37. GRB 140723A: Swift-XRT and UVOT observations
  38. GRB 140723A: LCO-Sutherland optical candidate retraction
  39. GRB 140723A: MASTER optical observation
  40. Konus-Wind observation of GRB 140723A
  41. GRB 140723A: LCO-Sutherland optical candidate
  42. GRB 140723A: Fermi GBM detection
  43. IPN Triangulation of GRB 140723A
  44. GRB 140723A Tiled Swift observations
  45. GRB 140723A: Fermi-LAT detection
  46. GRB 140709B: Swift/UVOT Upper Limits
  47. Konus-Wind observation of GRB 140721A
  48. IPN Triangulation of GRB 140721A
  49. GRB 140719B: Swift XRT observation
  50. GRB 140719A: Swift/UVOT Upper Limits
  51. GRB 140721A: Fermi GBM detection
  52. GRB 140716A: Confirmation of the Swift-XRT afterglow
  53. GRB 140719B, Swift-BAT refined analysis
  54. GRB 140716A: GROND confirmation of the afterglow
  55. GRB 140719A, Swift-BAT refined analysis
  56. GRB 140719A: FTS observations
  57. GRB 140719A: GROND Afterglow candidate
  58. GRB 140719B: Zadko observatory - Gingin optical observations
  59. GRB 140719B: Swift detection of a burst
  60. GRB 140719A: Swift-XRT refined Analysis
  61. GRB 140719A: Enhanced Swift-XRT position
  62. GRB 140719A: Swift detection of a burst
  63. Konus-Wind observation of GRB 140716A
  64. GRB 140716A: Swift/UVOT Upper Limits
  65. GRB 140713A: AMI 15 GHz detection
  66. GRB 140713A: 10.4-m GTC deep optical observation
  67. GRB 140716A: GROND afterglow candidate
  68. GRB 140716A: Swift-XRT detection of an afterglow candidate
  69. GRB 140716A: A Fermi GBM Detection
  70. GRB 140716A BAT refined analysis
  71. Swift observations of a flare from UX Ari
  72. GRB 140716A found in ground analysis of Swift-BAT data
  73. GRB 140709A: Possible AMI 15 GHz detection
  74. Swift detection of UX Ari
  75. GRB 140713A: CARMA mm detection
  76. GRB 140714A: Fermi GBM detection
  77. Radio upper limits on the GRB 140703A with the GMRT
  78. GRB 140713A: Fermi GBM detection
  79. GRB 140713A: Swift-XRT refined Analysis
  80. GRB 140713A: Swift/UVOT Upper Limits
  81. GRB 140713A: NOT upper limits
  82. GRB 140713A : Xinglong TNT upper limit
  83. GRB 140713A: Enhanced Swift-XRT position
  84. GRB 140713A: Swift-BAT refined analysis
  85. GRB 140713A: T100 observations
  86. GRB 140710A: iTelescope.Net T11 Optical Observation
  87. GRB 140713A: Swift detection of a burst
  88. Swift Trigger 604111 is not a GRB
  89. GRB 140710B: Fermi GBM detection
  90. GRB 140710B: improved INTEGRAL position
  91. Fermi GBM Observations of SGR 1935+2154
  92. GRB 140710B: a long GRB detected with INTEGRAL
  93. GRB 140709A: Continued RATIR Optical and NIR Observations
  94. GRB 140710A: Swift-XRT refined Analysis
  95. GRB 140710A: Swift-BAT refined analysis
  96. GRB 140710A: Swift/UVOT Upper Limits
  97. GRB 140709B: update of Khureltogot optical upper limit
  98. GRB 140710A: Gemini-N redshift of likely host
  99. GRB 140710A: Enhanced Swift-XRT position
  100. GRB 140710A: RATIR Optical and NIR Observations

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