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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"

32756 results found.

  1. GRB 081105: GROND Upper Limits
  2. Radio observation of GRB 080523 with ATCA
  3. Radio observation of GRB 080520 with ATCA
  4. UVOT/Swift observations of GRB081105
  5. Swift-XRT observations of GRB 081105
  6. Radio observation of GRB 080516 with ATCA
  7. GRB 081025: Fermi GBM observation
  8. GRB 081104: GROND Detection of the Optical/NIR Afterglow Candidate?
  9. GRB 081104: refined XRT analysis
  10. GRB 081104: Swift-BAT refined analysis
  11. GRB081104: Swift/UVOT Upper Limits
  12. Fermi-GBM detection of a Solar Flare
  13. Fermi Detection of GRB 081102
  14. GRB 081104 : Faulkes Telescope South observations
  15. GRB 081104: Swift-XRT position
  16. Radio observation of GRB 080130 with ATCA
  17. GRB 081102: MASTER prompt optical limit
  18. GRB 081102: Swift-XRT refined analysis
  19. GRB 081102: Swift/UVOT refined analysis
  20. GRB 081102: Swift-BAT refined analysis
  21. Radio observation of GRB 080218b with ATCA
  22. Radio observation of GRB 080229a with ATCA
  23. GRB 081102: MASTER VWF promt observation
  24. GRB 081102: OPTIMA-Burst optical upper limit
  25. SGR 0501+4516: optical observations in August
  26. GRB 081101 (or SGR 0623-0006 ): Fermi GBM detection
  27. SGR 0623-0006 or GRB 081101: Swift-XRT refined analysis
  28. SGR 0623-0006 or GRB 081101: Swift-BAT/-XRT refined analysis
  29. GRB 081024B: BTA deep optical observations
  30. GRB 081028: CrAO optical observations
  31. GRB 081024B: new Swift-XRT observations
  32. Radio observation of GRB 080229b with ATCA
  33. GRB 081029, SMARTS optical/IR afterglow observations
  34. GRB 081024B: VLA radio observation
  35. GRB 081029: PROMPT Detections
  36. GRB 081029: Redshift Confirmation from Gemini-South
  37. GRB 081029: Swift-BAT refined analysis
  38. GRB081029: Swift XRT refined analysis
  39. GRB 081025: Suzaku WAM observation of the prompt emission
  40. GRB 081024B: Suzaku WAM observation of the prompt emission
  41. GRB 081028: GROND Confirmation of the Optical/NIR Afterglow
  42. GRB 081029: REM observations
  43. Radio observation of GRB 080303 with ATCA
  44. Radio observation of GRB 080411 with ATCA
  45. GRB 081029: UVES/VLT Absorption Redshift
  46. GRB 081029: GROND Detection of the Optical/NIR Afterglow
  47. GRB 081029: ROTSE-III Detection of Optical Counterpart
  48. GRB 081028: Magellan redshift
  49. GRB081028: UVOT detection of a brightening afterglow
  50. Swift UVOT observations of GRB081028
  51. GRB 081028: Swift-XRT refined analysis
  52. GRB 081028, Swift-BAT refined analysis
  53. GRB 081028: TAROT Calern observatory optical observations
  54. GRB 081028: optical observations at the NOT
  55. GRB 081028: GROND Detection of the Optical/NIR Afterglow Candidate
  56. Fermi LAT/GBM short-hard GRB 081024B: Possible TLS Afterglow (Corrected)
  57. Fermi LAT/GBM short-hard GRB 081024B: Possible TLS Afterglow
  58. GRB 081025: TLS upper limits
  59. GRB 081024: No radio detection with the VLA
  60. GRB081024B: P200 Observations
  61. GRB 081024B: Swift-XRT further observations
  62. GRB 081025 BAT refined analysis
  63. Swift UVOT observations of GRB081025
  64. Swift UVOT observations of GRB081024B
  65. Konus-Wind observation of GRB 081025
  66. GRB 081025: Swift-XRT position
  67. GRB 081024B: Swift-XRT observations
  68. GRB 081024B: Fermi Gamma-ray Burst Monitor detection
  69. Swift UVOT observations of GRB 081024
  70. GRB 081024: Swift-XRT refined analysis
  71. GRB 081024, Swift-BAT refined analysis
  72. GRB 081024: Faulkes Telescope North optical observations
  73. GRB 081024: KAIT Optical Limits
  74. GRB 081024: Early Super-LOTIS Observations
  75. GRB 081024A: ROTSE-III Optical Limits
  76. GRB 081022, Swift-BAT refined analysis
  77. GRB 081016A: Swift-XRT refined analysis
  78. GRB 081012: Swift-XRT Refined Analysis
  79. Swift trigger 332287 is not a GRB
  80. GRB 081017, Swift-BAT refined analysis
  81. GRB 081017: REM early observations
  82. GRB 081016B, Swift-BAT refined analysis
  83. GRB 081016B: Swift/UVOT Upper Limits
  84. GRB 081011: Swift XRT refined analysis
  85. GRB 081016B: Swift-XRT Team refined Analysis
  86. GRB 081016B: ROTSE-III Optical Limits
  87. GRB 081016: Swift-XRT candidate afterglow detection
  88. Detection of flare star Algol in Swift-BAT slew data
  89. GRB 081012: GROND upper limits
  90. GRB 081008: Galaxy associated with z=1.967 absorber
  91. GRB 081012: Fermi GBM detection
  92. GRB 081007 and GRB 081007B: Fermi GBM detection
  93. GRB 080430: optical observations
  94. GRB 081008 optical upper limit
  95. GRB 081012: Observations from NOT
  96. GRB 081012: Swift/UVOT analysis of initial observations
  97. GRB 081012: Swift/XRT detection
  98. GRB 081012, Swift-BAT refined analysis
  99. GRB 081012: ROTSE-III Optical Limits
  100. Revised table for GRB 081011 UVOT detections

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