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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"

23614 results found.

  1. GRB 140219A: MAXI/GSC detection
  2. GRB 140219A: Retraction of X-ray afterglow
  3. GRB 140219A: MASTER optical brightening inside XRT-5 error box detection
  4. GRB 140219A: iPTF optical observations
  5. GRB 140102A: TAOS early optical afterglow detection
  6. GRB 140219A: optical observations of XRT source #5
  7. GRB 140221A: Results from Swift XRT tiled observations
  8. GRB 140219A: Xuyi and Nanshan upper limits
  9. GRB 140219A: results from Swift XRT and UVOT tiled observations
  10. GRB 140219A: MASTER before and after GRB observational arguments of the exceptionally Dark GRB
  11. Konus-Wind observation of exceptionally bright GRB 140219A
  12. GRB 140219A: Fermi-LAT detection of a burst
  13. IPN Triangulation of extremely bright long GRB 140219A
  14. Swift follow-up of an Integral weak transient
  15. GRB 140213A: Continued Skynet R-COP/PROMPT Observations of the Optical Afterglow
  16. GRB 140215A: RAPTOR Observations During Gamma-Ray Emitting Interval
  17. GRB 140213A: Continued Skynet R-COP/PROMPT Detections of a Rebrightening Optical Afterglow
  18. GRB 140215A: Continued Skynet PROMPT Observations of the Optical Afterglow
  19. GRB 140211A: Khureltogot optical upper limits
  20. GRB 140215A: Continued RATIR Optical and NIR Observations
  21. GRB 140215A: Swift/UVOT Detection
  22. GRB 140211A: Swift-XRT and UVOT observations
  23. GRB 140215A: Continued RATIR Optical and NIR Observations
  24. GRB 140215A: MITSuME Okayama Optical Observation
  25. GRB 140215A: ISON-NM optical observations
  26. GRB 140215A: Swift-XRT refined Analysis
  27. GRB 140215A: Enhanced Swift-XRT position
  28. GRB 140215A: RATIR Optical and NIR Observations
  29. GRB 140215A: Swift detection of a burst with optical counterpart
  30. GRB 140213A: Swift-BAT refined analysis
  31. GRB140206A: Discovery Channel Telescope Optical Detection
  32. GRB 140213A: Enhanced Swift-XRT position
  33. GRB 140213A: GROND Detection of the Optical/NIR Afterglow
  34. GRB 140213A: Skynet R-COP Detection of Optical Afterglow
  35. GRB 140213A: Swift-XRT observations
  36. GRB 140213A: Swift detection of a burst
  37. Trigger 586482: Swift detection of GROJ1744-28
  38. GRB140209A: Swift/UVOT observations.
  39. GRB 140209A: Swift-XRT observations
  40. GRB 140211A: MITSuME Okayama upper limits
  41. GRB 140211A: Swift detection of a burst
  42. GRB 140209A: Early RAPTOR Optical Detection
  43. GRB 140206A: Bassano Bresciano Observatory optical upper limit
  44. GRB 140209A: optical observations
  45. GRB 140209A: Swift detection of a burst
  46. Konus-Wind observation of GRB 140206B
  47. GRB 140206A: MITSuME Akeno detection of the optical counterpart
  48. GRB 140206A: TNG redshift confirmation
  49. GRB 140206A: Optical Observations via Virtual Telescope
  50. GRB 140206A: NOT redshift
  51. GRB 140206A: TNG optical observations
  52. GRB 140206A: T100 observations
  53. GRB 140206A: Swift/UVOT Detection
  54. GRB 140206A: theoretical prediction of redshift and of supernova occurrence
  55. GRB 140206A: Enhanced Swift-XRT position
  56. GRB 140206A: ISON-Ussuriysk optical observations
  57. GRB 140206B: Fermi GBM detection
  58. GRB 140206A: Nanshan optical observations
  59. GRB 140206A: Swift detection of a burst
  60. GRB 140129A: 5 GHz VLA observations
  61. GRB 140129A: Continued RATIR Optical and NIR Observations
  62. GRB 140129A: Khureltogot optical limit
  63. GRB 140129B: Swift/UVOT Detection
  64. GRB 140129A: Continued RATIR Optical and NIR Observations
  65. GRB 140102A: MITSuME Akeno Optical observation
  66. GRB 140129B: Swift-XRT refined Analysis
  67. GRB 140129B: MASTER OT early light curve
  68. GRB 140129A: CARMA early observations
  69. GRB140129A: RAPTOR Observations of the Early Afterglow
  70. GRB 140129A: MITSuME Okayama upper limits
  71. GRB 140129B: Enhanced Swift-XRT position
  72. GRB 140129A: Swift/UVOT Observations
  73. GRB 140129A: Swift-XRT refined Analysis
  74. GRB 140129B: Swift detection of a burst with an optical afterglow
  75. GRB 140129A: Enhanced Swift-XRT position
  76. GRB 140129A: RATIR Optical and NIR Observations
  77. GRB 140129A: Swift detection of a burst with an optical afterglow
  78. GRB 140122A/Fermi412093190: MASTER-Net early optical observations
  79. GRB 140114A: optical upper limit
  80. Correction: MAXI J1421-613: Skynet PROMPT/R-COP observations
  81. Konus-Wind observation of GRB 131215A
  82. GRB 140118A/MAXI J1421-613: Skynet PROMPT/R-COP observations
  83. GRB 140118A: RATIR Optical and NIR Observations
  84. Swift Trigger 584155 is MAXI J1421-613
  85. GRB 140118A: Swift detection of a burst
  86. GRB 140110A: Further Swift-XRT Observation
  87. GRB 140103A: MASTER-Net early OT detection
  88. GRB 140103A: optical upper limit
  89. GRB 140114A: NOT afterglow observations
  90. GRB 140114A: Continued RATIR Optical and NIR Observations
  91. GRB 140114A: MITSuME Okayama upper limits
  92. GRB 140114A: ROTSE-III Optical Limits
  93. GRB 140114A: Swift/UVOT Upper Limits
  94. GRB 140103A: AAO optical afterglow candidate
  95. GRB 140104B: Further Swift XRT observations
  96. GRB 140114A: Enhanced Swift-XRT position
  97. GRB 140114A: RATIR Optical and NIR Afterglow Detection
  98. GRB 140102A: AAO optical upper limits
  99. GRB 140114A: P60 Observations
  100. GRB 140114A: Swift detection of a burst

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