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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"

15271 results found.

  1. GRB 060908: Danish/DFOSC optical observations
  2. GRB 060908 - SDSS Pre-burst Observations
  3. GRB 060908: REM optical prompt observation
  4. GRB 060904A: Suzaku/WAM observation of the prompt emission
  5. GRB060906 , optical observation
  6. GRB 060906: Swift/XRT Refined Analysis
  7. GRB 060906: Swift-UVOT observations
  8. GRB 060906: KAIT observations
  9. GRB 060904A Milagro GeV/TeV Observations
  10. Konus-Wind observation of GRB 060904A
  11. GRB 060904B: Swift-XRT refined analysis
  12. GRB060904B: Watcher observations
  13. GRB 060904B BOOTES-IR and 1.5m OSN observations
  14. GRB060904B - SDSS Pre-Burst Observations
  15. GRB060904 - SDSS Pre-Burst Observations
  16. 060901: Swift UVOT followup observations
  17. Konus-Wind observation of GRB 060901
  18. GRB 060901: further INTEGRAL results
  19. GRB 060814: Suzaku/WAM observation of the prompt emission
  20. GRB060826 - SDSS Pre-Burst Observations
  21. GRB 060825: XRT Team Refined Analysis
  22. GRB 060813: Swift/BAT, Konus-Wind, and Suzaku/WAM joint prompt spectral analysis
  23. GRB 060825: TNG optical observations
  24. GRB060801: host galaxy redshift
  25. GRB060729: analysis of XMM-Newton observation
  26. GRB 060813: A long, bright GRB detected with Suzaku WAM
  27. Konus-Wind observation of GRB 060814
  28. GRB 060814: P60 Observations
  29. GRB 060814 - SDSS Pre-Burst Observations
  30. Konus-Wind observation of GRB 060813
  31. Second VLA limit on new radio point source in SGR 1806-20
  32. GRB060807: Possible Highly Significant X-ray Emission Lines
  33. GRB060807: Optical limiting magnitudes
  34. GRB 060805B: XRT Team Analysis
  35. GRB060806 is similar to previous activity of SGR1806-20
  36. GRB 060807: UVOT Upper limits
  37. GRB060807 - SDSS Pre-burst Observations
  38. GRB 060805B: Swift/UVOT Upper Limits
  39. GRB 060805: P60 Observations
  40. GRB 060805 - SDSS Pre-Burst Observations
  41. GRB 060804: Swift UVOT observations
  42. GRB 060728: Upper limits of the X-ray emission
  43. GRB060801: Swift/UVOT Upper Limits
  44. GRB 060801, optical observation
  45. GRB 060729: Swift-XRT refined analysis
  46. GRB 060218 (SN 2006aj): IR afterglow detection six months after the
  47. GRB060719: prompt NIR observations with REM
  48. GRB 060719: correction to the coordinates reported in GCN 5347
  49. GRB 060719: VLT/ISAAC observations
  50. GRB 060719: XRT refined analysis
  51. GRB 060719: further analysis of VLT observations
  52. GRB 060719: prompt PROMPT observations
  53. GRB 060719: VLT observations
  54. GRB 060717: Swift-BAT refined analysis
  55. GRB060717 - SDSS Pre-burst Observations
  56. GRB 060714: REM infrared observations
  57. GRB060714: correction to GCN 5324
  58. GRB 060714 : Liverpool Telescope Observations
  59. GRB 060714: Swift XRT refined analysis
  60. GRB 060714, optical observation
  61. GRB060712: MASTER optical observation
  62. GRB120706: MASTER optical observation
  63. GRB 060708: Swift-XRT refined analysis
  64. GCN 060707: Swift-UVOT observations
  65. GRB 060707: Swift-XRT refined analysis
  66. GRB060707 possible optical confirmation
  67. GRB 060515: Upper Limit on Host Galaxy
  68. GRB 050223: Magellan redshift
  69. GRB060614: Detection of the host galaxy but no supernova emission
  70. GRB 060614: redshift confirmation
  71. GRB 060614: Redshift
  72. Trigger 215279: Swift detection of a possible burst (GRB 060619)
  73. GRB060614: Optical observations
  74. Konus-Wind observation of GRB 060614
  75. GRB 060614, SMARTS optical/IR afterglow observation
  76. GRB060602A: Swift/UVOT upper limits
  77. GCN 060607: Swift-UVOT obswervations.
  78. GRB 060607: Swift-BAT Refined Analysis
  79. GRB 060607: IR observations
  80. GRB 060522: PROMPT Optical Limits
  81. GRB060605: Swift/UVOT detections
  82. GRB 060605: Swift-XRT Team refined analysis
  83. SALT spectroscopy of GRB 060605
  84. GRB 060605: ROTSE-III Optical Counterpart
  85. GRB060604: Swift/UVOT detections
  86. GRB 060604: Swift-XRT Team refined analysis
  87. GRB 060602A: Swift-BAT Refined Analysis: Correction
  88. GRB 060602B: Swift-XRT Refined Analysis
  89. GRB 060526: Tautenburg Second Epoch Observations
  90. GRB 060602B: Swift detection of a burst
  91. GRB060602 - SDSS Pre-Burst Observations
  92. GRB 060502A: Optical afterglow observations
  93. GRB 060526: Break in X-ray light curve
  94. GRB 060526: Multiple Optical Flares
  95. GRB 060526: RTT150 optical observations
  96. GRB 060526: Tautenburg OT observation and light curve fitting
  97. GRB 060526: SMARTS optical/IR afterglow observations
  98. GRB060526: possible break in the optical light curve
  99. GRB 060526: Optical Flare
  100. GRB060526: Further Swift-UVOT Observations

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