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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.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

41932 results found.

  1. GRB 160716A: Swift/UVOT Detection
  2. GRB 160714A: Swift/UVOT Upper Limits
  3. GRB 160716A: Swift-BAT refined analysis
  4. GRB 160716A: Swift-XRT refined Analysis
  5. GRB 160716A: Swift detection of a burst
  6. Swift Trigger 704327: KAIT Optical Observations
  7. Swift Trigger 704444 is probably not an astrophysical event.
  8. GRB 160712A: Swift-BAT refined analysis
  9. GRB 160714A: TAROT Calern observatory optical observations
  10. GRB 160714A: Swift-XRT observations
  11. GRB 160623A: afterglow spectroscopy by GTC and independent redshift determination
  12. GRB 160714A: Fermi GBM observation
  13. GRB 160623A: optical astrometry, photometry, and redshift
  14. Swift-BAT trigger 704327 was due to noise
  15. Fermi GBM trigger 490193747/160714539 is not a GRB
  16. GRB 160714A: Swift-BAT refined analysis,
  17. Swift Trigger 704327: MASTER syncronous optical observations
  18. GRB 160714A: MASTER early optical observations
  19. GRB 160712A: Further GROND observations
  20. GRB 160709A CALET Gamma-Ray Burst Monitor detection
  21. Swift Trigger 704327: a possible GRB
  22. GRB 160714A: Optical observations from OSN
  23. GRB 160714A: Swift-XRT observations
  24. GRB 160714A: Swift detection of a short burst
  25. GRB 160712A: Swift/UVOT Upper Limits
  26. GRB 160712A: RATIR Optical and NIR Observations
  27. Konus-Wind observation of GRB 160712A
  28. GRB 160712A: GROND observations
  29. GRB 160712A: Swift-XRT refined Analysis
  30. GRB 160712A: Skynet R-COP observations
  31. GRB 160629A: 15 GHz detections and upper limits from AMI
  32. GRB 160624A: 15 GHz upper limits from AMI
  33. GRB 160712A: Initial Swift/UVOT observations
  34. GRB 160712A: Swift-XRT observations
  35. GRB 160712A: Global MASTER-Net optical observation
  36. GRB 160712A: Swift detection of a burst
  37. GRB 160625B: Global MASTER-Crimea prompt optical emission detection (fwd)
  38. GRB 160709A: MASTER early imaging Swift BAT error box
  39. GRB 160709A, Swift-BAT detection and localization
  40. GRB 160625B: TSHAO optical observations
  41. GRB 160709A: Swift-XRT observations
  42. GRB 160709A: Global MASTER Net Fermi GBM Alerts observations
  43. Konus-Wind observation of GRB 160709A (short/hard)
  44. GRB 160709A: Fermi GBM Observations
  45. GRB 160709A: Fermi-LAT detection
  46. GRB 160709A: Tiled Swift observations
  47. Fermi GBM trigger 489771293/160709649 is not a GRB
  48. GRB 160705B: TAROT Calern observatory optical observations
  49. GRB 160628A CALET Gamma-Ray Burst Monitor detection
  50. GRB 160629A: Mondy optical observations
  51. GRB 160629A: AbAO optical observations
  52. GRB 160703A: Keck-I/LRIS Optical Observations
  53. Konus-Wind observation of GRB 160702A (short/hard)
  54. IPN Triangulation of GRB 160702A (short/hard)
  55. SGR 1935+2154: CALET Gamma-Ray Burst Monitor detections
  56. GRB 160705B: Swift/UVOT Upper Limits
  57. GRB 160705B: RATIR Optical and NIR Observations and Confirmation of the Fading Afterglow
  58. GRB 160705B: Swift-BAT refined analysis
  59. GRB 160623A: Astrosat CZTI detection
  60. GRB 160705B: Swift-XRT refined Analysis
  61. GRB 160705B: LT optical candidate
  62. GRB 160705B: Swift detection of a burst
  63. GRB 160703A: Swift/UVOT Detection
  64. GRB 160703A: Swift-XRT afterglow detection
  65. GRB 160705A/MAXI J0748-149: MAXI/GSC detection
  66. GRB 160703A: MITSuME Ishigakijima Optical Observation
  67. GRB 160703A: MITSuME Akeno Optical Observations
  68. GRB 160625B: RTT150 optical observations
  69. GRB 160703A: Bassano Bresciano Observatory upper limits
  70. Konus-Wind observation of GRB 160703A
  71. GRB 160703A: Swift-BAT refined analysis
  72. GRB 160703A: Zadko observatory - Gingin optical observations
  73. GRB 160629A: AbAO optical observations
  74. GRB 160703A: Swift detection of a burst
  75. GRB 160629A: Swift/UVOT Upper Limits
  76. GRB 160625B: SAO RAS monitoring
  77. GRB 160629A: Swift-XRT afterglow detection
  78. GRB 160625B: LCOGT FTN observations
  79. GRB 160630A: Swift-BAT refined analysis
  80. GRB 160629A: Global MASTER Net Prompt OT observations
  81. GRB 160629A: Swift ToO observations
  82. GRB 160630A: Skynet PROMPT-CTIO observations of the optical afterglow
  83. Konus-Wind observation of GRB 160629A
  84. GRB 160630A: TAROT La Silla observatory optical observations
  85. GRB 160629A: BTA and GTC redshift
  86. GRB 160630A: Swift/UVOT Upper Limits
  87. GRB 160630A: Swift-XRT refined Analysis
  88. GRB 160625A: GROND upper limits
  89. GRB 160629A: Fermi GBM observation
  90. GRB 160630A: REM NIR observations
  91. GRB 160630A: GROND Afterglow Detection
  92. GRB 160630A: Swift detection of a burst
  93. GRB 160629A: SAO RAS independent OT detection
  94. GRB 160629A: TAROT Calern observatory optical detection
  95. GRB 160629A: a long GBB detected by INTEGRAL
  96. GRB 160625B: TSHAO optical observations, correction GCN 19619
  97. GRB 160625B: TSHAO optical observations
  98. Konus-Wind observation of GRB 160620A
  99. GRB 160625B CALET Gamma-Ray Burst Monitor detection
  100. GRB 160625B: SMARTS optical/IR afterglow observations

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