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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"

24511 results found.

  1. GRB 130609B, Further Swift-BAT refined analysis
  2. GRB 130609B: GROND observations
  3. GRB 130609B, Swift-BAT refined analysis
  4. GRB 130610A: Fermi GBM Observation
  5. Konus-Wind observation of GRB 130609B
  6. GRB 130609B: Swift-XRT refined Analysis
  7. GRB 130608A: Further Swift-BAT analysis
  8. GRB 130610A, Swift-BAT refined analysis
  9. GRB 130610A: PAIRITEL NIR Afterglow Observations
  10. GRB 130610A: Skynet/PROMPT detection of the optical afterglow
  11. GRB 130610A - Liverpool Telescope Optical Afterglow Confirmation
  12. GRB 130606A - Liverpool Telescope and Faulkes Telescope North optical observations
  13. GRB 130609A: Fermi GBM observation
  14. GRB 130609A, Swift-BAT refined analysis
  15. GRB 130608A: Swift-BAT refined analysis
  16. GRB 130609A: P60 nondetection
  17. GRB130608A: BOOTES-2/TELMA upper limits
  18. GRB 130609A: Swift detection of a burst
  19. GRB 130608A: Swift detection of a burst
  20. GRB 130606A: Continued Skynet/PROMPT observations
  21. GRB 130606B: AGILE-MCAL observation
  22. GRB 130606A, Swift-BAT refined analysis
  23. GRB 130606A: Skynet/PROMPT detection of the optical afterglow
  24. GRB 130606A: Swift-XRT refined Analysis
  25. Konus-Wind observation of GRB 130606A
  26. GRB 130606A: GROND Detection of the Optical/NIR Afterglow
  27. Konus-Wind observation of GRB 130606B
  28. GRB 130606A: PAIRITEL NIR Afterglow Observations
  29. GRB 130606B; Fermi GBM observation
  30. GRB 130606B: Fermi-LAT detection of a bright hard burst
  31. GRB 130605A: Swift-BAT refined analysis
  32. GRB 130606A - Liverpool Telescope Optical Afterglow Confirmation
  33. GRB 130604A: Swift-BAT refined analysis
  34. GRB 130605A: Continued Skynet/PROMPT observations
  35. GRB 130605A: Skynet/PROMPT detection of a fading afterglow
  36. GRB 130605A: GROND afterglow candidate
  37. GRB 130603B: MASTER-Net early observations and optical sloap limit
  38. GRB 130603B: AMI-LA 15GHz observations
  39. Swift Trigger 557466 is probably not real.
  40. GRB 130604B: Fermi GBM detection
  41. GRB 130603B: P60 Observations
  42. GRB 130604A: MITSuME Okayama upper limits
  43. GRB 130603A: MITSuME Akeno Optical observation
  44. GRB 130604A: KAIT optical upper limit
  45. GRB 130604A: Swift detection of a burst
  46. GRB 130603B: Swift-BAT refined analysis
  47. GRB 130603A: Swift-BAT refined analysis
  48. GRB 130603B: Swift detection of a bright short burst
  49. GRB 130603A: MITSuME Okayama Optical Observation
  50. GRB 130603A: Swift detection of a burst
  51. GRB 130529A: GROND upper limits
  52. GRB 130528A: Fermi GBM detection
  53. GRB 130527A: Suzaku WAM observation of the prompt emission
  54. GRB 130529A: Swift-BAT refined analysis
  55. GRB 130518A: Suzaku WAM observation of the prompt emission
  56. Konus-Wind observation of GRB 130528A
  57. Konus-Wind observation of GRB 130527A
  58. GRB 130528A: Swift-BAT refined analysis
  59. GRB 130529A: Swift detection of a burst
  60. GRB 130528A: Swift-XRT refined Analysis
  61. GRB 130521A: Skynet/PROMPT detection of an extremely red afterglow
  62. GRB 130527A: NOT optical counterpart
  63. GRB 130527A: Swift-BAT refined analysis
  64. GRB 130527A: Swift-XRT refined Analysis
  65. GRB 130514A: Konus-Wind and Swift/BAT joint spectral analysis
  66. GRB 130521B: Suzaku WAM observation of the prompt emission
  67. Konus-Wind observation of GRB 130521B
  68. GRB 130521A: Skynet/PROMPT observations
  69. IPN Triangulation of GRB 130521B
  70. GRB 130518B, Swift-BAT refined analysis
  71. GRB 130521A, Swift-BAT refined analysis
  72. GRB 130521A: Swift detection of a burst
  73. GRB 130515A: Suzaku WAM observation of the prompt emission
  74. GRB 130518A: P60 Afterglow Observations
  75. GRB 130518A: RATIR Optical and NIR Observations
  76. GRB 130518A: Swift XRT and UVOT possible afterglow
  77. Konus-Wind observation of GRB 130518A
  78. GRB 130518A: Fermi LAT detection
  79. GRB 130518A: Fermi GBM detection
  80. GRB 130427A: Konkoly optical observations
  81. GRB 130515A: IRSF NIR Observation
  82. GRB 130515A: Further Gemini Observations
  83. Konus-Wind observation of GRB 130515A
  84. GRB 130515A: Fermi GBM detection
  85. GRB 130427A: Skynet detections of a possible supernova
  86. GRB 130514B Swift-BAT observations
  87. GRB 130515A: Swift-BAT refined analysis
  88. GRB 130514B: GROND observations
  89. GRB 130515A: GROND Observations
  90. GRB 130515A: VLT acquisition observation
  91. GRB 130511A: SSO 2.3m observation
  92. GRB 130515A: Swift detection of a short burst
  93. GRB 130514A: Swift-XRT refined Analysis
  94. GRB 130514A: Skynet/PROMPT/DSO Detections
  95. GRB130514B: MASTER-Net optical observations.
  96. GRB 130513A: GROND observations
  97. GRB 130514B: a long GRB detected by INTEGRAL
  98. GRB 130514A: Swift-BAT refined analysis
  99. GRB 130514A: P60 Observations
  100. GRB 130514A: Swift detection of a burst

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