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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"

43684 results found.

  1. GRB 120711A: an bright long GRB detected with INTEGRAL
  2. Continued Skynet/PROMPT observations of GRB120711A
  3. Swift detection of GRB 120711B or a new Galactic transient
  4. Skynet/PROMPT Observations of GRB120711A
  5. GRB 120709A: Fermi GBM detection
  6. GRB 120709A: Swift-XRT observations
  7. GRB 120709A: Matched filter analysis of Fermi-LAT data
  8. GRB 120709A: optical afterglow limits
  9. Konus-Wind observation of GRB 120707A
  10. IPN Triangulation of GRB 120707A
  11. GRB 120709A: Fermi-LAT Detection
  12. GRB 120707A: Fermi GBM Detection of a Bright Burst
  13. GRB 120624B: mm detection at PdBI
  14. GRB 120703A: SMARTS optical/IR observations
  15. GRB 120703A: Swift/UVOT Detection
  16. GRB 120703A: Fermi GBM detection
  17. GRB 120703A: Swift-XRT refined Analysis
  18. GRB 120703A: Enhanced Swift-XRT position
  19. GRB 120703A: Swift-BAT refined analysis
  20. GRB 120624B Suzaku WAM observation of the prompt emission
  21. Konus-Wind observation of GRB 120703A
  22. GRB 120703A: NOT optical observation
  23. GRB 120701A: Swift/UVOT Detection
  24. GRB 120701A: GROND detection of the afterglow
  25. GRB 120703A: Swift detection of a bright burst with an optical afterglow
  26. Swift Trigger 525554 is noise
  27. GRB 120701A: Swift-XRT afterglow detection and analysis
  28. GRB 120630A: Swift-BAT/-XRT/-UVOT refined analysis
  29. GRB 120701A: Swift-BAT refined analysis
  30. GRB 120630A: NOT optical source within the XRT error circle
  31. Swift Trigger 525554 is probably not a GRB
  32. GRB120624B: Chandra observations and afterglow detection
  33. Fermi Gamma-ray Burst Monitor trigger 120628.973 is not a GRB
  34. GRB 120624B Further Swift-XRT analysis
  35. GRB 120624B: Swift/UVOT Upper Limits
  36. Watcher follow-up observations of IGR J17062-6143 (Swift trigger 525148)
  37. GRB 120624B: Further analysis of the HAWKI observations
  38. GRB 120624B: Swift-XRT observations
  39. GRB 120624B: GROND upper limits
  40. XRF 120626B: MAXI/GSC detection
  41. GRB 120624B: NIR counterpart candidate from HAWKI
  42. Skynet/PROMPT observations of IGR J17062-6143 (Swift trigger 525148)
  43. Swift detection of Ginga 0834-430
  44. GRB 120624B: NOT optical upper limit
  45. Swift detection of IGR J17062-6143
  46. GRB 120624B: optical observations
  47. GRB 120624B, Swift-BAT refined analysis
  48. Konus-Wind observation of GRB 120624B
  49. GRB 120624B: Swift detection of a burst
  50. GRB 120624A: Fermi GBM observation
  51. GRB 120624B: Fermi-LAT Detection
  52. Konus-Wind observation of GRB 120624A
  53. GRB 120624B: Fermi GBM detection
  54. IPN Triangulation of GRB 120624A (short/intense)
  55. Swift Trigger 524949: Noise fluctuation near a galaxy
  56. GRB 120622A: MAXI/GSC detection
  57. Swift trigger 524642 / SwJ1910.2-0546
  58. GRB 120602A: Suzaku WAM observation of the prompt emission
  59. Konus-Wind observation of GRB 120617A
  60. IPN Triangulation of GRB 120617A (short/intense)
  61. Swift Trigger 524642 is Swift J1910.2-0546
  62. Trigger 524584: Swift detection of Algol
  63. Swift triggers (#524542) on a Galactic source
  64. Konus-Wind observation of GRB 120602A
  65. IPN Triangulation of GRB 120602A (long/very bright)
  66. GRB 120614A: MAXI/GSC detection of a burst
  67. GRB 120612A: optical observations
  68. GRB 120612A: Swift/UVOT observations
  69. GRB 120612A: Swift-XRT refined Analysis
  70. GRB 120612A: Swift-BAT refined analysis
  71. GRB 120612A: Enhanced Swift-XRT position
  72. GRB 120612A: BOOTES-3 optical upper limit
  73. GRB 120612A: Swift detection of a burst
  74. GRB 120603A: Suzaku WAM observation of the prompt emission
  75. GBM triggers 120604.526 & 120604.399 were not GRBs
  76. Konus-Wind observation of GRB 120603A
  77. IPN Triangulation of short GRB 120603A
  78. Fermi GBM trigger 120602.539 is not a GRB
  79. Konus-Wind observation of GRB 120528B
  80. GRB 120519A: Suzaku WAM observation of the prompt emission
  81. GRB 120528C: MAXI/GSC detection
  82. GRB 120521C redshift estimate
  83. Fermi Gamma-ray Burst Monitor trigger 120527.573 is not a GRB
  84. GRB 120528B: MAXI/GSC detection
  85. GRB 120512A: Suzaku WAM observation of the prompt emission
  86. GRB 120521C: EVLA Localization of Afterglow
  87. GRB 120521C: EVLA 22 GHz Detection
  88. GRB120521B: SSO 2.3m upper limits
  89. Konus-Wind observation of GRB 120522A
  90. IPN triangulation of GRB 120522A (long/intense)
  91. GRB 120521B: Fermi GBM observation
  92. GRB 120521A: ATCA 34GHz upper limit
  93. GRB 120521C: Early Tautenburg limits
  94. GRB 120521C: EVLA 22 GHz Upper Limit
  95. GRB 120521A: GROND Upper limits
  96. GRB 120521C: Swift-XRT refined Analysis
  97. GRB 120521C: Swift-BAT refined analysis
  98. GRB 120521C: Keck Observations
  99. GRB 120521C: MASTER optical limit
  100. GRB 120521B: GROND Upper limits

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