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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"

14950 results found.

  1. GRB 130930A: Swift detection of a burst
  2. GRB 130929A: Swift detection of a burst
  3. GRB 130925A: Swift/UVOT Detection of the Host Galaxy
  4. GRB 130925A: sub-mm non-detection with SMA
  5. GRB 130925A: Fermi GBM Detection
  6. Konus-Wind observation of GRB 130925A
  7. GRB 130925A: Historical non-detection from Rosat-HRI
  8. Fermi GBM detection of GRB 130925A and a possible precursor
  9. GRB 130925A: Swift-XRT refined Analysis
  10. GRB 130925A: Initial Similarities to Swift J1644+57
  11. GRB 130925A: MAXI/GSC detection
  12. GRB 130925A: Swift detection of a burst
  13. INTEGRAL detection of a SGR-like burst likely from SGR J1745-29
  14. GRB 130919A: Swift detection of a burst
  15. Fermi/GBM Detection of two SGR-like bursts possibly associated with SGR J1833-0832
  16. Konus-Wind observation of GRB 130912A
  17. GRB 130912A: Fermi GBM detection
  18. GRB 130912A: Swift detection of a short burst
  19. GRB 130907A: AMI radio detection
  20. GRB 130907A: WSRT radio detection
  21. GRB 130828A: Further Swift XRT observations
  22. GRB 130907A: VLA detection
  23. Errata of GRB name in GCN 15196: should have been GRB 130907A instead of GRB 120916A
  24. GRB 120916A: Fermi-LAT detection of a burst
  25. GRB 130907A: Swift/UVOT Detection
  26. GRB 130907A: Early Tautenburg detections, red afterglow
  27. GRB 130907A: Swift detection of a burst with an optical counterpart
  28. Swift follow-up results of the possible weak INTEGRAL GRB
  29. GRB 130831B: Swift detection of a burst
  30. GRB 130831A: Swift detection of a burst with an optical counterpart
  31. GRB 130829A: Swift detection of a burst
  32. GRB 130828A: Fermi GBM detection
  33. GRB 130828A: Fermi-LAT detection of a burst
  34. Konus-Wind observation of GRB 130821A
  35. GRB 130821A: Fermi-LAT detection of a burst
  36. GRB 130821A: Fermi GBM Detection
  37. GRB 130822A: Swift detection of a short burst
  38. GRB 130816B: Swift detection of a burst
  39. GRB 130816A: Swift detection of a burst
  40. GRB 130812A: Swift detection of a burst
  41. GRB 130807A: Swift detection of a GRB or Galactic transient
  42. Konus-Wind observation of GRB 130804A
  43. GRB 130623A: GROND detection of the optical/NIR afterglow
  44. GRB130803A: GROND observations
  45. GRB 130806A: Swift detection of a burst
  46. Trigger 565443: Swift detection of a burst from SGR J1745-29
  47. GRB130803A: GROND detection of possible host
  48. GRB 130803A: Swift detection of a burst
  49. GRB 130727A: Watcher optical limit
  50. GRB 130727A: Swift/UVOT Detection
  51. GRB 130727A: Fermi GBM detection
  52. GRB 130727A: Swift detection of a burst
  53. GRB 130725B: Swift/UVOT Observations
  54. GRB 130725B: GROND Detection of the Optical/NIR Afterglow
  55. GRB 130725B: Swift/UVOT Detection of an Optical Counterpart
  56. GRB 130725B: Swift detection of a burst
  57. GRB 130722A: Swift/UVOT Detection
  58. GRB 130722A: Swift detection of a burst
  59. GRB 130719A: Swift detection of a burst
  60. GRB 130715A: Fermi GBM detection
  61. GRB 130626A: Retraction of possible X-ray afterglow
  62. GMRT radio detection of GRB 130702A
  63. GRB130702A: NOT observation - the detection of an emerging supernova
  64. GRB 130702A: VLA detection
  65. GRB 130702A: WSRT radio detection
  66. Konus-Wind observation of GRB 130702A
  67. GRB 130702A: CARMA 3mm detection
  68. Fermi GRB 130702A: Swift XRT and UVOT observations
  69. GRB 130702A / Fermi394416326: Fermi GBM detection
  70. GRB 130702A / Fermi394416326 : Fermi-LAT detection of a burst
  71. GRB 130628A: Fermi GBM detection
  72. Fermi394416326: FTN detection
  73. Fermi394416326: iPTF detection of a possible optical afterglow
  74. GRB 130701B: Fermi GBM detection
  75. GRB 130701A: P60 Observations
  76. GRB 130701A: Swift/UVOT Detection
  77. GRB 130701A: Swift detection of a burst
  78. GRB 130627B: Possible Swift-XRT afterglow detection
  79. GRB 130627A: Fermi GBM detection
  80. GRB 130623A: Fermi GBM detection
  81. GRB 130626A: Swift-XRT possible detection and UVOT upper limits
  82. GRB 130627B: Swift detection of a burst
  83. GRB 130627A: Swift detection of a burst
  84. GRB 130626A: Swift detection of a short burst
  85. GRB 130625A: Swift detection of a burst
  86. GRB 130623A detected in ground analysis of Swift-BAT data
  87. Swift Trigger 558828 is not an interesting event
  88. Swift Trigger 558631 is not a real source
  89. GRB 130603B: Analogy with GRB 090510A and possible connection with a supernova
  90. Trigger 558399: Swift detection of the Soft Gamma Repeater AXP 1E1547.0-5408
  91. GRB 130615A: Continued Skynet/PROMPT Observations
  92. GRB 130614A: Fermi GBM detection
  93. GRB 130615A: Swift detection of a burst
  94. GRB 130603B: Detection of possible afterglow/kilonova in HST observations
  95. GRB 130606B: Suzaku WAM observation of the prompt emission
  96. GRB 130612A: Swift/UVOT Detection
  97. GRB 130612A: Skynet/PROMPT detection of the optical afterglow
  98. GRB 130612A: Liverpool Telescope Afterglow detection
  99. GRB 130612A: Swift detection of a burst with an optical counterpart
  100. GRB 130610A: Swift/UVOT Observations

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