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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.

"200205A/SWIFT J0840.7-3516" does not adhere to advanced search syntax. Please refer to the documentation and try again.
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"

19596 results found.

  1. GRB 100513A: Swift/UVOT upper limits
  2. GRB 100513A, RIMOTS optical upper limits
  3. GRB 100513A: Swift XRT refined analysis
  4. GRB 100513A: Swift-BAT refined analysis
  5. GRB 100513A: Enhanced Swift-XRT position
  6. GRB 100513A: PAIRITEL NIR afterglow candidate
  7. GRB 100513A: Swift detection of a burst
  8. GRB 100511A: Super-LOTIS early observations
  9. Swift-BAT trigger 421695 is likely not astrophysical
  10. GRB 100511A, RIMOTS optical upper limits
  11. Trigger 421695: Swift detection of a possible burst
  12. GRB100508A: Further Swift/UVOT Observations
  13. GRB 100508A: GROND Detection of the optical afterglow
  14. GRB 100508A: Swift-XRT Refined analysis
  15. GRB 100508A: Swift-BAT refined analysis
  16. GRB 100508A: Enhanced Swift-XRT position
  17. GRB100508A: Swift/UVOT Detection of the Afterglow
  18. GRB 100508A: ROTSE-III Optical Limits
  19. GRB 100508A: Swift detection of a burst
  20. Swift-BAT refined analysis of trigger 421262
  21. GRB 100504A: Fermi GBM observation
  22. An SGR-like burst from the magnetar 1E 1841-04.5 in Kes 73
  23. GRB 100504A: Swift/UVOT Observations
  24. GRB 100418A: Flattening of the Swift/UVOT Optical Light Curve
  25. GRB 100504A: Swift-XRT refined analysis
  26. GRB 100504A: Enhanced Swift-XRT position
  27. GRB 100504A: GROND Upper limits
  28. GRB 100504A: Swift-BAT refined analysis
  29. GRB 100504A: UVOT-enhanced XRT position
  30. GRB 100504A: Swift detection of a burst
  31. Swift-BAT trigger 421072 is not astrophyical
  32. INTEGRAL observations of Swift GRB trigger 421072
  33. GRB100423A : Suzaku WAM observation of the prompt emission
  34. Trigger 421072: Possible Swift detection of a GRB or transient
  35. GRB 100420A: Terskol optical upper limit
  36. GRB 100427A: Swift XRT and UVOT Upper Limits
  37. GRB 100427A: Fermi GBM detection
  38. GRB 100427A detected in ground analysis of Swift BAT data
  39. Konus-Wind observation of GRB 100423A
  40. GRB 100423A: CrAO optical observations
  41. GRB 100418A: Terskol optical observations
  42. GRB 100424A: CrAO optical observations
  43. GRB 100425A: Swift XRT refined analysis
  44. GRB100425A: Swift/UVOT Upper Limits
  45. GRB 100424A: Swift/UVOT Upper Limits
  46. GRB 100425A: Enhanced Swift-XRT position
  47. GRB 100425A: Swift-BAT refined analysis
  48. GRB 100425A: GROND afterglow observation
  49. GRB 100424A: D50 optical limits
  50. GRB 100424A : Lulin early z'-band upper limit
  51. GRB 100424A: GROND Upper Limits
  52. GRB 100424A: PAIRITEL NIR Upper Limits
  53. GRB 100424A: Swift-XRT refined analysis
  54. GRB 100425A: Swift detection of a burst
  55. GRB 100424A, Swift-BAT refined analysis
  56. GRB 100424A: Enhanced Swift-XRT position
  57. GRB 100424A: Prompt enhanced Swift-XRT position.
  58. GRB 100424A: Swift detection of a burst
  59. GRB 100420A: GRT Optical Observation
  60. Swift-BAT refined analysis of trigger 420256
  61. Swift Trigger 420256: D50 optical limits
  62. GRB 100418A: Possible Evidence for a Supernova
  63. GRB 100420A: Swift-BAT refined analysis
  64. GRB 100423A: Swift-BAT refined analysis
  65. Swift Trigger 420256: IAC80 R-band observations
  66. Swift Trigger 420256: BOOTES-2 observations
  67. Swift Trigger 420256: ROTSE-III Optical Limits
  68. Trigger 420256: Swift detection of a possible GRB
  69. GRB 100423A: Skynet/PROMPT Detections
  70. GRB 100423A: GROND discovery of afterglow
  71. GRB 100423A: Swift detection of a burst
  72. Radio afterglow detection of GRB 100418A with the EVLA
  73. GRB 100418A: Continued PAIRITEL NIR Observations
  74. GRB 100418A: Continuing Swift/UVOT Observations
  75. GRB 100420A: Swift/UVOT Upper Limits
  76. GRB 100420A: XRT refined analysis
  77. GRB 100420A: Enhanced Swift-XRT position
  78. GRB 100418A: optical observations
  79. GRB 100418A: MASTER-Net optical observations
  80. GRB 100414A: Confirmation of the X-ray afterglow
  81. GRB 100420A: ROTSE-III Optical Limits
  82. GRB 100420A: Swift detection of a burst
  83. GRB 100418A PAIRITEL NIR Observations
  84. GRB 100418A: ROVOR optical afterglow detection
  85. GRB 100418A: Swift/UVOT Observations
  86. GRB 100418A: Gemini-N redshift confirmation
  87. GRB 100418A: Swift-XRT Refined Analysis
  88. GRB 100418A: Swift-BAT refined analysis
  89. GRB 100418A: Enhanced Swift-XRT position
  90. GRB 100418A: ROTSE-III Optical Limits
  91. GRB 100418A: Swift detection of a burst with a possible optical afterglow
  92. GRB 100413A: Radio Afterglow Detection with the EVLA
  93. GRB 100414A: Swift/UVOT Observations
  94. GRB 100414A: Enhanced Swift-XRT position of candidate afterglow
  95. GRB 100413A: Suzaku WAM observation of the prompt emission
  96. GRB 100413B: Swift Confirmation of Burst
  97. GRB 100414A: Swift-XRT detection of a possible X-ray afterglow
  98. GRB 100413A: Swift-BAT final refined analysis
  99. GRB 100414A: IPN Localization
  100. GRB 100413B : Swift detection of a burst

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