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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"

24536 results found.

  1. GRB 140619B: Suzaku WAM observation of the prompt emission
  2. GRB 140626A: Swift detection of a burst
  3. GRB 140624A: Fermi GBM observation of a short burst
  4. GRB 140623A: Swift-XRT and UVOT observations
  5. GRB 140623A / iPTF14cyb: Fermi GBM detection
  6. GRB 140621A: Fermi GBM detection
  7. Konus-Wind observation of GRB 140621A
  8. IPN Triangulation of GRB 140621A
  9. Konus-Wind observation of GRB 140619A
  10. Fermi 425193729 / iPTF14cyb: Discovery of optical afterglow
  11. GRB 140622A: KAIT Optical Upper Limit
  12. GRB 140620A / iPTF14cva: Konkoly optical observations
  13. GRB 140622A: An unusual short event, Swift-BAT refined analysis
  14. GRB 140622A: VLT/X-shooter redshift
  15. GRB 140622A: GROND Upper limits
  16. Konus-Wind observation of GRB 140619C
  17. GRB 140620A: Swift-XRT observations
  18. IPN Triangulation of GRB 140619C (long/very intense)
  19. GRB 140620A / iPTF14cva: Fermi GBM observations
  20. GRB 140619A: Swift-BAT refined analysis
  21. GRB 140619B: Fermi-LAT Detection
  22. GRB 140619B: Fermi GBM detection of a short GRB
  23. GRB 140619A: Swift-XRT refined Analysis
  24. Swift trigger 601928 is V490 Cep: BAT+XRT refined analysis.
  25. GRB 140614B: MITSuME Akeno upper limits
  26. GRB 140614B: MITSuME Okayama upper limits
  27. GRB 140614B: Swift-BAT refined analysis
  28. GRB 140614A: Swift-BAT refined analysis
  29. GRB 140614B: Swift detection of a burst
  30. GRB 140614A: GROND afterglow candidate
  31. GRB 140611A: Swift-XRT observations
  32. Konus-Wind observation of GRB 140611A
  33. GRB 140606B / iPTF 14bfu: MOSFIRE NIR imaging
  34. GRB 140610A: Fermi GBM Detection
  35. IPN Triangulation of GRB 140611A (short/hard)
  36. GRB 140610A: Swift-BAT refined analysis
  37. GRB 140610A: MASTER optical observations
  38. Konus-Wind observation of GRB 140610A
  39. Swift/XRT returns to normal observing
  40. GRB140606B: DCT time of observation correction
  41. GRB 140610A: Swift-XRT observations
  42. GRB 140610A: Swift detection of a burst
  43. Konus-Wind observation of GRB 140606B
  44. GRB 140607A: Swift-BAT refined analysis
  45. GRB 140606B: Swift XRT position
  46. GRB 140606B / Fermi 432717114 / iPTF 14bfu: Keck redshift
  47. GRB 140607A: Swift detection of a burst
  48. GRB 140606B: Fermi GBM detection
  49. Fermi423717114: iPTF optical transient candidates
  50. GRB 140606A: Swift-BAT refined analysis
  51. Swift Trigger 600914 is probably a noise fluctuation
  52. Konus-Wind observation of GRB 140604A
  53. IPN Triangulation of GRB 140604A (short/hard)
  54. Swift XRT is off-line
  55. GRB 140528A: Fermi GBM Detection
  56. Konus-Wind observation of GRB 140529A
  57. Konus-Wind observation of GRB 140528A
  58. GRB 140529A: Swift-XRT afterglow detection.
  59. GRB 140529A found in ground analysis of BAT slew data
  60. Chandra late-time observations of GRB140515A
  61. Swift trigger 600114 is not an outbursting X-ray source
  62. Swift Trigger 600114: Preliminary BAT analysis
  63. Swift Trigger 600114 in M31: Archival and Prompt UVOT Imaging
  64. Swift detection of SFXT IGR J17544-2619
  65. GRB 140523A: NOT observation
  66. Konus-Wind observation of GRB 140523A
  67. Swift trigger 599860 probably not real
  68. GRB 140523A: Fermi-LAT detection
  69. GRB 140523A: Fermi GBM detection
  70. GRB 140521A : Xinglong TNT upper limit
  71. GRB 140521A: Fermi GBM Detection
  72. GRB 140521A: Swift-BAT refined analysis
  73. GRB 140521A: MITSuME Okayama upper limits
  74. GRB 140516A: further Swift-XRT analysis
  75. GRB 140521A: MASTER optical observations
  76. GRB 140521A: Swift detection of a burst
  77. GRB 140512A: MASTER prompt and afterglow optical observations
  78. GRB 140518A, Swift-BAT refined analysis
  79. GRB 140518A: Skynet GORT Detections of the Optical Afterglow
  80. GRB 140518A: P60 i-/z-band detections
  81. GRB 140518A: KAIT optical candidate
  82. GRB 140516A: Subaru NIR imaging observations
  83. GRB 140516A: Gemini-North limit on an optical afterglow
  84. GRB 140516A: Swift-BAT refined analysis
  85. GRB 140516A: NOT optical observations
  86. GRB 140516A: MASTER early optical observations
  87. GRB 140516A: TNG optical observations
  88. GRB 140516A: Swift detection of a short burst
  89. GRB 140515A: Swift-BAT refined analysis
  90. GRB 140515A : TNG near-infrared observations
  91. GRB 140515A: GROND observation of the afterglow
  92. GRB 140515A: KAIT Optical Upper Limit
  93. GRB 140515A: Gemini-North imaging
  94. GRB 140515A: MITSuME Akeno upper limits
  95. Konus-Wind observation of GRB 140512A
  96. GRB 140512A: Fermi GBM detection
  97. GRB 140508A: MITSuME Akeno Optical observation
  98. GRB 140512A: Swift-BAT refined analysis
  99. GRB140512A : GROND observations
  100. GRB 140512A: Swift-XRT refined Analysis

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