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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"

28099 results found.

  1. GRB 070520B: SARA upper limit
  2. GRB 070520A: SARA upper limit
  3. GRB 070521: SARA upper limit
  4. GRB 070521: Subaru observations and possible host detection
  5. GRB 070520B: Swift/UVOT Upper Limits
  6. GRB 070520A: Subaru Observations
  7. GRB 070521, Swift-BAT refined analysis
  8. GRB 070520A: Swift UVOT Upper Limits
  9. GRB 070520B: Swift-XRT refined analysis
  10. GRB 070521: TAROT La Silla observatory optical observations
  11. GRB070521 - SDSS Pre-Burst Observations
  12. GRB 070521: Swift detection of a burst
  13. GRB 070520A: MITSuME Akeno optical upper limits
  14. GRB 070520B, Swift-BAT refined analysis
  15. GRB 070520A, Swift-BAT refined analysis
  16. GRB 070520A: Swift-XRT refined analysis
  17. GRB 070518: TNG observations
  18. GRB 070520B: Swift detection of a burst
  19. GRB 070520: Xinglong EST optical Upper Limit
  20. GRB 070520: Swift detection of a burst
  21. VLA observation of GRB 070518
  22. GRB 070518: Swift-XRT refined analysis
  23. GRB070518: UVOT refined analysis
  24. GRB 070518, Swift-BAT refined analysis
  25. GRB 070518: OT confirmed form Xinglong TNT observation
  26. GRB 070518: Swift detection of a burst with optical afterglow
  27. GRB070517: Swift-XRT Refined Analysis
  28. GRB 070517, Swift-BAT refined analysis
  29. GRB 070517: Optical search
  30. GRB 070517: Swift detection of a burst
  31. GRB 070509: objects inside XRT error circle
  32. GRB 070512: IPN localization and Konus spectrum of a bright burst
  33. GRB070419A: optical observations
  34. GRB 070509: Swift/UVOT Upper Limits
  35. Konus-Wind and Konus-A observation of GRB 070508
  36. GRB 070510: Swift detection of a possible burst
  37. GRB070509: Swift-XRT Refined Analysis
  38. GRB 070509, Swift-BAT refined analysis
  39. GRB 070508: Suzaku/WAM observation of the prompt emission
  40. GRB 070509: REM observations
  41. GRB070508: Swift/UVOT Observations
  42. GRB 070508, Swift-BAT refined analysis
  43. GRB 070508: REM observations
  44. GRB 070508: TAROT La Silla observatory optical observations
  45. GRB 070508: Swift detection of an intense burst with an optical counterpart
  46. GRB070506: Swift/UVOT Observations
  47. GRB070506: Swift XRT refined analysis
  48. GRB 070506, Swift-BAT Refined Analysis
  49. GRB 070506: Swift detection of a burst with optical afterglow
  50. GRB070429B: VLT observations
  51. GRB070429B: position correction
  52. GRB 070309: Swift-XRT afterglow confirmation
  53. VLA observation of GRB 070429B
  54. Swift/UVOT observations of GRB070429B
  55. GRB 070429B, Swift-BAT refined analysis
  56. Swift/UVOT observations of GRB070429A
  57. GRB 070429A, Swift-BAT refined analysis
  58. GRB 070429A: optical and NIR observations
  59. GRB 070429B: Swift XRT refined analysis
  60. GRB 070429B: ROTSE-III Optical Limits
  61. GRB 070429: ROTSE-III Optical Limits
  62. GRB 070429: Swift detection of a burst
  63. GRB 070427, Swift-BAT Refined Analysis
  64. LT monitoring of GRB070412
  65. GRB 070411: Late-time Keck imaging
  66. GRB070419B: Suzaku WAM observation of the prompt emission
  67. GRB 070420, SMARTS optical/IR afterglow observations
  68. GRB 070411, deep LBT photometry
  69. Konus-Wind observation of GRB 070420
  70. GRB 070411: break in the optical light curve
  71. GRB 070420 Swift-BAT Refined Analysis
  72. GRB 070420: optical rebrightening observed at Mt. John
  73. GRB070420: Swift UVOT continuing observations
  74. GRB 070420: Faulkes Telescope South Observations
  75. GRB 070420: TAROT La Silla observatory optical observations
  76. GRB 070420: NIR and optical afterglow confirmed
  77. GRB 070420: Swift detection of a burst with optical afterglow
  78. GRB 070419A: MITSuME Okayama Observations
  79. GRB 070419A: Early Super-LOTIS Observations
  80. GRB 070419B, Swift-BAT refined analysis
  81. GRB 070419A Swift-BAT Refined Analysis
  82. GRB 070419A, Optical observations
  83. GRB070419 - SDSS Pre-Burst Observations
  84. GRB 070419A: SARA observations
  85. GRB 070419A: NAYUTA Optical Observation
  86. GRB 070419B optical afterglow candidate
  87. GRB 070419A: Optical and IR observations with KANATA
  88. GRB 070419B: optical afterglow candidate
  89. GRB070419A, optical observation
  90. Infrared detection of GRB070419A with UKIRT
  91. GRB 070419A: Kiso Optical observation
  92. GRB 070419: P60 Confirmation of Optical Afterglow
  93. GRB 070419B: Swift detection of a burst
  94. GRB 070419A: ROTSE-III Optical Limits
  95. GRB 070419: Swift detection of a burst
  96. GRB 070418: Optical and IR observations with KANATA
  97. Trigger 276045: Swift detection of a possible burst
  98. GRB 070406: Swift XRT refined analysis
  99. GRB070412: UKIRT-WFCAM JHK upper limits
  100. GRB070412: Swift UVOT observations

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