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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').
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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"

15406 results found.

  1. GRB 090515: WIYN NIR Upper Limit
  2. GRB 090515: PAIRITEL Upper Limits
  3. GRB 090510: Suzaku WAM observation of the prompt emission
  4. GRB090510: VLT/FORS2 spectroscopic redshift
  5. GRB 090510: GROND observations
  6. GRB 090510: Fermi-LAT follow-up analysis
  7. GRB 090509, further Swift-BAT refined analysis
  8. GRB 090510: correction to GCN 9344
  9. Konus-Wind observation of GRB 090510
  10. GRB 090510: correction to coordinates in GCN 9338
  11. GRB 090510: NOT afterglow confirmation
  12. GRB 090510: Fermi GBM detection
  13. Fermi LAT detection of GRB 090510
  14. GRB 090418A: optical observation
  15. GRB 090323: optical observations
  16. GRB 090428B: Suzaku WAM observation of the prompt emission
  17. GRB 090426: optical observations
  18. GRB 090429D: Fermi GBM detection
  19. GRB 090429B: Gemini-N further nIR observations
  20. GRB 090427C: Fermi GBM detection
  21. GRB 090426C: Fermi GBM detection
  22. Konus-Wind observation of very bright GRB 090427
  23. GRB 090428B: Fermi GBM detection
  24. GRB 090428: Fermi GBM detection
  25. GRB 090418A BVRcIc field calibration
  26. GRB 090429B: RIMOTS optical upper limits
  27. GRB090429B: Gemini-N infrared IR candidate
  28. GRB 090429B: GROND Observations
  29. GRB 090423: pseudo burst at z=1 and its relation to GRB 080913
  30. GRB 090424: Continued R-band monitoring
  31. GRB 090423: millimeter detection
  32. GRB 090425: Fermi GBM detection
  33. GRB 090424: Suzaku WAM observation of the prompt emission
  34. GRB 090426: VLT spectroscopy
  35. GRB090426 Swift/UVOT observations
  36. GRB 090426 Keck LRIS redshift
  37. GRB 090423: GROND second epoch imaging and refined SED
  38. GRB090426: Observation for Optical counterpart from MIRO
  39. GRB 090426, RIMOTS optical upper limits
  40. GRB090424: R-band detection (37.5 hrs post-burst), jet break?
  41. GRB 090423: Fermi GBM observation (correction of isotropic equivalent energy)
  42. VLA radio observation of high-z GRB 090423
  43. GRB090423: Y-band limit
  44. GRB 090423: Y-band field calibration update/correction
  45. GRB 090423: Swift/BAT spectral lag results
  46. GRB 090424 optical observations
  47. GRB 090423: energetic, luminosity and jet break
  48. Swift/UVOT observations of GRB 090424
  49. GRB 090423: Fermi GBM observation
  50. GRB 090423 limiting magnitudes
  51. GRB 090423: Near infrared observation at Okayama Observatory
  52. GRB 090423: Deep z-band upper limit and confirmation of photo-z
  53. GRB 090423: GROND detection and preliminary photo-z
  54. GRB 090423: Swift-XRT refined analysis
  55. GRB090418A Rc-band photometry
  56. GRB090423, RIMOTS optical upper limits
  57. GRB 090423: UKIRT data further analysis
  58. GRB 090423: P60 Observations
  59. GRB 090418A: Konus-Wind and Swift/BAT joint spectral analysis
  60. GRB 080410: GAO 150cm telescope Optical Observation
  61. GRB 090418B: Suzaku WAM observation of the prompt emission
  62. GRB 090418C: Fermi GBM Detection
  63. GRB 090418A: optical observations
  64. GRB 090419: Swift/UVOT Observations
  65. GRB 090417B Correction to the BAT refined analysis position
  66. Konus-Wind observation of GRB 090418B
  67. GRB 090419: GROND detection of afterglow candidate
  68. VLA radio detection of GRB 090418
  69. GRB 090418B: Detection of a bright burst from Swift-BAT slew data
  70. GRB 090417B: Galaxy redshift
  71. GRB 090417B: Swift-XRT refined analysis
  72. GRB 090411B: Suzaku WAM observation of the prompt emission
  73. GRB 090411A: Suzaku WAM observation of the prompt emission
  74. GRB 090417B: Subaru NIR Observations
  75. GRB 090417B: Liverpool Telescope observations
  76. GRB 090410: Suzaku WAM observation of the prompt emission
  77. GRB 090410: GROND upper limits
  78. Konus-Wind and Konus-RF observations of GRB 090408b
  79. GRB 090409: Fermi GBM detection
  80. GRB090408, RIMOTS optical upper limits
  81. GRB 090407: Swift UVOT Upper Limits
  82. Konus-Wind and Konus-RF observations of GRB 090406
  83. GRB 090404: nIR observations at Calar Alto
  84. GRB 090404: GROND upper limits
  85. GRB 090404: further NOT observations
  86. Swift/UVOT observations of GRB090404
  87. GRB 090404: optical observations at BOOTES-3 and 1.5-m OSN
  88. GRB 090401A: Suzaku WAM observation of the prompt emission
  89. GRB 090401B: Suzaku WAM observation of the prompt emission
  90. Konus-Wind observation of GRB 090401B
  91. GRB 090401B: Upper limits of MITSuME optical observation
  92. GRB090401B, RIMOTS optical upper limits
  93. GRB 090328: Fermi-LAT refined analysis
  94. Swift/UVOT observations of GRB090401B
  95. Swift/UVOT observations of GRB090401B
  96. Konus-Wind observation of GRB 090401A
  97. Swift/UVOT detection of GRB090401B
  98. GRB 090324: Suzaku WAM observation of the prompt emission
  99. GRB 090326: Fermi GBM detection
  100. GRB 090328: BOOTES-3 optical observations

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