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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"

23611 results found.

  1. GRB080506: Swift/UVOT observations
  2. GRB 080506, Swift-BAT refined analysis
  3. GRB080503, RIMOTS optical upper limit
  4. GRB 080506: Observations from NOT
  5. GRB 080506: optical observation from Ondrejov
  6. GRB 080506: Optical observation with KANATA/TRISPEC
  7. GRB 080506: Swift detection of a burst with optical afterglow
  8. GRB 080503, Swift-BAT lag and time-resolved spectral analysis
  9. GRB080503 XRT refined analysis
  10. GRB 080503, Swift-BAT refined analysis
  11. GRB 080430
  12. GRB 080430
  13. GRB 080430
  14. GRB 080503: Swift detection of a short burst
  15. GRB080430: RTT150 Optical Observations
  16. GRB 080430, Swift-BAT refined analysis
  17. GRB080430: optical observations
  18. GRB080430: Optical observation in AsU CAS Ondrejov & Brno
  19. GRB 080430: Spectroscopy from CAHA
  20. GRB 080430 - SDSS Pre-Burst Observations
  21. GRB 080430: Bootes observation
  22. GRB 080430: Swift detection of a burst with optical afterglow
  23. GRB 080430: TAROT Calern observatory optical observations
  24. GRB 080426, Swift-BAT refined analysis
  25. GRB 080426: Swift detection of a possibly short burst
  26. GRB080319A: MAGIC telescope GeV observation
  27. GRB 080420?: Swift detection of a possible short burst
  28. GRB 080413A: Suzaku/WAM and Swift/BAT joint spectral analysis
  29. GRB 080413B: Rapid PROMPT Observations
  30. Swift XRT and UVOT observations of GRB080414
  31. GRB 080413B: Faulkes Telescope South optical afterglow observations
  32. GRB 080413A: Suzaku WAM observation of the prompt emission
  33. GRB 080413B: Suzaku WAM observation of the prompt emission
  34. GRB 080414: RTT150 optical observations
  35. GRB 080414: A long GRB detected by INTEGRAL
  36. IBAS Alert n. 5257 : not a GRB
  37. GRB080413B
  38. Swift-BAT spectral lag analysis of GRB 080413B
  39. GRB 080413B: Swift XRT refined analysis
  40. GRB 080413B, Swift-BAT refined analysis
  41. GRB 080413A, Swift-BAT refined analysis
  42. GRB 080413A Bootes observation
  43. GRB 080413A: VLT/UVES redshift
  44. GRB 080413B: VLT redshift
  45. GRB 080413B: Swift detection of a possibly short burst with optical counterpart
  46. GRB 080413: TAROT Calern observatory optical observations
  47. GRB 080413: Swift detection of a burst with an optical afterglow
  48. GRB 080411, Swift-BAT refined analysis
  49. GRB 080411: VLT redshift
  50. GRB080330: MAGIC telescope GeV observation
  51. GRB 080411: Swift detection of a bright burst
  52. GRB 080409: Swift-BAT refined analysis
  53. GRB 080330 optical observations
  54. GRB 080409: Swift detection of a burst
  55. GRB 080408: Analysis of AGILE Gamma-ray data
  56. GRB 080408: GRB Localization by SuperAGILE
  57. GRB 080405: Swift-BAT refined analysis
  58. GRB 080405: Mars Oddysey and Swift-BAT detection, possible host galaxy
  59. GRB 080325: optical upper limit
  60. GRB 080330: Prompt PROMPT Observations
  61. GRB080330: optical observations
  62. GRB080330: optical observations
  63. GRB 080328: Suzaku WAM observation of the prompt emission
  64. GRB 080330, Swift-BAT refined analysis
  65. Konus-Wind observation of GRB 080328
  66. GRB080330: LOAO R-band Detection
  67. GRB 080330: NOT redshift
  68. GRB 080330: TAROT Calern observatory optical observations
  69. GRB080330 - SDSS Pre-Burst Observations
  70. GRB 080330: Liverpool Telescope Optical observations
  71. GRB 080330: Swift detection of a burst with an optical counterpart
  72. GRB 080330: TAROT Calern observatory optical detection
  73. GRB 080328: BTA optical imaging and spectroscopy
  74. GRB 080328, Swift-BAT refined analysis
  75. GRB 080328: Swift XRT refined analysis
  76. GRB 080325, Swift-BAT refined analysis
  77. Swift/UVOT observations of GRB080328
  78. GRB080325 - I and z-band Imaging
  79. GRB080328: Faulkes Telescope North observations
  80. GRB 080328: Swift detection of a burst with an optical counterpart
  81. GRB 080325: Subaru detection of NIR afterglow candidate
  82. GRB 080325: GROND Observations
  83. GRB 080325: Swift detection of a burst
  84. GRB 080319B: Spitzer Mid-infrared Observations
  85. GRB 080319C: Suzaku WAM observation of the prompt emission
  86. GRB 080320, Swift-BAT refined analysis
  87. GRB 080319B: TORTORA light curve
  88. GRB 080319D, Swift-BAT refined analysis
  89. GRB 080320: Early Super-LOTIS Observations
  90. Konus-Wind observation of GRB 080319C
  91. GRB 080319B optical observations
  92. GRB 080319C, Swift-BAT refined analysis
  93. GRB 080320 - SDSS Pre-Burst Observations
  94. GRB 080320: Swift detection of a burst
  95. GRB 080319B : Lulin observation of temporal break at 0.2 days
  96. GRB 080319C - SDSS Pre-Burst Observations
  97. GRB 080319A SDSS Pre-Burst Observations
  98. Swift-BAT trigger 306829 is IGR J16479-4514
  99. GRB080319B - SDSS Pre-Burst Observations
  100. GRB 080319B, Swift-BAT refined analysis

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