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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"

32714 results found.

  1. Possible GRB 080315: XRT non-detection of afterglow
  2. GRB 080320 : Faulkes Telescope North Observations
  3. GRB 080319A : Liverpool and Faulkes Telescopes Observations
  4. GRB080319A: MAGIC telescope GeV observation
  5. Swift-BAT trigger 309665 is not a GRB
  6. GRB 080420A: ROTSE-III Optical Limits on a possible short burst
  7. GRB 080420?: Swift detection of a possible short burst
  8. GRB 080413A: Suzaku/WAM and Swift/BAT joint spectral analysis
  9. GRB 080413B: Rapid PROMPT Observations
  10. Swift XRT and UVOT observations of GRB080414
  11. GRB 080319B: Jet Break, Energetics, Supernova
  12. GRB 080413B: Faulkes Telescope South optical afterglow observations
  13. GRB 080413A: Liverpool Telescope and Faulkes Telescope South optical observations
  14. GRB 080413A: Suzaku WAM observation of the prompt emission
  15. GRB 080413B: Suzaku WAM observation of the prompt emission
  16. GRB 080413A: MOA-II optical afterglow observations
  17. GRB 080319B: Continued Gemini-N monitoring
  18. GRB 080414: RTT150 optical observations
  19. GRB 080414 Watcher observations
  20. VLA radio observations of GRB 080413B
  21. GRB 080413A: Gemini-South Spectroscopy
  22. GRB 080413B: Gemini-South Spectroscopy
  23. VLA radio observations of GRB 080413A
  24. GRB 080413B: Ep,i-Eiso correlation
  25. GRB080413B
  26. Swift-BAT spectral lag analysis of GRB 080413B
  27. GRB 080413a, SMARTS optical/IR afterglow observations
  28. GRB 080413B: Swift XRT refined analysis
  29. GRB080413A: Swift/UVOT observations
  30. GRB 080413B, Swift-BAT refined analysis
  31. GRB 080413A: Swift-XRT refined analysis
  32. GRB 080413A, Swift-BAT refined analysis
  33. GRB 080413A Bootes observation
  34. GRB 080413A: VLT/UVES redshift
  35. GRB 080413B: VLT redshift
  36. GRB080413B: REM NIR & Optical Observation
  37. GRB 080413B: GROND detection of afterglow in all bands
  38. GRB 080413A: REM detection of the NIR Afterglow
  39. GRB 080413: ROTSE-III Detection of Optical Counterpart
  40. GRB 080411: Swift/UVOT refined analysis
  41. GRB 080411, Swift-BAT refined analysis
  42. GRB 080411: Swift-XRT Refined Analysis
  43. Konus-Wind observation of GRB 080411
  44. GRB 080411: VLT redshift
  45. GRB 080411: GROND detection of optical afterglow candidate
  46. GRB080330: MAGIC telescope GeV observation
  47. GRB 080330: Swift-XRT refined position retraction
  48. GRB 080409: Swift-BAT refined analysis
  49. GRB 080408: GROND detection of optical/NIR afterglow candidate
  50. GRB 080330 optical observations
  51. Swift/UVOT observations of GRB080409
  52. GRB 080409: Swift XRT refined analysis
  53. UVOT/Swift Observations of GRB080408
  54. GRB 080408: Swift-XRT position of a possible afterglow
  55. GRB 080409: REM optical/NIR observations
  56. GRB 080408: Analysis of AGILE Gamma-ray data
  57. GRB 080319A: Early RAPTOR optical limits
  58. GRB 080319B: HST observations
  59. GRB 080330: RAPTOR detection of prompt optical flash
  60. GRB 080319B: Potential Jet Break Observed by Swift-XRT and UVOT
  61. GRB 080405: Swift-BAT refined analysis
  62. GRB 080405: Swift-XRT position
  63. GRB 080325: optical upper limit
  64. GRB 080328: GAO 150cm telescope Optical Observation
  65. GRB080330: Improved Swift XRT Position
  66. GRB 080330: Prompt PROMPT Observations
  67. GRB080330: optical observations
  68. GRB 080319B: TORTORA light curve (Correction)
  69. GRB080328, RIMOTS optical upper limit
  70. GRB080330: optical observations
  71. GRB080330: Swift XRT refined analysis
  72. GRB 080330: REM optical observations
  73. GRB 080330, SMARTS optical/IR afterglow observations
  74. GRB 080330 Swift-UVOT refined analysis
  75. GRB 080328: Suzaku WAM observation of the prompt emission
  76. GRB080330: TNT optical observations
  77. GRB 080330, Swift-BAT refined analysis
  78. Konus-Wind observation of GRB 080328
  79. GRB 080330: Redshift Confirmation from Hobby-Eberly Telescope Spectroscopy
  80. GRB080330: LOAO R-band Detection
  81. GRB 080330: GROND Observations
  82. GRB 080330: NOT redshift
  83. GRB 080330A: PAIRITEL Infrared Detections
  84. GRB 080330: error in reported XRT position
  85. GRB 080330: Liverpool Telescope Optical observations
  86. GRB 080330A: ROTSE-III Detection of Optical Counterpart
  87. GRB 080319B: Continued Gemini-South followup and possible host galaxy
  88. GRB 080328: BTA optical imaging and spectroscopy
  89. GRB 080328, Swift-BAT refined analysis
  90. GRB 080328: Swift XRT refined analysis
  91. GRB 080325, Swift-BAT refined analysis
  92. Swift/UVOT observations of GRB080328
  93. GRB080325 - I and z-band Imaging
  94. GRB080328: Faulkes Telescope North observations
  95. GRB 080325: Subaru detection of NIR afterglow candidate
  96. GRB080310, late-time photometry with LBT
  97. GRB 080325: MITSuME Akeno optical upper limits
  98. GRB080325: XRT Refined Analysis
  99. GRB 080325: GROND Observations
  100. GRB080319B: optical observations

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