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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"

12178 results found.

  1. GRB 141121A: Mondy optical observations
  2. GRB 141121A: AAO optical observations
  3. GRB 141121A: Swift-XRT refined Analysis
  4. GRB 141118A: iPTF Optical Observations
  5. GRB 141121A: MAXI/GSC detection
  6. Konus-Wind observation of GRB 141118A
  7. Konus-Wind observation of GRB 141109A
  8. GRB 141109B: IRAM 30m millimetre observations
  9. GRB 141109B: Swift-XRT refined Analysis
  10. GRB 141109A: Swift-XRT refined Analysis
  11. GRB 141109B: Swift-BAT refined analysis
  12. GRB 141109B: Swift detection of a burst
  13. GRB 141104A: Swift-XRT observations
  14. GRB 141017A: Skynet PROMPT-CTIO/SSO Observations
  15. Konus-Wind observation of GRB 141104A
  16. IPN Triangulation of GRB 141104A (long/very bright)
  17. Konus-Wind observation of GRB 141102A
  18. GRB 141102A: Fermi-LAT detection
  19. GRB 141031A, Swift-BAT refined analysis
  20. GRB 141031B: Swift detection of a burst
  21. GRB 141031A: Swift detection of a burst
  22. GRB 141028A: Swift-XRT observations
  23. GRB 141029A: MAXI/GSC detection
  24. GRB 141028A: Fermi-LAT detection
  25. GRB 141026A: GTC spectroscopy
  26. GRB 141026A: SAO RAS Zeiss-1000 observations
  27. GRB 141020A: AAO optical upper limit
  28. GRB 141020A: Khureltogot optical upper limit
  29. GRB 141020A: Mondy optical observations
  30. GRB141015A iTelescope observation
  31. GRB 141022A: GROND Detection of a possible Optical Afterglow Candidate
  32. GRB 141020A: Swift-XRT refined Analysis
  33. GRB 141020A: 1.4 GHZ observation
  34. GRB 141020B: MAXI/GSC detection
  35. Konus-Wind observation of GRB 141017A
  36. GRB 141020A: Swift detection of a burst with an optical counterpart
  37. GRB 141017A: Swift-XRT refined Analysis
  38. GRB 141015A: Super-LOTIS early observations
  39. Konus-Wind observation of GRB 141011A
  40. IPN Triangulation of GRB 141011A (short/hard)
  41. GRB 141005A: iTelescope.Net T21 Optical Observation
  42. GRB 141004A: Fermi GBM observation
  43. Konus-Wind observation of GRB 141005A
  44. GRB 141004A: Swift-BAT refined analysis
  45. GRB 141005A: P60 probable afterglow deteaction
  46. GRB 141004A: Swift detection of a burst with an optical counterpart
  47. Swift observations of HD 305560
  48. GRB 140930B: MASTER early possible OT detection
  49. GRB 140930A/MAXI J2259+524: MASTER optical observations
  50. Konus-Wind observation of GRB 140930B
  51. GRB 140930B: Swift-XRT refined Analysis
  52. GRB 140930B: Swift detection of a short burst
  53. Konus-Wind observation of GRB 140928A
  54. GRB 140928A: Swift-XRT observations
  55. GRB 140928A: Fermi-LAT detection
  56. GRB 140927A: Swift-XRT refined Analysis
  57. GRB 140927A: Swift detection of a burst
  58. GRB 140919A: Swift-XRT refined Analysis
  59. GRB 140919A: Swift-XRT observations
  60. GRB 140916A: Swift-XRT refined Analysis
  61. GRB 140916B: iPTF Optical Observations
  62. Konus-Wind observation of GRB 140906C
  63. GRB 140903A: NOT optical and NIR observations
  64. GRB 140903A: FTN observations
  65. GRB 140818B: TShAO optical upper limit
  66. GRB 140903A: Swift-XRT refined Analysis
  67. IPN Triangulation of GRB 140901A (short/hard/very intense)
  68. Konus-Wind observation of GRB 140825A
  69. GRB 140828A: Swift detection of a burst
  70. GRB 140818B: TLS observations
  71. GRB 140824B: Fermi GBM Detection
  72. GRB 140821A: Fermi GBM Detection
  73. Fermi TRIGGER_NUM 430583595: MASTER OT 20 hours later
  74. GRB 140824A: Swift-XRT refined Analysis
  75. GRB 140824A: Swift detection of a burst
  76. GRB 140817A: Khureltogot optical upper limit
  77. GRB140819A: Deep GROND Upper Limits
  78. Fermi trigg_num 430148973: OSN I-band observations
  79. Konus-Wind observation of GRB 140818A
  80. GRB 140818B: OSN I-band afterglow candidate
  81. GRB 140818B: Swift detection of a burst
  82. Konus-Wind observation of GRB 140817A
  83. GRB 140817A: Swift-XRT refined Analysis
  84. GRB 140817A: Swift-BAT refined analysis
  85. GRB 140815A: A long GRB detected by INTEGRAL
  86. GRB 140814A: Swift-XRT and UVOT observations
  87. GRB 140814A: MAXI/GSC detection
  88. Konus-Wind observation of GRB 140810A
  89. GRB140810A: Fermi-LAT detection
  90. GRB 140809A : Virtual Telescope optical observations
  91. Konus-Wind observation of GRB 140808A
  92. Konus-Wind observation of GRB 140801A
  93. Konus-Wind observation of GRB 140729A
  94. GRB 140730A: Swift-XRT refined Analysis
  95. GRB 140730A: Swift detection of a burst
  96. Radio upper limit on the GRB 140713A with the GMRT
  97. Correction to Fermi-LAT GCN Circular 16633
  98. GRB 140729A: Fermi-LAT detection
  99. Trigger 607399: Swift detection of SGR1806-20
  100. GRB 140723A: Swift-XRT and UVOT observations

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