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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.

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subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

32736 results found.

  1. GRB 091208B: Faulkes Telescope North and South Optical Afterglow
  2. GRB 091208A, RIMOTS optical upper limits
  3. GRB 091208B: MITSuME Akeno Optical Observation
  4. GRB 091208B: MITSuME Okayama Optical Observation
  5. GRB 091208B, RIMOTS optical upper limits
  6. GRB 091208B: BOOTES-3 optical afterglow
  7. GRB 091208: ROTSE-III Optical Limits
  8. Short X-ray Transient, RIMOTS optical upper limits
  9. A small revision to the GRB-naming convention
  10. GRB 091123: Suzaku WAM observation of the prompt emission
  11. GRB 091127: Skynet/PROMPT Observations of Possible Host Galaxy
  12. GRB 091127: GAO 150cm telescope Optical Observation
  13. GRB 091202: GTC & CAHA optical/nIR afterglow candidate
  14. GRB 091109A: GROND confirmation of redshift z = 3.5
  15. GRB091127: Continuing Swift/UVOT Observations
  16. GRB 091127, SMARTS optical/IR afterglow observations
  17. GRB091202: Swift-XRT refined analysis
  18. GRB 091202: Swift/UVOT Upper Limits
  19. GRB 091202: Liverpool Telescope observations
  20. GRB 091202: Optical and NIR observations
  21. GRB 091127: Zadko Telescope Observations
  22. GRB 091126A: Suzaku WAM observation of the prompt emission
  23. GRB 091202: Liverpool Telescope Observations
  24. GRB 091127: redshift confirmation with X-shooter
  25. GRB 091117: Chandra Observations
  26. GRB 091020: MASTER-Net optical polarization observations
  27. GRB 091127: Skynet/PROMPT Continued Observations of Fading
  28. Short X-ray Transient Detection by MAXI/GSC
  29. Konus-Wind observation of very long GRB 091123
  30. GRB 091130A: Xinglong TNT upper limit
  31. GRB 091127: Suzaku WAM observation of the prompt emission
  32. GRB 091130B: Swift-XRT team refined analysis
  33. GRB 091130B: Swift-BAT refined analysis
  34. GRB 091130B: Swift/UVOT Upper Limits
  35. GRB 091127: Skynet/PROMPT Observations of Fading
  36. GRB 091130B: MASTER observations
  37. GRB 091130B: SDSS galaxy at XRT location
  38. GRB 091130: MASTER observations
  39. GRB 091127: Radio observations
  40. Konus-Wind observation of GRB 091127
  41. GRB 091127: optical observations
  42. GRB 091127: LABOCA/APEX submm observations
  43. GRB 091127: Further NOT optical observations
  44. GRB 091127: Fermi GBM detection
  45. GRB 091127: MASTER early optical transient polarimetry
  46. GRB 091127: Gemini-N redshift
  47. GRB 091127: Swift-XRT afterglow detection and analysis
  48. GRB 091127: Swift/UVOT observations
  49. GRB 091127: CAHA 1.23m I-band observations
  50. GRB 091127: Swift-BAT refined analysis
  51. GRB 091127: NOT observations
  52. GRB 091127 : GROND observations
  53. GRB 091127: REM NIR afterglow detection
  54. GRB 091127: Swift/UVOT Detection of an Optical Afterglow
  55. GRB 091127: Liverpool Telescope afterglow candidate
  56. IPN Triangulation of GRB091120
  57. Konus-Wind observation of GRB 091120
  58. GRB 091117A: Suzaku WAM observation of the prompt emission
  59. GRB 091117: TNG optical observations
  60. GRB 091117A: Swift/UVOT followup observations
  61. GRB 091117: 2nd epoch of Magellan optical observations
  62. GRB 091117: VLA radio observations
  63. GRB 091117: Swift-XRT observations
  64. GRB 091117 BAT refined analysis
  65. GRB 091117: Evidence for Variability of XRT Source #1
  66. GRB091117: Gemini South Observations
  67. GRB 091117: Swift XRT refined analysis
  68. GRB 091117: Gemini-North spectroscopy of DSS galaxy
  69. Konus-Wind observations of GRB 091117A
  70. GRB 091117: Magellan optical observations
  71. GRB 091117: XRT source coincident with a DSS galaxy
  72. GRB 091112: Suzaku WAM observation of the prompt emission
  73. GRB 091102A: Suzaku WAM observation of the prompt emission
  74. GRB 091109B: Suzaku WAM observation of the prompt emission
  75. GRB091111: Swift XRT refined analysis
  76. Konus-Wind and Konus-RF observations of GRB 091031
  77. GRB 091112: Swift-BAT refined analysis
  78. GRB 091112: Fermi GBM observation
  79. GRB 091031: Fermi LAT detection of a faint burst
  80. GRB 091111: BOOTES-3 contemporaneous imaging
  81. GRB 091111: a faint long GRB detected with INTEGRAL
  82. GRB 091109A: GROND and VLT observations
  83. GRB 091109B: Swift/UVOT Upper Limits
  84. GRB 091109B: VLT afterglow confirmation
  85. GRB 091109B: Swift-XRT Team refined analysis
  86. GRB 091109b: Magellan Observations
  87. GRB 091109B: Swift-BAT refined analysis
  88. GRB 091109B: Optical limits from Watcher
  89. GRB 091109B: ROTSE-III Optical Limits
  90. GRB091109: Correction to GCN 10139
  91. GRB 091109: Swift-XRT refined analysis
  92. GRB 091109: BOOTES-3 observations
  93. GRB 091109: Swift/UVOT observations
  94. GRB 091109: Faulkes Telescope South observations
  95. GRB 091109: Swift-BAT refined analysis
  96. GRB 091029: Observations from Stardome Observatory
  97. GRB 091104: Swift-BAT refined analysis
  98. GRB 091104: Swift XRT Refined Analysis
  99. GRB 091104: Swift/UVOT Upper Limits
  100. GRB091026 : IRSF NIR upper limit

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