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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"

28101 results found.

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

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