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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"

24519 results found.

  1. GRB 140129B, Swift-BAT refined analysis (probably not a short burst)
  2. GRB140129A: RAPTOR Observations of the Early Afterglow
  3. GRB 140129A: MITSuME Okayama upper limits
  4. GRB 140129A, Swift-BAT refined analysis
  5. GRB 140129B: MASTER OT confirmation
  6. GRB 140129B: Swift detection of a burst with an optical afterglow
  7. GRB 140129A: ROTSE-III Detection of Optical Counterpart
  8. GRB 140122A/Fermi412093190: MASTER-Net early optical observations
  9. Fermi412093190: iPTF optical counterpart search
  10. Correction: MAXI J1421-613: Skynet PROMPT/R-COP observations
  11. Konus-Wind observation of GRB 131215A
  12. GRB 140118A/MAXI J1421-613: Skynet PROMPT/R-COP observations
  13. GRB 140118A: Fermi GBM observation
  14. GRB 140118A, Swift-BAT refined analysis
  15. Swift Trigger 584155 is MAXI J1421-613
  16. GRB 140118A: Swift detection of a burst
  17. GRB 140103A: MASTER-Net early OT detection
  18. GRB 140108A: Mondy optical observations, refined analysis
  19. GRB 140114A: NOT afterglow observations
  20. GRB 140114A: MITSuME Okayama upper limits
  21. GRB 140114A: ROTSE-III Optical Limits
  22. GRB 140114A: Swift-XRT refined Analysis
  23. GRB 140114A: Swift-BAT refined analysis
  24. GRB 140114A: KAIT Optical Upper Limit
  25. GRB 140108A: Konkoly optical observations
  26. GRB 140110A: Swift/UVOT Observations
  27. GRB 140108A: Suzaku WAM observation of the prompt emission
  28. GRB 140104B: Suzaku WAM observation of the prompt emission
  29. GRB 140110A: Swift XRT observations
  30. GRB 140110A: OT detection in Swift/UVOT imaging
  31. GRB 140110A: Fermi GBM observation
  32. GRB 140110A: Fermi-LAT detection of a burst
  33. GRB 140105A: MASTER-Net early optical observations and time correction
  34. GRB 140108A: Swift-BAT refined analysis
  35. GRB 140108A: Fermi GBM detection
  36. GRB 140108A: MASTER-Net OT detection
  37. New Fermi-LAT GRB Table
  38. GRB 140105A/Fermi410578384: MASTER-Net early optical observations
  39. LOAO R-band Observation of GRB 140102A
  40. GRB 140105A: Fermi GBM detection
  41. GRB 140104B: Fermi GBM observation
  42. GRB 140102A: BOOTES-4 early optical observations
  43. GRB 140104B: Fermi-LAT detection of a burst
  44. GRB 140103A: Lulin Optical r-band Observations
  45. GRB 131231A: CARMA 3mm detection
  46. GRB 131231A, Optical Observations
  47. GRB 140103A: P60 Observations
  48. GRB 131231A: Swift/UVOT Observations of the Optical Afterglow
  49. GRB 131231A: Fermi GBM correction to GCN 15644
  50. Konus-Wind observation of GRB 131231A
  51. GRB 140102A: Fermi/GBM Observation
  52. GRB 131229A: Suzaku WAM observation of the prompt emission
  53. Konus-Wind observation of GRB 140102A
  54. GRB 140103A: Swift-XRT refined analysis
  55. GRB 140102A: GROND observations
  56. GRB 140103A, Swift-BAT refined analysis
  57. GRB 140102A: MAXI/GSC detection
  58. GRB 140102A, Swift-BAT refined analysis
  59. GRB 140102A: Swift-XRT refined Analysis
  60. GRB 140103A: MASTER-Net optical observations
  61. GRB 140102A: Fermi-LAT detection of a burst
  62. GRB 140102A: Early optical observations from Nanshan
  63. GRB 131229A: Fermi GBM detection
  64. GRB 131227A: KAIT light curve analysis
  65. GRB 131231A : xinglong TNT optical observation
  66. GRB 131231A: VLT/X-shooter redshift
  67. GRB 131231A: Fermi GBM detection
  68. GRB 131231A: iPTF optical afterglow candidate coincident with Nanshan detection
  69. GRB 131231A: Nanshan afterglow candidate
  70. GRB 131231A: Fermi-LAT detection of a burst
  71. Konus-Wind observation of GRB 131229A
  72. GRB 131229A: GROND observations
  73. GRB 131229A: Swift-BAT refined analysis
  74. GRB 131229A: Deep Gemini-South Imaging
  75. GRB 131229A: KAIT Optical Upper Limit
  76. GRB 131224A: 5.8 GHz VLA observations
  77. GRB 131227A: P60 Limits
  78. GRB 131227A: Xinglong optical observations
  79. GRB 131227A: Swift-BAT refined analysis
  80. Konus-Wind observation of GRB 131226A
  81. GRB 131227A: OT candidate from KAIT Optical observations
  82. GRB 131225A: MASTER-Net optical observations
  83. GRB 131226A, Swift-BAT refined analysis
  84. GRB 131216A: Suzaku WAM observation of the prompt emission
  85. GRB 131224A: Swift-XRT observation
  86. GRB 131224A: MASTER-Net early optical observations
  87. GRB 131224A: A short GRB detected by INTEGRAL
  88. GRB 131218A: GROND Upper Limits
  89. GRB 131218A: a long GRB detected with INTEGRAL
  90. GRB 131216A: Fermi GBM observation
  91. GRB 131216A: Fermi-LAT detection of a burst
  92. GRB 131209A: Fermi GBM observation
  93. Konus-Wind observation of GRB 131209A
  94. IPN Triangulation of GRB 131209A
  95. GRB 131209A: Fermi-LAT detection of a burst
  96. GRB131202A : GROND observations
  97. GRB131205A : GROND Observations
  98. GRB 131205A: Swift-BAT refined analysis
  99. GRB 131205A: Zadko observatory - Gingin optical observations
  100. GRB 131205A: Swift detection of a burst

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