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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"

11631 results found.

  1. Fermi GBM trigger 406351590 / 131117143 is not a GRB
  2. Konus-Wind observation of GRB 131108A
  3. GRB 131108A: CARMA 3mm detection
  4. GRB 131108A: Fermi GBM observation
  5. GRB 131108A: Swift/UVOT Detection
  6. GRB 131108A: Swift-XRT observations
  7. GRB 131108A: TAROT-Calern optical observation
  8. GRB 131108A: Fermi-LAT refined analysis
  9. GRB 131108A: NOT optical observations
  10. GRB 131108A: Redshift from 10.4m GTC
  11. GRB 131108A: Swift detection of a possible X-ray afterglow
  12. GRB 131108A Tiled Swift observations
  13. GRB 131108A: Fermi-LAT onboard detection of a burst
  14. GRB 131029A: Suzaku WAM observation of the prompt emission
  15. GRB 131105A: Fermi GBM observation
  16. GRB 131018B: RATIR Optical/NIR Observations
  17. GRB 131031A: Fermi GBM detection
  18. GRB 131018B: Further Swift-XRT observations.
  19. GRB 131031A: MASTER optical observation
  20. GRB 131031A found in ground analysis of BAT data
  21. GRB 131024C: ICSP discovery of a burst in X-rays by balloon borne study
  22. GRB 131029A: Nanshan optical observations
  23. GRB 131029A: Fermi GBM observation
  24. GRB 131029A Tiled Swift observations
  25. GRB 131029A: Fermi-LAT detection of a burst
  26. Konus-Wind observation of GRB 131028A
  27. IPN Triangulation of GRB 131028A (long/bright)
  28. GRB 131028A: Fermi GBM detection
  29. GRB 131024B: Fermi GBM observation
  30. Fermi GBM trigger 13121024.436 is not a GRB
  31. GRB 131014A: RATIR Optical/NIR Afterglow Retraction
  32. IPN Triangulation of GRB 131014A
  33. GRB 131018B: Swift-XRT observations
  34. GRB 131018B: Fermi GBM observation
  35. GRB 131018B: Fermi-LAT detection of a burst
  36. GRB 131014A: Suzaku WAM observation of the prompt emission
  37. GRB 131014A: GROND observations
  38. GRB 131014A: RATIR Optical/NIR Afterglow Confirmation
  39. Fermi GBM data availability during U.S. government shutdown
  40. GRB 131014A: Swift-XRT refined Analysis
  41. GRB 131011A: Swift/UVOT Upper Limits
  42. GRB 131014A: Swift/UVOT Upper Limits
  43. Fermi 403206457 / GRB 131011A: AAO optical observations
  44. GRB 131014A: RATIR Optical and NIR Observations
  45. Konus-Wind observation of GRB 131014A
  46. GRB 131014A: NOT afterglow candidate
  47. GRB 131014A: Nanshan optical observations
  48. GRB 131014A: Swift detection of a possible X-ray afterglow
  49. GRB 131014A Tiled Swift observations
  50. GRB 131014A: Fermi-LAT detection
  51. GRB 131014A: Fermi GBM detection
  52. GRB 131011A: Fermi GBM detection
  53. iPTF 13dsw/Fermi403206457: X-Shooter redshift
  54. Swift-XRT detection of iPTF 13dsw/Fermi403206457
  55. Fermi403206457: continued P60 observations and fading behavior
  56. Fermi403206457: Weihai optical upper limit
  57. Fermi403206457: NOT optical observations
  58. Fermi403206457: iPTF detection of a possible optical afterglow
  59. GRB 131004A: Fermi GBM observation
  60. GRB 131002A: Fermi GBM observation
  61. Fermi Gamma-ray Burst Monitor trigger 402405063 / 131002466 is not a GRB
  62. IPN Observations of GRB 130925A
  63. Fermi LAT Upper Limits on GRB 130925A
  64. GRB 130925A: Fermi GBM Detection
  65. Konus-Wind observation of GRB 130925A
  66. Observation of possible GRB/TDE 130925A by INTEGRAL/SPI-ACS: three activity episodes
  67. GRB 130925A Swift-BAT refined analysis
  68. Fermi GBM detection of GRB 130925A and a possible precursor
  69. IPN Triangulation of SGR-like burst 130913 - probable association with SGR/AXP 1E1841-045
  70. GRB 130702A: RTT150 optical observations
  71. Fermi Trigger 401326696: MASTER prompt optical observations
  72. Fermi/GBM Detection of two SGR-like bursts possibly associated with SGR J1833-0832
  73. Konus-Wind observation of GRB 130912A
  74. GRB 130912A: Fermi GBM detection
  75. GRB 130828A: Further Swift XRT observations
  76. GRB 130907A: INTEGRAL/SPI-ACS light curve
  77. Errata of GRB name in GCN 15196: should have been GRB 130907A instead of GRB 120916A
  78. GRB 120916A: Fermi-LAT detection of a burst
  79. GRB 130903A: Fermi GBM observation
  80. IPN triangulation of GRB 130828A - error box
  81. GRB 130828A: Swift XRT and UVOT observations
  82. IPN triangulation of GRB 130828A
  83. GRB 130828A Tiled Swift observations
  84. GRB 130828A: Fermi GBM detection
  85. GRB 130828A: Fermi-LAT detection of a burst
  86. IPN triangulation of GRB130821A
  87. Konus-Wind observation of GRB 130821A
  88. GRB 130821A: Swift-XRT observation
  89. GRB 130821A: Fermi-LAT detection of a burst
  90. GRB 130821A: Fermi GBM Detection
  91. Fermi Gamma-ray Burst Monitor trigger 398555975 / 130818916 is not a GRB
  92. GRB 130816A: Fermi GBM observation
  93. Konus-Wind observation of GRB 130804A
  94. IPN localization of GRB 130804A
  95. GRB 130804A; Fermi GBM observation
  96. GRB 130803A; Fermi GBM observation
  97. GRB 130727A: Fermi GBM detection
  98. Fermi Gamma-ray Burst Monitor trigger 396484884 / 130725945 is not a GRB
  99. Fermi Gamma-ray Burst Monitor trigger 396533554 / 130726509 is not a GRB
  100. Fermi Gamma-ray Burst Monitor trigger 396447899 / 130725517 is not a GRB

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