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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"

872 results found.

  1. IPN Triangulation of GRB 140306A
  2. IPN triangulation of GRB 140226A, a possible GRB counterpart to iPTF14yb
  3. GRB 140129B: MASTER OT early light curve
  4. GRB 140108A: Fermi GBM detection
  5. IPN Triangulation of GRB 131118A
  6. GRB 131029A: Fermi GBM observation
  7. GRB 131002B: Swift detection of a burst
  8. IPN Observations of GRB 130925A
  9. GRB 130831A: Swift detection of a burst with an optical counterpart
  10. IPN triangulation of GRB 130828A - error box
  11. GRB 130828A: Swift XRT and UVOT observations
  12. IPN triangulation of GRB130821A
  13. GRB 130816B: Enhanced Swift-XRT position
  14. GRB 130803A: Swift detection of a burst
  15. Konus-Wind observation of GRB 130609B
  16. GRB 130605A: Swift/UVOT Detection
  17. GRB 130604A: Swift-XRT refined Analysis
  18. GRB 130604A: ISON-NM optical upper limit
  19. IPN Triangulation of GRB 130521B
  20. Refined IPN Triangulation of GRB 130502B
  21. Konus-Wind observation of GRB 130505A
  22. GRB 130502B: Swift/UVOT Upper Limits
  23. GRB 100728A: GROND host detection and X-shooter redshift
  24. GRB 121211A: Swift-BAT refined analysis
  25. IPN Triangulation of GRB 121118B (long/intense)
  26. GRB 121027A: Swift-BAT refined analysis
  27. GRB 120922A: Swift-BAT refined analysis
  28. IPN Triangulation of long GRB 120919B
  29. IPN Triangulation of long GRB 120919A
  30. IPN Triangulation of GRB 120911B (long/bright)
  31. GRB 120911A: Fermi/LAT upper limit
  32. GRB 120908A and GRB 120909A : Fermi/LAT upper limit
  33. GRB 120817A: FTN and FTS observations
  34. GRB 120728B: Fermi GBM detection
  35. IPN Triangulation of GRB 120728B (long/intense)
  36. IPN Triangulation of GRB 120707A
  37. IPN Triangulation of GRB 120602A (long/very bright)
  38. GRB 120328B: Fermi-LAT Observations
  39. GRB 120326A: Swift-BAT refined analysis
  40. GRB 120312A: Swift/UVOT Upper Limits
  41. GRB 120219A: MASTER prompt and early optical limit and OT discussion
  42. GRB 120219A: MASTER-NET prompt and early optical observations
  43. IPN Triangulation of GRB 111016B (long duration, intense)
  44. GRB 111016A: Swift-BAT refined analysis
  45. IPN triangulation of GRB 110918A (long duration, extremely intense)
  46. IPN triangulation of GRB110825A (very intense, long-duration)
  47. IPN triangulation of GRB110815A (long, intense)
  48. IPN triangulation of GRB 110808B (short/hard/intense)
  49. IPN triangulation of GRB110802A (short/hard burst)
  50. GRB110731A: MOA optical observations of the steeply fading afterglow
  51. IPN triangulation of GRB110618A (long duration, extremely intense)
  52. GRB 110521A: Swift/UVOT Upper Limits
  53. GRB 110328A / Swift J164449.3+573451: MASTER pre, prompt and follow-up observations
  54. IPN triangulation of the bright GRB110406A
  55. GRB 110205A: WSRT radio observation
  56. IPN Localization of GRB101130 (possible short duration burst)
  57. GRB 101123A: Fermi GBM detection
  58. GRB 100906A: Fermi GBM observation
  59. IPN triangulation of GRB 100826A
  60. IPN triangulation of GRB100324B
  61. GRB 100302A: Optical observations at Crni Vrh
  62. Konus-Wind observation of GRB 100116A
  63. IPN Triangulation of GRB091120
  64. IPN Triangulation and Konus-Wind observaions of GRB090727B
  65. GRB 090618: Suzaku WAM observation of the prompt emission
  66. GRB090530: Swift XRT refined analysis
  67. IPN triangulation of very bright GRB 090427
  68. GRB 090425: Fermi GBM detection
  69. GRB 090408b: IPN Triangulation
  70. GRB 090328b: IPN Triangulation
  71. GRB 090323: WSRT Radio Detection
  72. IPN Triangulation of GRB090315 and Tupi Detection of Muon Increase
  73. Swift-BAT trigger 345396 is not a GRB
  74. Konus-Wind observation of GRB 090217
  75. IPN localization of GRB 090217
  76. GRB 081222: Gemini-N confirmation of redshift z=2.77
  77. GRB 081118: Swift-BAT refined analysis
  78. GRB 081024: Swift-XRT refined analysis
  79. GRB 081007: Swift-XRT Team refined analysis
  80. Swift-BAT refined analysis of AXP 1E1547.0-5408 (Trigger 330353)
  81. GRB080913: Swift/UVOT Upper Limits
  82. GRB 080913: Swift detection of a burst
  83. GRB 080906, Swift-BAT refined analysis
  84. GRB 080727B: Swift/UVOT Upper Limits
  85. GRB 080727B: Swift-XRT refined analysis
  86. GRB 080727B: Swift detection of a bright burst
  87. GRB 080725, Swift-BAT refined analysis
  88. GRB 080723B : a long GRB detected with INTEGRAL
  89. GRB 080613B, Swift-BAT refined analysis
  90. GRB080520: Swift/UVOT observations
  91. IPN triangulation of bright GRB 080513
  92. GRB 080514B: SuperAGILE/IPN GRB Localization
  93. GRB 080405: Mars Oddysey and Swift-BAT detection, possible host galaxy
  94. GRB 080319b light curve by Pi-of-the-Sky
  95. GRB 080307: Swift/UVOT Upper Limits
  96. GRB 080307: Swift detection of a burst
  97. GRB080303: Swift XRT refined analysis
  98. IPN localization of GRB 080211
  99. IPN localization of very hard GRB 080204
  100. IPN triangulation of GRB080122

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