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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"

21018 results found.

  1. GRB 111228A: TAROT Calern observatory. OT decay stopped
  2. GRB 111228A, optical observations
  3. GRB 111228A: TAROT Calern observatory. OT seems still bright
  4. GRB 111225A, optical observations
  5. GRB 111228A: Xinglong TNT confirms the optical afterglow
  6. GRB 111205A: optical observations
  7. GRB 111225A: Swift/UVOT Observations
  8. GRB 111225A: PAIRITEL NIR Upper Limits
  9. GRB 111225A: 1.23m CAHA optical observations
  10. GRBv111225A: Xinglong TNT optical afterglow
  11. GRB 111225A: Super-LOTIS early detection
  12. GRB 111225A: TAROT Calern observatory optical observations
  13. GRB111222A: GMG optical observation
  14. GRB 111222A: Xinglong TNT observation
  15. GRB 111222A: Swift/UVOT Observations
  16. GRB 111222A: Swift-XRT observations
  17. GRB 111215A: EVLA observations
  18. GRB 110820A: optical observations in Maidanak observatory
  19. GRB 111215B: Swift/UVOT Upper Limits
  20. GRB 111215B: Swift-XRT observations
  21. GRB 111215A: WHT, LT and NOT imaging
  22. GRB 111215A: TNG K-band observations
  23. GRB 111215A: Swift/UVOT Upper Limits
  24. Possible detection of pre-trigger X-ray emission from GRB 111215A by MAXI/GSC
  25. GRB 111215A: OSN I-band observations
  26. GRB 111215A: MASTER-Net optical prompt and follow up observations
  27. GRB 111215A, Optical Observations
  28. GRB 111215A: GMG optical upper limit
  29. GRB 111215A : Xinglong TNT upper limit
  30. GRB 111212A: GROND observations
  31. GRB 111211A: VLT/X-shooter redshift
  32. GRB 111211A: NOT afterglow confirmation
  33. GRB 111211A: Swift/XRT target of opportunity observation
  34. GRB 111212A: Swift/UVOT Upper Limits
  35. GRB 111212A: Swift-XRT observations
  36. GRB 111211A: GROND afterglow candidate
  37. GRB 111210A: Xinglong TNT upper limit
  38. GRB 111209A - ATCA 34GHz upper limit
  39. GRB 111210A: GROND observations
  40. GRB 111210A: Gemini-North candidate counterpart
  41. GRB 111209A: Rebrightening seen by GROND
  42. GRB111210A: MITSuME Okayama J-band upper-limit
  43. GRB 111210A: Swift/UVOT Upper Limits
  44. GRB 111209A: VLT/X-shooter redshift
  45. GRB 111209A: GROND Afterglow observations
  46. GRB 111209A: PROMPT optical observations of early afterglow
  47. GRB 111208A: Lightbuckets Optical Observations
  48. GRB 111209A: Swift UVOT refined analysis
  49. GRB 111209A: Swift Burst of Interest
  50. GRB 111205A: GROND observations
  51. GRB 111209A: Faulkes Telescope North observations
  52. GRB 111209A: REM NIR detection
  53. GRB 111209A: TAROT La Silla observatory optical detection
  54. GRB 111208A: Swift XRT/UVOT observations
  55. GRB 111205A: Swift XRT Observations
  56. GRB 111204A: TNG NIR observations
  57. GRB 111201A: GMG optical observation
  58. GRB 111204A: GROND Observations
  59. GRB 111204A: Swift/UVOT Upper Limits
  60. GRB 110921A: optical observations in Maidanak observatory
  61. GRB 111204A: MASTER optical observations
  62. GRB 111201A: Swift/UVOT Upper Limits
  63. GRB111201A: Swift-XRT observations
  64. GRB 111129A: Swift/UVOT Detection
  65. GRB 111129A, GROND afterglow observations
  66. GRB 111123A: Swift/UVOT Upper Limits
  67. GRB 111123A - NOT optical observations
  68. GRB 111123A, GROND observations
  69. GRB 111123A: GMG optical observation
  70. GRB 111117A: Refined Chandra Astrometry
  71. GRB 111121A: Swift/UVOT Upper Limits
  72. GRB 111121A: Magellan/Megacam observations
  73. GRB 111117A: Chandra detection of the afterglow
  74. GRB 111117A: Gemini Afterglow Limits
  75. GRB 111117A: further NOT observations
  76. GRB 111117A: EVLA observations
  77. GRB 111117A: TNG observations
  78. GRB 111117A: Swift/UVOT Upper Limits
  79. GRB 111117A: GROND observations
  80. GRB 111117A: Gemini host observation
  81. GRB111117A: Magellan IMACS observations
  82. GRB111107A: Further ATCA observations - no detection
  83. GRB 111117A: NOT observations
  84. GRB 111117A: Chandra ToO observation scheduled
  85. GRB 111117A: GMG upper limit
  86. GRB111107A: ATCA observations - upper limit and a possible detection
  87. XRF 111111A/MAXI J0158-744: MAXI GSC and SSC detection of a soft X-ray transient near SMC
  88. GRB 111109A: Swift/UVOT Photometry
  89. GRB 111109A: Swift-XRT observations
  90. Continued Skynet observations of GRB111107A
  91. GRB 111107A: VLT/X-shooter spectroscopy
  92. GRB 111107A: Swift/UVOT Afterglow Analysis
  93. GRB 111107A: Gemini-South Redshift
  94. GRB 111107A: GROND observations
  95. Skynet observations of GRB 111107A
  96. GRB 111103B : WIYN 3.5m NIR observations
  97. GRB111103B Swift/UVOT Upper Limits
  98. GRB 111103B: optical observations from TAU, Ka-Dar
  99. Trigger 506913: MASTER detection of Swift J1922.7-1716 optical counterpart
  100. GRB 111022B: MASTER OT observations

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