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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.

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

38585 results found.

  1. GRB 090422: Liverpool Telescope observations
  2. GRB 090418B: Suzaku WAM observation of the prompt emission
  3. GRB 090422: Swift detection of a burst
  4. GRB 090418C: Fermi GBM Detection
  5. GRB 090418A: Swift/UVOT Detection of the Neighbouring Galaxy
  6. Swift-BAT trigger 349718 is not a burst
  7. GRB 090418B: GRAS002 observatios
  8. GRB 090417B: Optical observation
  9. GRB 090418A: optical observations
  10. GRB 090418B: GROND observations
  11. GRB 090419: Swift/UVOT Observations
  12. GRB 090418B: Faulkes Telescope North observations
  13. GRB 090418A: Swift/UVOT Observations
  14. GRB 090417B: Swift/UVOT Upper Limits
  15. GRB 090417B Correction to the BAT refined analysis position
  16. GRB 090419: Swift-XRT refined analysis
  17. Konus-Wind observation of GRB 090418B
  18. GRB 090418: Erratum in GCN 9168
  19. GRB 090419: GROND detection of afterglow candidate
  20. GRB 090418: Optical observations with MITSuME Okayama and Ishigaki 1m telescope
  21. VLA radio detection of GRB 090418
  22. VLA radio upper limit on GRB 090417B
  23. GRB 090419: Enhanced Swift-XRT position
  24. GRB 090418: Swift XRT refined analysis
  25. GRB 090418A: ROTSE-III Refined Analysis
  26. GRB 090419: Swift detection of a burst
  27. VLA observations of short burst GRB 090417A
  28. GRB 090417B: Gemini imaging
  29. GRB 090417B: Galaxy redshift
  30. GRB 090417B: Swift-XRT refined analysis
  31. GRB 090418: Enhanced Swift-XRT position
  32. GRB 090417B: Swift-BAT further refined analysis
  33. GRB 090418 Lick Redshift
  34. GRB 090418: ROTSE-III Confirmation of Optical Counterpart
  35. GRB 090418: Swift detection of a burst with optical afterglow
  36. GRB 090418 OA candidate
  37. GRB 090411B: Suzaku WAM observation of the prompt emission
  38. GRB 090411A: Suzaku WAM observation of the prompt emission
  39. GRB 090417B: Subaru NIR Observations
  40. GRB 090417B: Liverpool Telescope observations
  41. GRB 090417B: MITSuME Okayama optical upper limits
  42. GRB090417B: Xinglong TNT optical upper limit
  43. GRB 090417B: optical observations
  44. GRB090417B: optical observations
  45. GRB 090417B: Swift-BAT refined analysis
  46. GRB 090417B: Swift detection of a burst
  47. GRB 090417: Swift detection of a short burst
  48. GRB 090412: Fermi GBM detection
  49. GRB 090411B: Fermi GBM detection
  50. GRB 090411A: Fermi GBM detection
  51. GRB 090410: Suzaku WAM observation of the prompt emission
  52. GRB 090410: GROND upper limits
  53. Fermi GBM trigger 261106787 is not a GRB
  54. GRB 090410: MITSuME optical upper limits
  55. GRB 090408b: IPN Triangulation
  56. GRB 090328b: IPN Triangulation
  57. GRB 090410: Swift detection of a burst
  58. Konus-Wind and Konus-RF observations of GRB 090408b
  59. GRB 090409: Fermi GBM detection
  60. GRB090408, RIMOTS optical upper limits
  61. GRB 090408: Xinglong TNT optical Upper Limit
  62. Swift-BAT trigger 348781: almost certainly not a burst
  63. Fermi GBM Detection of a weak source
  64. GRB 090408B: MASTER II-Kourovka optical observations
  65. GRB 090408: Swift detection of a burst
  66. GRB 090407: GROND upper limits
  67. GRB 090407: VLT observations
  68. GRB 090407: Swift-XRT refined analysis
  69. GRB 090407: Swift UVOT Upper Limits
  70. GRB 090407: Enhanced Swift-XRT position
  71. Konus-Wind and Konus-RF observations of GRB 090406
  72. GRB 090407: ROTSE-III Optical Limits
  73. GRB 090407: Swift detection of a burst
  74. GRB 090404: millimeter detection
  75. GRB 090404: nIR observations at Calar Alto
  76. GRB 090405: Fermi GBM Detection
  77. GRB 090403: Fermi GBM detection
  78. GRB 090404: GROND upper limits
  79. GRB 090404: further NOT observations
  80. Swift/UVOT observations of GRB090404
  81. GRB 090404: NOT observations
  82. GRB 090404: optical observations at BOOTES-3 and 1.5-m OSN
  83. GRB 090404: Swift-XRT Team refined analysis
  84. GRB 090404: Xinglong TNT optical Upper Limit
  85. GRB 090404: Enhanced Swift-XRT position
  86. Fermi Gamma-ray Burst Monitor trigger 260428446 is not a GRB
  87. GRB 090404: Swift detection of a burst
  88. GRB 090401A: Suzaku WAM observation of the prompt emission
  89. GRB 090401B: Suzaku WAM observation of the prompt emission
  90. Konus-Wind observation of GRB 090401B
  91. GRB 090401B: Xinglong TNT optical Upper Limit
  92. GRB 090401B: VLA radio upper limit
  93. GRB 090401B: Upper limits of MITSuME optical observation
  94. GRB090401B, RIMOTS optical upper limits
  95. GRB 090401B: NOT optical observations
  96. GRB 090328: Fermi-LAT refined analysis
  97. Swift/UVOT observations of GRB090401B
  98. GRB 090401B: AGILE refined analysis
  99. Swift/UVOT observations of GRB090401B
  100. GRB 090401B: Swift XRT Refined Analysis

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