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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"

12376 results found.

  1. Konus-Wind observation of GRB 130606B
  2. GRB 130606B; Fermi GBM observation
  3. GRB 130606B: Fermi-LAT detection of a bright hard burst
  4. GRB 130604B: Fermi GBM detection
  5. GRB 130528A: Fermi GBM detection
  6. GRB 130518A: Suzaku WAM observation of the prompt emission
  7. GRB 130515A: Suzaku WAM observation of the prompt emission
  8. GRB 130518A: 10.4m GTC/OSIRIS redshift
  9. GRB 130518A: Confirmation of the X-ray afterglow.
  10. GRB 130518A: P60 Afterglow Observations
  11. GRB 130518A: Swift XRT and UVOT possible afterglow
  12. Konus-Wind observation of GRB 130518A
  13. GRB 130518A Swift-BAT position from ground analysis
  14. GRB 130518A: Fermi LAT detection
  15. GRB 130518A: Fermi GBM detection
  16. Konus-Wind observation of GRB 130515A
  17. Fermi GBM trigger 390275038 / 130515072 is not a GRB
  18. GRB 130515A: Fermi GBM detection
  19. Fermi Trigger 130507.091 - Detection of a SGR-like Burst
  20. GRB 130504C: Swift-XRT afterglow confirmation
  21. GRB 130504C: Suzaku WAM observation of the prompt emission
  22. Refined IPN Triangulation of GRB 130502B
  23. GRB 130504C: further Swift-XRT observations
  24. Konus-Wind observation of GRB 130504C
  25. GRB 130504C: Swift-XRT observations
  26. GRB 130504C: Fermi GBM detection
  27. GRB 130504C: Fermi-LAT detection of a burst
  28. Konus-Wind observation of GRB 130504B
  29. IPN Triangulation of GRB 130504B
  30. GRB 130504B: Fermi GBM detection
  31. GRB 130502B: Suzaku WAM observation of the prompt emission
  32. GRB 130502B: Swift-XRT refined Analysis
  33. GRB 130427A: Non-observation of VHE emission with HAWC
  34. IPN Triangulation of GRB 130502B
  35. GRB 130502A: Fermi GBM detection
  36. Konus-Wind observation of GRB 130502B
  37. GRB 130502B: P60 Observations
  38. GRB 130502B Swift-XRT observations
  39. GRB 130502B: Fermi LAT Detection
  40. GRB 130502B: Fermi GBM detection of a burst
  41. GRB 130425A: Suzaku WAM observation of the prompt emission
  42. GRB 130427A: High-energy neutrino search
  43. GRB 130427A: high energy gamma-ray detection by AGILE
  44. GRB 130427A: Fermi-LAT refined analysis
  45. GRB 130427A in the Ep,i - Eiso plane
  46. GRB 130425: MASTER-Net optical observations
  47. Konus-Wind observation of GRB 130427A
  48. GRB 130427A: SPI-ACS/INTEGRAL observations
  49. GRB 130427A: Fermi GBM observation
  50. GRB 130427A: Fermi-LAT detection of a burst
  51. GRB 130427A: Swift-BAT refined analysis
  52. GRB 130427A: Swift detection of a very bright burst with a likely bright optical counterpart
  53. Konus-Wind observation of GRB 130425A
  54. IPN Triangulation of GRB 130425A
  55. GRB 130425A: Fermi GBM detection
  56. GRB 130420B: Fermi GBM observation
  57. GRB 130420A: Fermi GBM observation
  58. IPN Triangulation of GRB 130320B (very long/bright)
  59. Swift/XRT observation of GRB 130327B
  60. GRB 130310A: RATIR Observations
  61. Konus-Wind observation of GRB 130327B
  62. GRB 130327B: Fermi-LAT detection of a burst
  63. GRB 130327B: Fermi GBM detection
  64. GRB 130327B: gamma-ray detection by AGILE
  65. Konus-Wind observation of GRB 130325A
  66. GRB 130325A Tiled Swift observations
  67. GRB 130325A: Fermi LAT detection
  68. GRB 130325A: Fermi GBM detection
  69. GRB 130305A: optical upper limit in Mondy observatory
  70. Swift XRT observations of GRB 130310A
  71. GRB 130310A : Suzaku WAM observation of the prompt emission
  72. GRB 130305A: TLS Tautenburg observations
  73. IPN Triangulation of GRB 130307A
  74. Swift XRT observations of GRB 130310A
  75. GRB 130306A: Swift Detection of a Possible Afterglow
  76. Konus-Wind observation of GRB 130310A
  77. IPN triangulation of GRB 130310A
  78. GRB 130310A: Fermi GBM detection
  79. GRB 130310A: Fermi-LAT detection and localization
  80. IPN triangulation of GRB 130228A
  81. Konus-Wind observation of GRB 130306A
  82. GRB 130307A: Fermi GBM detection
  83. GRB 130306A: Fermi GBM observation
  84. GRB 130306A: MASTER-Net pre-Swift alert observation
  85. GRB 130306A: Swift detection of a burst
  86. GRB 130305A: P60 Observations
  87. GRB 130305A: Swift/XRT detection of the afterglow
  88. Konus-Wind observation of GRB 130305A
  89. GRB 130305A: Fermi GBM observation
  90. GRB 130305A: Fermi LAT Detection
  91. Fermi GBM trigger 130301.638 is not GRB
  92. GBM trigger 383712005 (GRB 130228A?) : Possible high-energy photon emission in Fermi/LAT data
  93. GRB 130305A found in ground analysis of Swift/BAT data
  94. Konus-Wind observation of GRB 130219A
  95. IPN Triangulation of GRB 130219A
  96. GRB 130219A: Fermi GBM detection
  97. GRB 130216B: MASTER-Net early observation
  98. GRB 130216A: MASTER-Net early observations
  99. GRB 130216A: Fermi GBM observation
  100. GRB 130216B: Fermi GBM observation

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