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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"

32757 results found.

  1. GRB 061217, SMARTS optical observations
  2. GRB061217: Swift/UVOT refined analysis.
  3. GRB 061217: optical observations at Calar Alto
  4. GRB061217 - Swift/XRT refined analysis
  5. GRB 061217, Further Swift-BAT refined analysis of the short hard burst
  6. GRB 061217, Swift-BAT refined analysis
  7. GRB 061217: Magellan Observations
  8. GRB 061217: REM prompt observations
  9. GRB 061217: ROTSE-III Optical Limits
  10. GRB 061210: MDM Follow-up Observation
  11. GRB061210: Swift/UVOT observations
  12. Swift-BAT Trigger 250908 is a Cosmic Ray Shower event
  13. GRB 061210: Optical sources near XRT positions
  14. GRB 061210: Swift XRT analysis - Possible counterparts
  15. GRB 061210 : Faulkes North Telescope optical limit
  16. GRB 061214(?): ROTSE-III Optical Limits
  17. GRB 061210: Suzaku WAM observation of the prompt emission
  18. Swift/BAT trigger #250033 is due to a known source during loss of
  19. GRB 061213: MASTER-VWF-Kislovodsk OT candidate retraction
  20. GRB 061210: Gemini/GMOS Observations
  21. GRB 061126: Radio Observations
  22. GRB061210: Radio Observations
  23. GRB061201, VLT optical decay: correction
  24. GRB 061126: a GRB detected off-axis by INTEGRAL
  25. GRB 061202: Suzaku WAM observation of the prompt emission
  26. GRB 061210: MDM Observation
  27. GRB 061210, Swift-BAT refined analysis of the SHB
  28. GRB 061210: Swift-BAT detection of a short burst
  29. Optical Afterglow observations of GRB 061126
  30. GRB061126: optical observations
  31. GRB 060926: MASTER: discovery of the optical flare
  32. GRB061126: update on the Swift-XRT afterglow light curve
  33. Corrections for Swift/UVOT Exposure Times for GRBs 061110B and 061121
  34. GRB 061201: UVOT Observations of a Fading Optical Afterglow
  35. GRB 061202: TORTOREM optical upper limits
  36. GRB 061201: VLT optical decay
  37. GRB 061201: SOAR Confirmation of Candidate Afterglow
  38. GRB061126 : NMSU 1.0m observations
  39. GRB 061202: Swift XRT refined analysis
  40. GRB061202: FRAM early follow-up limit
  41. Konus-Wind observation of GRB 061201
  42. GRB061202: optical/NIR observations with REM
  43. GRB061202: Swift/UVOT Upper Limits
  44. GRB 061202, Swift-BAT refined analysis
  45. GRB 061201: Swift XRT Team refined analysis
  46. GRB 061201: VLT optical observations
  47. GRB 061201: Initial UVOT Observations
  48. GRB 061201, Swift-BAT refined analysis of the SHB
  49. GRB 061122: GETS observation
  50. GRB 061121, SMARTS optical/IR observations
  51. GRB 061121: flattening of the decay
  52. INT+WFC observations of GRB 061126
  53. GRB 061126: Possible Jet Break
  54. GRB 061121: Second Epoch ATCA Radio Observations
  55. GRB 061126: RAPTOR Optical Detection During Gamma-Ray Emission
  56. Swift XRT on-board boresight update
  57. GRB 061121: ATCA & WSRT Radio Observations
  58. GRB061121: optical observations
  59. GRB 061126: Early Super-LOTIS Observations
  60. GRB 061126: optical observation
  61. RHESSI Spectrum of GRB061126
  62. GRB 061126: Tautenburg afterglow observations
  63. GRB061126: Optical afterglow observations from MIRO
  64. GRB061126: Optical afterglow observations from MIRO
  65. GRB 061126 : SDSS Pre-Burst Observations
  66. GRB 061126: Swift-XRT refined analysis
  67. GRB 061126: Swift/UVOT Observations
  68. GRB 061126, Swift-BAT refined analysis
  69. GRB 061126: SARA Observations
  70. GRB 061126: Early Detection of the IR Afterglow
  71. GRB 061126: Faulkes Telescope North Optical Observations
  72. GRB 061121: MDM Continued Monitoring
  73. GRB 061122: Confirmation of X-ray/Optical Afterglow
  74. GRB 061121: MDM Continuing Optical Decay
  75. GRB061121: optical observations
  76. GRB 061122: Candidate Optical Afterglow
  77. GRB 061121: Ep,i - Eiso correlation
  78. GRB 061121: MDM Optical Decay
  79. GRB061122: Swift/UVOT Optical Observations
  80. GRB 061121: ART detection in Ic
  81. GRB061121: P60 Observations
  82. Radio detection of GRB 061121
  83. GRB061122: Swift-XRT position
  84. Konus-Wind observation of GRB 061122
  85. GRB 061121: MDM Optical Observations
  86. GRB 061121 declared "Burst of Interest" by Swift team
  87. RHESSI Spectrum of GRB061121
  88. Konus-Wind and Konus-A observations of GRB 061121
  89. INTEGRAL results on GRB 061122
  90. GRB 061121: Swift/UVOT Observations
  91. GRB 061121: Swift-XRT Team Refined Analysis
  92. GRB 061121, Swift-BAT refined analysis
  93. GRB061121, optical observation
  94. GRB 061121: Optical observation at the KANATA 1.5m telescope
  95. GRB 061121: Faulkes Telescope North Optical Observation
  96. GRB061121: Spectroscopic Redshift
  97. GRB 061121: ROTSE-III Confirmation of Optical Counterpart
  98. GRB 060605: NIR Observations
  99. GRB 050915B: optical afterglow
  100. GRB 060111B: Swift UVOT Refined Magnitudes

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