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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"

14946 results found.

  1. GRB 140821A: Fermi GBM Detection
  2. Fermi TRIGGER_NUM 430583595: MASTER OT JR011101.13+603337.5 detection
  3. GRB 140824A: Swift detection of a burst
  4. GRB 140808A/iPTF14eag: AMI 15 GHz detection
  5. GRB140819A: Deep GROND Upper Limits
  6. Konus-Wind observation of GRB 140818A
  7. GRB 140818B: Fermi GBM detection
  8. GRB 140817A: Swift/UVOT Afterglow Detection
  9. GRB 140818B: Swift detection of a burst
  10. GRB 140818A - Fermi GBM Detection
  11. Swift detection of SAX J1712.6-3739
  12. GRB 140818A: Swift-XRT and UVOT potential afterglow detection
  13. GRB 140818A: Correction to GCN 16702
  14. Konus-Wind observation of GRB 140817A
  15. GRB 140818A: MAXI/GSC detection
  16. GRB 140817A: Fermi GBM Detection
  17. GRB 140817A: Swift detection of a burst
  18. Swift Trigger 609694 is probably not an astrophysical source
  19. GRB 140814A: MAXI/GSC detection
  20. GRB 140808A: Confirmation of the Swift-XRT afterglow
  21. Konus-Wind observation of GRB 140810A
  22. GRB140810A: Fermi-LAT detection
  23. GRB 140809A (FERMI trigger 429246673): MASTER follow-up inspection
  24. Konus-Wind observation of GRB 140808A
  25. GRB 140808A: Swift-XRT observations
  26. GRB 140808A: Fermi GBM detection
  27. GRB 140808A: optical afterglow candidate iPTF14eag
  28. GRB 140801A: GROND Afterglow detection, unbroken decay
  29. Konus-Wind observation of GRB 140801A
  30. GRB 140801A (FERMI trigger 428612396): MASTER brigth OT discovery
  31. Konus-Wind observation of GRB 140729A
  32. GRB 140730A: Swift detection of a burst
  33. Swift Trigger 607506 is probably noise
  34. GRB 140729A: Fermi-GBM detection
  35. GRB 140729A: Fermi-LAT detection
  36. Trigger 607399: Swift detection of SGR1806-20
  37. Konus-Wind observation of GRB 140723A
  38. GRB 140723A: Fermi GBM detection
  39. GRB 140723A: Fermi-LAT detection
  40. Konus-Wind observation of GRB 140721A
  41. GRB 140721A: Fermi GBM detection
  42. GRB 140716A: Confirmation of the Swift-XRT afterglow
  43. GRB 140719B: Swift detection of a burst
  44. GRB 140719A: Swift detection of a burst
  45. GRB 140713A: AMI 15 GHz detection
  46. GRB 140713A: 10.4-m GTC deep optical observation
  47. GRB 140716A: Swift-XRT detection of an afterglow candidate
  48. GRB 140716A: A Fermi GBM Detection
  49. Swift observations of a flare from UX Ari
  50. GRB 140709A: Possible AMI 15 GHz detection
  51. Swift detection of UX Ari
  52. GRB 140713A: CARMA mm detection
  53. GRB 140714A: Fermi GBM detection
  54. GRB 140713A: Fermi GBM detection
  55. GRB 140713A: Swift detection of a burst
  56. GRB 140710B: Fermi GBM detection
  57. GRB 140710A: GROND Detection of NIR Afterglow Candidate
  58. GRB 140710A: Swift detection of a burst
  59. GRB 140709B: Fermi GBM detection
  60. GRB 140709B: OSN optical limit
  61. GRB 140709A: Fermi GBM detection
  62. GRB 140709A: BOOTES-2 and OSN optical observations
  63. GRB 140709B: Swift detection of a burst
  64. GRB 140709A: Swift detection of a burst
  65. GRB 140703A: AMI 15 GHz detection
  66. GRB 140706A: Swift/UVOT Detection
  67. GRB 140706A: Fermi GBM detection
  68. GRB140706A: GROND detection of the Optical/NIR afterglow
  69. GRB 140706A: Swift detection of a burst with an optical counterpart
  70. GRB 140705A: Swift detection of a short burst
  71. GRB 140621A: Suzaku WAM observation of the prompt emission
  72. GRB 140703A: VLA K-band detection
  73. GRB 140703A: CARMA 3mm detection
  74. GRB 140703A: Fermi GBM detection
  75. GRB 140703A: BOOTES-2 and OSN optical observations
  76. GRB 140703A: Swift detection of a burst
  77. GRB 140619C: Suzaku WAM observation of the prompt emission
  78. Fermi 425667201: optical counterpart search
  79. GRB 140629A: Swift/UVOT Detection
  80. GRB 140629A: BTA redshift
  81. GRB 140629A: MASTER OT detection
  82. GRB 140629A: Swift detection of a burst with an optical counterpart
  83. GRB 140628A: Swift/UVOT Detection
  84. GRB 140628A: Swift/UVOT Detection
  85. GRB 140628A: Swift-XRT afterglow detection and enhanced position
  86. GRB 140628A: Swift detection of a burst
  87. Swift Trigger 602668: XRT and UVOT confirm is not astrophysical source
  88. GRB 140623A: further Swift-XRT observations
  89. GRB 140619B: Suzaku WAM observation of the prompt emission
  90. GRB 140626A: Swift detection of a burst
  91. GRB140606B/iPTF14bfu: Keck detection of an associated supernova
  92. GRB 140623A / iPTF14cyb: Fermi GBM detection
  93. GRB 140621A: Swift-XRT observations
  94. GRB 140621A: Fermi GBM detection
  95. IPN Triangulation of GRB 140621A
  96. GRB 140622A: GROND Upper limits
  97. GRB 140622A: Swift detection of a short burst
  98. GRB 140620A: Swift/UVOT Detection
  99. Fermi 424934131 / iPTF14cva: Discovery and Redshift of Optical Afterglow
  100. GRB 140619B: Fermi-LAT Detection

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