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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"

28122 results found.

  1. GRB 120311A: Optical follow-up
  2. GRB 120311B: Optical follow-up
  3. GRB 120311A: C88 optical limits
  4. GRB 120312A: Swift/UVOT Upper Limits
  5. GRB 120312A: WHT candidate afterglow
  6. GRB 120312A: NOT observations
  7. GRB 120312A: Swift-XRT refined Analysis
  8. GRB 120312A: Swift-BAT refined analysis
  9. GRB 120311B: C88 optical limits
  10. GRB 120312A: Swift detection of a burst
  11. GROND observations of GRB 120311A
  12. GRB 120311B: Swift/UVOT Upper Limits
  13. GRB 120311B: MITSuME Okayama Optical upper limits
  14. GRB 120311B: Faulkes Telescope North observations
  15. GRB 120311B: Swift-XRT refined Analysis
  16. GRB 120311A: Swift-XRT refined Analysis
  17. GRB 120311B: Enhanced Swift-XRT position
  18. GRB 120311B: Swift-BAT refined analysis
  19. GRB 120311B: Swift-XRT observations
  20. GRB 120311A, Swift-BAT refined analysis
  21. GRB 120311A: Swift/UVOT Upper Limits
  22. GRB 120311A: Enhanced Swift-XRT position
  23. GRB 120311A: Swift-XRT observations
  24. GRB 120308A : LOAO optical observation
  25. GRB 120308A: RTT150 optical observations
  26. GRB 120302A: RTT150 optical observations
  27. GRB 120308A: 1.23m CAHA I-band observations
  28. GRB 120308A: Further PAIRITEL NIR Observations
  29. GRB120308A: MITSuME Ishigakijima Optical Upper Limits
  30. GRB 120308A: Swift/UVOT Detection
  31. GRB 120308A: Swift-XRT refined Analysis
  32. GRB 120308A: Enhanced Swift-XRT position
  33. GRB 120308A: Swift-BAT refined analysis
  34. GRB 120308A: IAC80 I-band observations
  35. GRB 120308A: PAIRITEL NIR observations
  36. GRB 120308A: confirmation of the optical afterglow
  37. GRB 120308A: Swift detection of a burst
  38. GRB 120305A: D50 optical limits
  39. GRB 120305A: Swift spectral lag analysis
  40. GRB 120302A, the review of the sky area in plate archives
  41. GRB 120302A: Swift-BAT refined position and a possible XRT and UVOT counterpart
  42. GRB 120305A: Swift/UVOT Upper Limits
  43. GRB 120305A: Swift-XRT refined Analysis
  44. GRB 120305A: Enhanced Swift-XRT position
  45. GRB 120305A: Swift-BAT refined analysis
  46. GRB 120305A: Swift detection of a short burst
  47. GRB 120302A: GROND detection of an afterglow candidate
  48. GRB 120302A, Swift-BAT refined analysis
  49. GRB 111222A: Swift observation on 2012 February 06/07
  50. GRB 120229A, Swift-BAT refined analysis
  51. GRB 120226A: Fermi-GBM and Fermi-LAT detections; LAT position retraction
  52. IPN Triangulation of GRB 120226A
  53. GRB 120227A: RAPTOR Limit During the Gamma-Ray Emitting Interval
  54. GRB 120224A: optical observation in Mondy observatory
  55. GRB 120224A: GROND detection of the afterglow candidate
  56. GRB 120219A, the review of the sky area in plate archives
  57. GRB 120224A: Swift-XRT refined Analysis
  58. Swift Trigger 516027 is CC Eri
  59. GRB 120224A: Swift/UVOT Upper Limits
  60. GRB 120224A: Swift-BAT refined analysis
  61. GRB 120224A: Enhanced Swift-XRT position
  62. GRB 120224A: Swift detection of a burst
  63. GRB_120215, the_review_of_the_sky_area_in_plate_archives
  64. GRB 1202019A: optical observation in Mondy observatory
  65. GRB 120219A: MASTER prompt and early optical limit and OT discussion
  66. GRB 120219A: 1.23m CAHA optical observations
  67. GRB 120219A: Swift-XRT refined Analysis
  68. GRB 120219A: Swift/UVOT Upper Limits
  69. GRB 120219A: MITSuME Okayama Optical upper limits
  70. GRB 120219A: Swift-BAT refined analysis
  71. GRB 120219A: Enhanced Swift-XRT position
  72. GRB120219A: TNT optical afterglow candidates
  73. GRB 120219A: MASTER-NET prompt and early optical observations
  74. GRB 120219A: Swift detection of a burst
  75. GRB 120218A: Swift-BAT refined analysis
  76. GRB 120215A: Swift/UVOT Upper Limits
  77. GRB 120215A: MITSuME Okayama Optical upper limits
  78. GRB 120215A: Swift-XRT refined Analysis
  79. Fermi GBM detection of an SGR-like burst
  80. GRB 120215A: Enhanced Swift-XRT position
  81. Skynet/PROMPT observations of GRB120215A
  82. GRB 120215A: Swift-BAT refined analysis
  83. GRB 120215A: Swift detection of a burst
  84. GRB 120211A : LOAO optical observations
  85. GRB 120213A: Swift-XRT refined Analysis
  86. GRB 120213A: Swift/UVOT Upper Limits
  87. GRB 120212A: GMG optical observation
  88. GRB 120213A: Enhanced Swift-XRT position
  89. GRB 120212A: MITSuME Ishigakijima Optical Observation
  90. GRB 120213A: Swift-BAT refined analysis
  91. GRB 120212A: Swift-XRT refined Analysis
  92. GRB 120213A: Swift detection of a burst
  93. GRB 120212A: NOT optical observation
  94. GRB 120212A: Swift/UVOT Detection
  95. GRB 120212A: Swift-BAT refined analysis
  96. GRB 120212A: Enhanced Swift-XRT position
  97. GRB 120211A: MITSuME Okayama Ks-band Observation
  98. GRB 120212A: Swift-XRT observations
  99. GRB 120212A: Swift/UVOT detection
  100. GRB 120212A: Faulkes Telescope South afterglow candidate

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