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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"

26511 results found.

  1. GRB 120803B: Enhanced Swift-XRT position
  2. GRB 120803A: Swift-XRT Observations
  3. GRB 120803A: Swift-BAT refined analysis
  4. GRB 120803B: FTN possible afterglow candidate
  5. GRB 120803B: Swift detection of a burst
  6. GRB 120803A: Swift detection of a possible burst
  7. GRB 120802A: GRT Optical Observation
  8. GRB 120802A: Swift-XRT refined Analysis
  9. GRB 120729A: Fermi GBM observation
  10. GRB 120802A: Swift-BAT refined analysis
  11. GRB 120802A: Enhanced Swift-XRT position
  12. GRB 120802A: Swift detection of a burst
  13. GRB 120728B: Fermi GBM detection
  14. Konus-Wind observation of GRB 120728B
  15. GRB 120729A: break in the optical light curve
  16. IPN Triangulation of GRB 120728B (long/intense)
  17. Virtual Telescope observations of GRB 120729A
  18. GRB 120729A: UKIRT Observation
  19. T100 observations of GRB 120729A
  20. GRB 120728A: GROND Afterglow discovery
  21. GRB 120729A: Swift-XRT refined Analysis
  22. GRB 120729A: Swift/UVOT Detection
  23. Swift Trigger 529076 is from Swift J1910.2-0546 and is not a GRB
  24. GRB 120729A, Swift-BAT refined analysis
  25. GRB 120728A, Swift-BAT refined analysis
  26. GRB 120729A: Enhanced Swift-XRT position
  27. GRB 120729A: Swift detection of a burst with an optical afterglow
  28. GRB 120728A: Swift-XRT refined Analysis
  29. GRB 120728A: Enhanced Swift-XRT position
  30. GRB 120728A: Swift detection of a burst
  31. GRB 120727A/Galactic source: Fermi-LAT detection of a transient source
  32. GRB 120724A, Swift-BAT refined analysis
  33. GRB 120724A: Swift/UVOT Detection of the Optical Afterglow
  34. GRB 120724A: Enhanced Swift-XRT position
  35. GRB 120724A: Swift-XRT refined Analysis
  36. GRB120711A: Planned XMM-Newton observation
  37. GRB 120724A: Swift detection of a burst
  38. GRB 120709A: Swift re-observation of the field of the X-ray counterpart candidate.
  39. GRB 120722A: VLT/X-shooter redshift of the host galaxy
  40. GRB 120722A: Swift-XRT refined Analysis
  41. GRB 120722A: Swift-BAT refined analysis
  42. GRB 120722A: Enhanced Swift-XRT position
  43. GRB 120722A: Correction for GCN circ.13500
  44. GRB 120722A: Swift detection of a burst
  45. GRB 120716A: Fermi GBM observation
  46. GRB 120716A: Swift-XRT detection
  47. GRB 120716A: Redshift confirmation from VLT/X-shooter
  48. GRB 120716A: GROND confirmation of the optical/NIR afterglow
  49. Konus-Wind observation of GRB 120716A
  50. IPN Triangulation of unusual GRB 120716A
  51. GRB 120711A: ATCA 34GHz final observations (upper limit)
  52. GRB 120714B: Swift/UVOT Detection
  53. GRB 120714B: Swift-BAT refined analysis
  54. Swift-BAT refined analysis of 1E 1841-045 (Trigger=526660)
  55. GRB 120714B: GROND confirmation of fading afterglow
  56. GRB 120714A: Swift-XRT refined Analysis
  57. GRB 120714A: Swift-BAT refined analysis
  58. GRB 120714B: Swift detection of a burst
  59. GRB 120714A: Enhanced Swift-XRT position
  60. GRB 120712A: Fermi GBM observation
  61. GRB 120711A: INTEGRAL/SPI observations
  62. GRB 120714A: Swift detection of a burst
  63. GRB 120711A: ATCA 34GHz further observations (upper limit)
  64. IPN Triangulation of GRB 120709A
  65. GRB 120712A: Swift/UVOT Detection
  66. GRB 120712A: Swift-XRT refined Analysis
  67. GRB 120712A: GROND Detection of the Optical/NIR Afterglow Candidate and photo-z
  68. GRB 120712A: Enhanced Swift-XRT position
  69. GRB 120712A: Swift-BAT refined analysis
  70. GRB 120712A: Swift detection of a burst with optical afterglow
  71. GRB 120711A: Fermi LAT Detection
  72. GRB 120711A: ATCA 34GHz upper limit
  73. GRB 120711B: Swift-BAT refined analysis
  74. Konus-Wind observation of GRB 120711A
  75. Konus-Wind observation of GRB 120709A
  76. GRB 120711A: REM NIR early time detection
  77. GRB 120711A: GROND photometric redshift
  78. GRB 120711A: Fermi GBM observation
  79. GRB 120711A: MAXI/GSC detection
  80. GRB 120711A: an bright long GRB detected with INTEGRAL
  81. GRB 120711A: ROTSE-III confirm of Optical Counterpart
  82. Swift detection of GRB 120711B or a new Galactic transient
  83. GRB 120709A: Fermi GBM detection
  84. GRB 120709A: Matched filter analysis of Fermi-LAT data
  85. Konus-Wind observation of GRB 120707A
  86. IPN Triangulation of GRB 120707A
  87. GRB 120709A: Fermi-LAT Detection
  88. GRB 120707A: Fermi GBM Detection of a Bright Burst
  89. GRB 120624B: mm detection at PdBI
  90. GBM triggers 120705.153 & 120705.322 were not GRBs
  91. GRB 120703A: Fermi GBM detection
  92. GRB 120703A: Swift-XRT refined Analysis
  93. GRB 120703A: Enhanced Swift-XRT position
  94. GRB 120703A: Swift-BAT refined analysis
  95. GRB 120624B Suzaku WAM observation of the prompt emission
  96. Konus-Wind observation of GRB 120703A
  97. GRB 120701A: GROND detection of the afterglow
  98. GRB 120703A: Swift detection of a bright burst with an optical afterglow
  99. GRB 120630A: Swift-BAT/-XRT/-UVOT refined analysis
  100. GRB 120701A: Swift-BAT refined analysis

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