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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"

37766 results found.

  1. GRB 190114A: OSN Detection
  2. GRB 190114B: Swift detection of a burst
  3. GRB 190114A: Swift-BAT refined analysis
  4. GRB 190103B: Swift/UVOT Upper Limits
  5. GRB 190114A: Swift-XRT refined Analysis
  6. GRB 190114A: GROND detection of the afterglow
  7. GRB 190114A: Enhanced Swift-XRT position
  8. GRB 190114A: VLT/X-shooter redshift
  9. GRB 190114A: Prompt enhanced Swift-XRT position
  10. GRB 190114A: Possible UVOT Detection
  11. GRB 190114A: Swift detection of a burst
  12. GRB 190110A：Insight-HXMT/HE detection
  13. Konus-Wind observation of GRB 190110A
  14. GRB 190110A, Swift-BAT refined analysis
  15. Correction to GCN Circular 23663: GRB 190109A: Swift UVOT Upper Limits
  16. Konus-Wind observation of GRB 190103A
  17. GRB 190110A: Fermi GBM detection
  18. GRB 190110A: Swift detection of a burst
  19. GRB 181228A: FRAM-ORM optical limit
  20. GRB 190106A: GMG continued observation
  21. GRB 190109B: Fermi GBM observation
  22. GRB 190106A: OSN Afterglow Observations
  23. GRB 190109B: Swift/UVOT Upper Limits
  24. GRB 190109A: Swift/UVOT Upper Limits
  25. GRB 190109B: Swift-XRT refined Analysis
  26. GRB 190106A: optical observations, possible jet break detection
  27. GRB 190106A: Liverpool Telescope observations
  28. GRB 190109B: Swift-BAT refined analysis
  29. GRB 190109A: Fermi GBM observation
  30. Correction to the GCN circ. 23654 / GRB 190109B: Mondy optical upper limit
  31. GRB 190109B: COATLI Optical Observations
  32. GRB 190109B: BOOTES-5/JGT optical observations
  33. GRB 190109B: Mondy optical upper limit
  34. GRB 190109A: Swift-BAT refined analysis
  35. GRB 190109B: Enhanced Swift-XRT position
  36. GRB 190109B: Swift-XRT observations
  37. GRB190109A: MITSuME Akeno optical upper limits
  38. GRB 190109B: Swift detection of a burst
  39. IPN triangulation of GRB 190103A (long)
  40. GRB 190109A: Swift-XRT refined Analysis
  41. GRB 190109A: Enhanced Swift-XRT position
  42. GRB 190109A: Prompt enhanced Swift-XRT position
  43. GRB 190109A: Swift detection of a burst
  44. GRB 190106A: Mondy optical observations
  45. GRB 190106A : continued TSHAO optical observations
  46. Konus-Wind observation of GRB 190106A
  47. GRB 190106A: NEXT-0.6m and Xinglong-2.16m photometric single powerlaw decay
  48. IERCOO/ICSP optical observation of GRB 190106A
  49. GRB 190106A: GMG photometry in the 2nd night
  50. GRB 190106A: Swift-XRT refined Analysis
  51. GRB 190106A: VLT/X-shooter redshift confirmation
  52. GRB 190103B: CALET Gamma-Ray Burst Monitor detection
  53. GRB 190106A: GMG spectral results
  54. GRB 190106A: update of the Xinglong-2.16m spectroscopy
  55. GRB 190106A: OASDG optical observations
  56. GRB 190106A: BOOTES-4/MET optical observations
  57. GRB 190106A: Swift/UVOT Detection
  58. GRB 190106A: Swift-BAT refined analysis
  59. GRB 190106A: Bassano Bresciano Observatory optical detection
  60. GRB 190106A: Xinglong-2.16m spectroscopy
  61. GRB 190106A: GWAC-F60B optical detection
  62. Fermi GBM Observations of IceCube-190104A
  63. GRB 190106A : TSHAO optical observations
  64. GRB 190106A: Enhanced Swift-XRT position
  65. GRB 190106A: GMG detection
  66. GRB 190106A: MITSuME Akeno optical observation
  67. GRB 190106A: MASTER Amur OT detection
  68. GRB 190106A: Swift detection of a burst with an optical counterpart
  69. Konus-Wind observation of GRB 190103B
  70. GRB 190103A: AstroSat CZTI detection
  71. Fermi LAT Gamma-ray Observations of IceCube-190104A
  72. GRB 190103B: Bassano Bresciano observatory upper limit
  73. GRB 190103B: Swift-BAT refined analysis
  74. GRB 190103B: Swift-XRT refined Analysis
  75. GRB 190103B: Enhanced Swift-XRT position
  76. GRB 190103B: Swift detection of a burst
  77. GRB 181201A: photometric signature of the SN
  78. GRB 190103A: AGILE/MCAL detection of a burst
  79. GRB 181231A: BOOTES-2/TELMA optical observations
  80. GRB 181231A: Fermi GBM detection
  81. GRB 181231A: Fermi-LAT detection
  82. GRB 181228A: Mondy and AbAO optical upper limits
  83. GRB 181225A: further Swift-XRT observations
  84. GRB 181228A: Global MASTER Net OT is the same REM IR transient
  85. GRB 181228A: possible NOT optical detection
  86. Fermi GBM trigger 567868083/181230547 is not a GRB
  87. GRB 181227A: CALET Gamma-Ray Burst Monitor detection
  88. GRB 181228A: MITSuME Akeno optical upper limits
  89. Konus-Wind observation of GRB 181227A
  90. GRB 181228A: Xinglong-2.16m optical upper limit
  91. GRB 181227A: Global MASTER Net oprtical inspection
  92. Swift Trigger 880127 is not a GRB
  93. GRB 181228A: Swift-XRT refined Analysis
  94. GRB 181228A: Swift-BAT refined analysis
  95. GRB 181222B: Swift follow-up observations of MASTER optical transient J204928.79+245744.0
  96. GRB 181228A: Swift/UVOT Upper Limits
  97. GRB 181228A: TSHAO optical upper limit
  98. GRB 181228A: Fermi GBM observation
  99. IPN Triangulation of GRB 181227A (long)
  100. GRB 181228A: Global MASTER Net OT detection

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