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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"

11621 results found.

  1. GRB 130702A (= Fermi 394416326): correction of the GCN #14988 title
  2. GRB 130702Ð
  3. Konus-Wind observation of GRB 130702A
  4. GRB 130702A: further TNG observations
  5. GRB 130702A: further Swift-XRT observations
  6. GRB 130702A: Continued P60 observations
  7. GRB 130702A: CARMA 3mm detection
  8. GRB 130702A: TNG optical observations
  9. GRB 130702A / Fermi394416326 : Nanshan optical observations
  10. IPN localization of GRB 130702A (= Fermi 394416326)
  11. Fermi GRB 130702A: Swift XRT and UVOT observations
  12. GRB 130702A / Fermi394416326: Fermi GBM detection
  13. GRB 130702A / Fermi394416326 : Fermi-LAT detection of a burst
  14. Fermi GBM trigger 394416326: MASTER early optical limit
  15. GRB 130628A: Fermi GBM detection
  16. Fermi394416326: iPTF detection of a possible optical afterglow
  17. Fermi GBM trigger 394325281 / 130630950 is not a GRB
  18. GRB 130701B: Fermi GBM detection
  19. GRB 130627A: Fermi GBM detection
  20. GRB 130623A: Fermi GBM detection
  21. GRB 130623A detected in ground analysis of Swift-BAT data
  22. Fermi/GBM observation of the Soft Gamma Repeater SGR J1550-5418
  23. GRB 130614A: Fermi GBM detection
  24. GRB 130612A: Fermi GBM observation
  25. GRB 130606B: Suzaku WAM observation of the prompt emission
  26. Recent Fermi GBM particle triggers misclassified as GRBs
  27. GRB 130609B: Fermi GBM observation
  28. GRB 130610A: Fermi GBM Observation
  29. GRB 130606B: Swift/UVOT Upper Limit
  30. GRB 130609A: Fermi GBM observation
  31. GRB 130606B: AGILE-MCAL observation
  32. GRB 130606B: Swift-XRT observations
  33. Konus-Wind observation of GRB 130606B
  34. GRB 130606B; Fermi GBM observation
  35. GRB 130606B: Fermi-LAT detection of a bright hard burst
  36. GRB 130604B: Fermi GBM detection
  37. GRB 130528A: Fermi GBM detection
  38. GRB 130518A: Suzaku WAM observation of the prompt emission
  39. GRB 130515A: Suzaku WAM observation of the prompt emission
  40. GRB 130518A: 10.4m GTC/OSIRIS redshift
  41. GRB 130518A: Continued RATIR Optical Observations - Fading
  42. GRB 130518A: Confirmation of the X-ray afterglow.
  43. GRB 130518A: P60 Afterglow Observations
  44. GRB 130518A: RATIR Optical and NIR Observations
  45. GRB 130518A: Swift XRT and UVOT possible afterglow
  46. Konus-Wind observation of GRB 130518A
  47. GRB 130518A Swift-BAT position from ground analysis
  48. GRB 130518A: Fermi LAT detection
  49. GRB 130518A: Fermi GBM detection
  50. Konus-Wind observation of GRB 130515A
  51. Fermi GBM trigger 390275038 / 130515072 is not a GRB
  52. GRB 130515A: Fermi GBM detection
  53. Fermi Trigger 130507.091 - Detection of a SGR-like Burst
  54. GRB 130504C: Swift-XRT afterglow confirmation
  55. GRB 130504C: Suzaku WAM observation of the prompt emission
  56. Refined IPN Triangulation of GRB 130502B
  57. GRB 130504C: further Swift-XRT observations
  58. Konus-Wind observation of GRB 130504C
  59. GRB 130504C: Swift-XRT observations
  60. GRB 130504C: Fermi GBM detection
  61. GRB 130504C: Fermi-LAT detection of a burst
  62. Konus-Wind observation of GRB 130504B
  63. IPN Triangulation of GRB 130504B
  64. GRB 130504B: Fermi GBM detection
  65. GRB 130502B: Suzaku WAM observation of the prompt emission
  66. GRB 130502B: Swift-XRT refined Analysis
  67. GRB 130427A: Non-observation of VHE emission with HAWC
  68. IPN Triangulation of GRB 130502B
  69. GRB 130502A: Fermi GBM detection
  70. Konus-Wind observation of GRB 130502B
  71. GRB 130502B: P60 Observations
  72. GRB 130502B Swift-XRT observations
  73. GRB 130502B: Fermi LAT Detection
  74. GRB 130502B: Fermi GBM detection of a burst
  75. GRB 130425A: Suzaku WAM observation of the prompt emission
  76. GRB 130427A: high energy gamma-ray detection by AGILE
  77. GRB 130427A: Fermi-LAT refined analysis
  78. GRB 130427A in the Ep,i - Eiso plane
  79. GRB 130425: MASTER-Net optical observations
  80. GRB 100728A: GROND host detection and X-shooter redshift
  81. Konus-Wind observation of GRB 130427A
  82. GRB 130427A: SPI-ACS/INTEGRAL observations
  83. GRB 130427A: Fermi GBM observation
  84. GRB 130427A: Fermi-LAT detection of a burst
  85. GRB 130427A: Swift-BAT refined analysis
  86. GRB 130427A: Swift detection of a very bright burst with a likely bright optical counterpart
  87. Konus-Wind observation of GRB 130425A
  88. IPN Triangulation of GRB 130425A
  89. GRB 130425A: Fermi GBM detection
  90. GRB 130420B: Fermi GBM observation
  91. GRB 130420A: Fermi GBM observation
  92. IPN Triangulation of GRB 130320B (very long/bright)
  93. Swift/XRT observation of GRB 130327B
  94. GRB 130310A: RATIR Observations
  95. Konus-Wind observation of GRB 130327B
  96. GRB 130327B: Fermi-LAT detection of a burst
  97. GRB 130327B: Fermi GBM detection
  98. GRB 130327B: gamma-ray detection by AGILE
  99. Konus-Wind observation of GRB 130325A
  100. GRB 130325A Tiled Swift observations

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