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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"

32725 results found.

  1. GRB 060729: Refined analysis of the Swift-BAT burst
  2. GRB 060729: Swift-XRT refined analysis
  3. GRB 060729: Swift/UVOT Observations
  4. GRB 060729: ROTSE-III Detection of Optical Counterpart
  5. GRB 060728: Swift/UVOT Upper Limits
  6. GRB 060728: Refined analysis of the Swift-BAT burst
  7. GRB 060728, SMARTS optical/IR observations
  8. Swift/XRT preliminary analysis
  9. GRB060614 ATCA Radio Limits
  10. GRB 060218 (SN 2006aj): IR afterglow detection six months after the
  11. GRB 060714: Swift/UVOT Observations
  12. GRB060719: prompt NIR observations with REM
  13. GRB 060714: NOT observations
  14. GRB 060719: near-infrared afterglow
  15. GRB 060719: correction to the coordinates reported in GCN 5347
  16. GRB 060522: VLA observation
  17. GRB 060719: Swift/UVOT Upper Limits
  18. GRB 060719: VLT/ISAAC observations
  19. GRB 060719: Refined analysis of the Swift-BAT burst
  20. GRB 060719: XRT refined analysis
  21. GRB 060719: further analysis of VLT observations
  22. GRB 060719: prompt PROMPT observations
  23. GRB060719: REM NIR Observations
  24. GRB 060719: Continued LCO optical observations
  25. GRB 060719: VLT observations
  26. GRB 060717: Swift XRT refined analysis
  27. GRB 060714: OA fading and a possible host detection
  28. GRB 060717: NOT observations
  29. GRB 060714: Refined analysis of the Swift-BAT burst
  30. GRB 060717 optical upper limit
  31. GRB060717: Swift/UVOT upper limits
  32. GRB 060717: Swift XRT refined position
  33. GRB 060717: Swift-BAT refined analysis
  34. GRB060717 - SDSS Pre-burst Observations
  35. GRB 060714: REM infrared observations
  36. GRB 060717, optical observation
  37. GRB060714: correction to GCN 5324
  38. GRB 060714, SMARTS optical/IR afterglow observation
  39. GRB 060714 : Liverpool Telescope Observations
  40. GRB 060714: Swift XRT refined analysis
  41. GRB 060714: OA redshift
  42. GRB 060708: VLT spectroscopy
  43. GRB060708: MARGE low resolution spectrum observations
  44. Swift-BAT trigger 219136 is not a GRB
  45. Correction to Circular 5314: Circular refers to GRB 060714
  46. GRB060707 possible optical confirmation
  47. GRB 060714, optical observation
  48. GRB 060605: SkyNet Optical Limits
  49. GRB060712: P60 Observations
  50. GRB 060712: Swift/UVOT Upper Limits
  51. GRB 060712: Refined analysis of the Swift-BAT burst
  52. Host galaxy of GRB050904: 250 GHz upper limit with MAMBO at the IRAM 30m
  53. GRB 060708: PROMPT Optical Limits
  54. GRB 060707: OA fading and redshift
  55. GRB 060708: Swift-XRT refined analysis
  56. GCN 060708: Swift-UVOT Observations
  57. GRB 060708: Refined analysis of the Swift-BAT burst
  58. GCN 060707: Swift-UVOT observations
  59. GRB 060707: Swift-XRT refined analysis
  60. GRB060707 possible optical confirmation
  61. GRB 060707: Refined analysis of the Swift-BAT burst
  62. GRB060614: Possible SN Bump in UVOT U Band Light Curve
  63. GRB 060515: Upper Limit on Host Galaxy
  64. GRB 050223: Magellan redshift
  65. GRB 060614: SMARTS host galaxy observations
  66. GRB 060614: Detection of a Possible, Late-Time Rebrightening
  67. Correction to GCN 5278 & GCN 5279 (GRBs 060105 & 060109)
  68. GRB 060109: Upper Limit on Host Galaxy
  69. GRB 060105: Upper limit on Host Galaxy
  70. GRB060614: Detection of the host galaxy but no supernova emission
  71. GRB 060614: redshift confirmation
  72. GRB 060614: Redshift
  73. Swift-BAT trigger 215279 is not a GRB
  74. Trigger 215279: Swift detection of a possible burst (GRB 060619)
  75. GRB060614: Optical observations
  76. GRB 060614: spectroscopy
  77. GRB050326: Host Galaxy Candidates
  78. GRB050124: Possible Host Galaxy
  79. GRB050223: Host Galaxy
  80. GRB060512: near IR observations
  81. Konus-Wind observation of GRB 060614
  82. GRB060605: optical observation
  83. The Unusually Long-Lived Afterglow of GRB 060614
  84. GRB 060614: optical observations
  85. GRB 060605, optical observations
  86. GRB 060614, SMARTS optical/IR afterglow observation
  87. GRB060614: SSO 1m observations
  88. GRB060614: Watcher observation
  89. GRB 060614: Swift-BAT refined analysis
  90. GRB 060614: Swift/UVOT Observations
  91. GRB060614: Swift-XRT refined analysis
  92. GRB 060604, optical observations
  93. GRB 060602A: Swift/XRT analysis
  94. BAT Trigger #214277 is SGR 1900+14
  95. GRB 070706B: Watcher upper limit
  96. GRB 060607B: Swift-BAT Refined Analysis
  97. GRB060602A: Swift/UVOT upper limits
  98. GCN 060607: Swift-UVOT obswervations.
  99. GRB 060607: Swift-BAT Refined Analysis
  100. GRB 060607: Swift-XRT Team refined analysis

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