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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"

37188 results found.

  1. GRB 060719: further analysis of VLT observations
  2. GRB 060719: optical limit by Pi-of-the-Sky
  3. GRB060719: FRAM early follow-up limit
  4. GRB 060719: prompt PROMPT observations
  5. GRB060719: REM NIR Observations
  6. GRB 060719: Continued LCO optical observations
  7. GRB 060719: VLT observations
  8. GRB 060719: LCO optical observations
  9. GRB 060719: Swift detection of a burst
  10. GRB 060717: Swift XRT refined analysis
  11. GRB 060714: OA fading and a possible host detection
  12. GRB060714: optical observations
  13. GRB 060717: NOT observations
  14. GRB 060714: Refined analysis of the Swift-BAT burst
  15. GRB 060717 optical upper limit
  16. GRB060717: Swift/UVOT upper limits
  17. GRB 060717: Swift XRT refined position
  18. GRB 060717: Swift-BAT refined analysis
  19. GRB060717 - SDSS Pre-burst Observations
  20. GRB 060714: REM infrared observations
  21. GRB 060717, optical observation
  22. GRB 060717: Swift detection of a burst
  23. GRB060714: correction to GCN 5324
  24. GRB060714: optical observations
  25. GRB 060714, SMARTS optical/IR afterglow observation
  26. GRB 060714 : Liverpool Telescope Observations
  27. GRB 060714: Swift XRT refined analysis
  28. GRB 060714: OA redshift
  29. GRB 060708: VLT spectroscopy
  30. GRB060708: MARGE low resolution spectrum observations
  31. GRB060714: optical observations
  32. Swift-BAT trigger 219136 is not a GRB
  33. Correction to Circular 5314: Circular refers to GRB 060714
  34. GRB060707 possible optical confirmation
  35. Swift trigger 219136 is probably not a GRB
  36. GRB 060714, optical observation
  37. GRB 060714: Swift detection of a burst with an UVOT optical afterglow
  38. GRB 060605: SkyNet Optical Limits
  39. GRB060712: P60 Observations
  40. GRB 060712: XRT refined analysis
  41. GRB 060712: Swift/UVOT Upper Limits
  42. GRB060526: optical observations
  43. GRB 060712: XRT refined position
  44. GRB 060712: Refined analysis of the Swift-BAT burst
  45. GRB060712: MASTER optical observation
  46. GRB120706: MASTER optical observation
  47. GRB 060712: Swift detection of a burst
  48. Host galaxy of GRB050904: 250 GHz upper limit with MAMBO at the IRAM 30m
  49. GRB 060708: PROMPT Optical Limits
  50. GRB 060707: OA fading and redshift
  51. GRB 060708: Swift-XRT refined analysis
  52. GCN 060708: Swift-UVOT Observations
  53. GRB 060708: Refined analysis of the Swift-BAT burst
  54. GCN 060707: Swift-UVOT observations
  55. GRB 060707: Swift-XRT refined analysis
  56. GRB 060708: Swift detection of a burst with an UVOT countpart
  57. GRB060707 possible optical confirmation
  58. GRB 060707: BOOTES-IR optical afterglow candidate
  59. GRB 060707: Refined analysis of the Swift-BAT burst
  60. GRB 060707: BOOTES-IR optical observation
  61. GRB 060707: Swift detection of a burst
  62. GRB 060515: Upper Limit on Host Galaxy
  63. GRB 050223: Magellan redshift
  64. GRB 060614: SMARTS host galaxy observations
  65. GRB 060614: Detection of a Possible, Late-Time Rebrightening
  66. Correction to GCN 5278 & GCN 5279 (GRBs 060105 & 060109)
  67. GRB 060109: Upper Limit on Host Galaxy
  68. GRB 060105: Upper limit on Host Galaxy
  69. GRB060614: Detection of the host galaxy but no supernova emission
  70. GRB 060614: redshift confirmation
  71. GRB 060614: Redshift
  72. Swift-BAT trigger 215279 is not a GRB
  73. Trigger 215279: Swift detection of a possible burst (GRB 060619)
  74. GRB060614: Optical observations
  75. GRB 060614: spectroscopy
  76. GRB050326: Host Galaxy Candidates
  77. GRB050124: Possible Host Galaxy
  78. GRB050223: Host Galaxy
  79. GRB060512: near IR observations
  80. GRB060526: optical observations
  81. GRB 060614: pseudo-z from spectral parameters of the prompt emission
  82. Konus-Wind observation of GRB 060614
  83. GRB060605: optical observation
  84. The Unusually Long-Lived Afterglow of GRB 060614
  85. GRB 060614: optical observations
  86. GRB 060605, optical observations
  87. GRB 060614, SMARTS optical/IR afterglow observation
  88. GRB060614: SSO 1m observations
  89. GRB060614: Watcher observation
  90. GRB 060614: Swift-BAT refined analysis
  91. GRB 060614: Swift/UVOT Observations
  92. GRB060614: Swift-XRT refined analysis
  93. GRB 060604, optical observations
  94. GRB 060614: Swift detection of a burst with a bright optical and X-ray counterpart
  95. GRB 060602A: Swift/XRT analysis
  96. BAT Trigger #214277 is SGR 1900+14
  97. GRB 060610: KAIT observations
  98. GRB 060607: RTT150 optical observations
  99. GRB 070706B: Watcher upper limit
  100. GRB 060607B: Swift-BAT Refined Analysis

Advanced

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