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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"

45674 results found.

  1. GRB 060522: Swift detection of a burst with possible optical afterglow
  2. GRB 060512: reanalysis of optical spectra
  3. GRB 060515: NIR observation
  4. GRB 060210: Jet Break in the XRT light curve
  5. GRB 060516: Refined analysis of the Swift-BAT burst
  6. GRB 060512: TNG optical spectroscopy
  7. GRB 060516: Swift detection of a burst
  8. GRB060515: P200 NIR Observations
  9. GRB 060505 BAT refined analysis
  10. GRB 060515 BAT refined analysis
  11. GRB 060512: TAROT optical observation
  12. GRB 060515: Swift/XRT Team refined analysis
  13. GRB 060515: Swift/UVOT Upper Limits
  14. GRB 060515: Swift/XRT position
  15. GRB 060515: Super-LOTIS Observations
  16. GRB060515: Swift/UVOT initial observation
  17. GRB 060515: TAROT optical observation
  18. GRB 060515: ROTSE-III Optical Limits
  19. GRB 060515: Swift detection of a burst
  20. VLT optical spectroscopy of GRB 060512
  21. Swift/UVOT observations of GRB060512.
  22. GRB 060512: Subaru NIR observation
  23. GRB060512: Swift XRT Team refined analysis
  24. GRB 060512: 1.54m Kuiper Observations
  25. GRB 060512: Detection of NIR afterglow
  26. GRB 060512: P60 Observations
  27. GRB 060512: Swift-BAT Refined Analysis
  28. GRB 060505 - OT candidate + galaxy spectrum
  29. GRB 060512: optical decay
  30. GRB 060512: REM NIR observations
  31. GRB060512 - SDSS Pre-Burst Observations
  32. GRB060512 Name Correction: LT Afterglow detection
  33. GRB060512: Liverpool Telescope Afterglow detection
  34. GRB 060512: Swift detection of a burst with an optical afterglow
  35. GRB 060510A: Swift/UVOT Detection of an Optical Afterglow
  36. GRB 060505: X-ray afterglow - Correction -
  37. GRB 060505: X-ray afterglow
  38. Konus-Wind observation of GRB 060510A
  39. GRB060418: optical observations
  40. GRB 060428a, SMARTS optical/IR afterglow detection
  41. GRB060510B: Swift XRT refined analysis
  42. GRB 060510B: Swift/UVOT Upper Limits
  43. GRB 060510A: Refined analysis of the Swift-BAT burst
  44. GRB 060510B: Swift-BAT Refined Analysis
  45. GRB060510A: XRT refined analysis
  46. GRB060510 - SDSS Pre-Burst Observations
  47. GRB 060510b: Redshift
  48. GRB060510B : Faulkes North Telescope detection
  49. GRB 060510B : Planned XMM-Newton observation
  50. GRB 060510b: Gemini NIR observations
  51. GRB 060510B: Super-LOTIS Observations
  52. GRB 060510b: NIR observations
  53. GRB 060510B: Coordinate correction
  54. GRB 060510B: MDM Observations and candidate OT
  55. GRB 060510B: Swift detection of a burst
  56. GRB 060510: Swift detection of a burst with optical transient
  57. GRB060507: optical afterglow detection
  58. GRB060502B: improvement in the XRT afterglow position
  59. GRB 060507: Final Refined analysis of the Swift-BAT burst
  60. GRB 060507: Swift-BAT Refined Analysis
  61. GRB 060505: PROMPT Observations
  62. GRB 060507: Swift/UVOT Upper Limits
  63. GRB 060507: Swift XRT Team Refined Analysis
  64. GRB 060507: MDM Optical Upper Limit
  65. GRB060507: Swift XRT position
  66. GRB 060507: Swift detection of a burst
  67. GRB 060429: Suzaku WAM observation
  68. GRB060505: Swift/UVOT Observations
  69. GRB 060505: Swift XRT Team Refined Analysis
  70. GRB060425: new MASTER survey method
  71. GRB 060306: Further Analysis of SOAR and APO NIR Observations
  72. GRB 060505: Swift XRT afterglow canditate position
  73. GRB 060502b: Second epoch Gemini observations
  74. GRB 060505: Swift-BAT detection of a weak burst
  75. GRB 060428B: spectroscopy
  76. GRB 060502B: optical observations
  77. GRB 060502B: AROMA refined photometric calibration
  78. GRB 060502B MDM Follow-up Observation
  79. GRB 060502b: Gemini imaging and spectroscopy
  80. GRB060502A, optical observation
  81. GRB 060502B: Swift/UVOT upper limits
  82. GRB 060502A: Swift/UVOT source detection
  83. GRB 060429: Refined IPN error box and Konus-Wind spectrum
  84. GRB 060502B: MDM Optical Observation
  85. GRB 060502B: AROMA optical observations
  86. GRB 060502B: Refined analysis of the Swift-BAT short burst
  87. GRB060502B: Swift XRT Team refined analysis
  88. Short GRB 060502B: Tautenburg Observation
  89. GRB 060427B Milagro GeV/TeV Observations
  90. GRB 060502A: TTT Observations
  91. GRB060502B: correction to XRT position
  92. GRB 060501: P60 Observations and Candidate Retraction
  93. GRB 060502B: Xinglong optical observation
  94. GRB 060502B: Swift detection of a short burst
  95. GRB060502: Swift-XRT refined analysis
  96. GRB 060502: Swift-BAT refined analysis
  97. GRB060502: Gemini spectroscopy
  98. GRB 060502: APO Spectroscopic Observations
  99. GRB060501: Swift UVOT followup observations
  100. GRB060502: Super-LOTIS Observations

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