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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"

32690 results found.

  1. GRB 090417B: optical observations
  2. GRB090417B: optical observations
  3. GRB 090417B: Swift-BAT refined analysis
  4. GRB 090417A: Swift-BAT refined analysis
  5. GRB 090417A: Early-type nature of the putative host
  6. GRB 090417A: nearby galaxy redshift
  7. GRB 090417: 2MASS galaxy within BAT Localization
  8. GRB 090410: Suzaku WAM observation of the prompt emission
  9. GRB 090410: GROND upper limits
  10. GRB 090410: MITSuME optical upper limits
  11. GRB 090408b: IPN Triangulation
  12. GRB 090328b: IPN Triangulation
  13. GRB 090410: Swift-BAT refined analysis
  14. GRB090408, RIMOTS optical upper limits
  15. GRB 090408: Xinglong TNT optical Upper Limit
  16. GRB 090408B: MASTER II-Kourovka optical observations
  17. GRB 090407: GROND upper limits
  18. GRB 090407: VLT observations
  19. GRB 090407: Swift-XRT refined analysis
  20. GRB 090407: Swift UVOT Upper Limits
  21. GRB 090407: Swift-BAT refined analysis
  22. GRB 090407: ROTSE-III Optical Limits
  23. GRB 090404: GROND upper limits
  24. GRB 090404: further NOT observations
  25. Swift/UVOT observations of GRB090404
  26. GRB 090404: NOT observations
  27. GRB 090404: Swift-XRT Team refined analysis
  28. GRB 090404: Xinglong TNT optical Upper Limit
  29. GRB 090404: Swift-BAT refined analysis
  30. GRB 090401A: Suzaku WAM observation of the prompt emission
  31. GRB 090401B: Suzaku WAM observation of the prompt emission
  32. Konus-Wind observation of GRB 090401B
  33. GRB 090401B: Xinglong TNT optical Upper Limit
  34. GRB 090401B: VLA radio upper limit
  35. GRB 090401B: Upper limits of MITSuME optical observation
  36. GRB090401B, RIMOTS optical upper limits
  37. GRB 090401B: NOT optical observations
  38. GRB 090328: Fermi-LAT refined analysis
  39. Swift/UVOT observations of GRB090401B
  40. GRB 090401B: AGILE refined analysis
  41. Swift/UVOT observations of GRB090401B
  42. GRB 090401B: Swift XRT Refined Analysis
  43. Konus-Wind observation of GRB 090401A
  44. AGILE Gamma-ray detection of GRB 090401B
  45. GRB 090401B: Swift-BAT refined analysis
  46. Swift/UVOT detection of GRB090401B
  47. GRB 090328B: MASTER-Irkutsk prompt optical short burst observations
  48. GRB 090401, Swift-BAT refined analysis
  49. GRB 090323: Further TLS detections - a break?
  50. GRB 090324: Suzaku WAM observation of the prompt emission
  51. GRB 090328: Radio afterglow detection
  52. GRB 090328: BOOTES-3 optical observations
  53. GRB 090328: Fermi GBM Spectral Analysis
  54. GRB 090328: GROND Detection of the Optical/NIR Afterglow
  55. GRB 090328: Gemini South Redshift
  56. GRB 090328: Swift XRT refined analysis
  57. GRB090323: Optical observations from NOT
  58. Konus-Wind observation of GRB 090328
  59. GRB 090328: IPN Triangulation
  60. GRB 090328: Swift UVOT observations
  61. GRB 090323: WSRT Radio Detection
  62. GRB 090328: Possible Swift/XRT detection
  63. GRB 090323: Radio afterglow detection
  64. GRB 090323: Additional Lick observations
  65. GRB 090323: TLS detection at 5 days, no break
  66. GRB 090323: Faulkes Telescope South Observations
  67. GRB 090320B: MASTER-Net prompt optical observations
  68. GRB 090323: RTT150 optical observations
  69. GRB 090323: Lick observations
  70. GRB 090323: Fermi GBM Spectral Analysis
  71. GRB 090323: Optical observation of xinglong TNT
  72. GRB 090323 TLS detection - still bright
  73. GRB 090323: UVOT Detection of Afterglow
  74. GRB 090323: Swift-XRT refined analysis
  75. Konus-Wind observation of GRB 090323
  76. GRB 090323 Gemini-South Redshift
  77. GRB 090323: P60 Afterglow Confirmation
  78. GRB 090323: GROND Detection of the Afterglow and Photo-z
  79. SGR J1550-5418: two Fermi GBM triggers on March 22
  80. GRB 090323: Possible XRT Counterpart
  81. IPN triangulation of GRB090323
  82. Further 15GHz observations of GRB090313
  83. GRB 090313: WSRT Radio Detection
  84. X-shooter observations of GRB 090313
  85. A bright burst from AXP 1E 1547.0-5408/SGR J1550-5418
  86. GRB 090315: Suzaku WAM observation of the prompt emission
  87. GRB 090313: VLT spectroscopy
  88. GRB090313: radio detection with the VLA
  89. Konus-Wind observation of GRB 090315
  90. IPN Triangulation of GRB090315 and Tupi Detection of Muon Increase
  91. GRB 090313, SMARTS optical/IR observations
  92. Further Swift/UVOT observations of GRB 090313
  93. GRB 090313: detection with CARMA in 3mm band
  94. GRB090305B: MASTER-net prompt optical short burst observations
  95. Radio detection of GRB090313
  96. GRB 090313: MITSuME Okayama observation
  97. GRB 090313: Additional Gemini-S photometry
  98. GRB 090313: WSRT Radio Observations
  99. GRB 090313: Gemini-S photometry
  100. GRB 090313: Zadko Telescope observations

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