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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"

24571 results found.

  1. GRB 160910A: Global MASTER Net OT detection before LAT alert
  2. Konus-Wind observation of GRB 160910A
  3. GRB 160910A: NOT afterglow confirmation
  4. GRB 160910A: Swift-XRT afterglow detection
  5. GRB 160908A: CALET Gamma-Ray Burst Monitor detection
  6. GRB 160910A: Fermi GBM observation
  7. Konus-Wind observation of GRB 160905A
  8. GRB 160905A: Swift-BAT refined analysis
  9. GRB 160905A: Swift-XRT refined Analysis
  10. GRB 160905A: Fermi-LAT detection
  11. GRB 160905A: Fermi GBM observation
  12. IceCube HESE 160814: MASTER OT J130845.02-323254.9 as the possible source of the high energy neutrino
  13. Search for counterpart to IceCube-160814A with ANTARES
  14. GRB 160824B: Lomonosov BDRG gamma ray detection and MASTER limit
  15. GRB 160829A: Fermi GBM Detection
  16. GRB 160829A: Fermi-LAT detection of a short GRB
  17. GRB 160827A: Swift-BAT refined analysis
  18. GRB 160827A: Swift detection of a burst
  19. Swift Trigger 710022 is very likely noise
  20. GRB 160826A: Swift-BAT refined analysis
  21. GRB 160825A: not localized by Swift
  22. GRB 160820A: Fermi GBM observation
  23. GRB160821A: Astrosat CZTI (veto) detection
  24. GRB 160821A: CALET Gamma-Ray Burst Monitor detection
  25. GRB 160824A: 1.5m OSN I-band observation
  26. GRB 160824A: ISON/Terskol optical observations
  27. GRB 160824A: Swift-BAT refined analysis
  28. GRB 160824B: Fermi GBM detection
  29. IPN Triangulation of GRB 160822A (short/hard)
  30. Konus-Wind observation of GRB 160820A
  31. IPN Triangulation of GRB 160820A (short/hard)
  32. GRB 160822672: Fermi GBM detection
  33. GRB 160821B: Swift-BAT refined analysis
  34. GRB 160821B: Fermi GBM Detection
  35. Konus-Wind observation of GRB 160821A
  36. GRB 160821B: Swift-XRT refined Analysis
  37. GRB 160821A: Swift-BAT refined analysis
  38. Short GRB 160821B: MASTER early optical observations
  39. GRB 160821A: Fermi-LAT refined analysis
  40. GRB 160821A: Fermi GBM Detection
  41. GRB 160821A: Fermi-LAT detection of a bright burst
  42. GRB 160821A: Swift detection of a bright burst
  43. INTEGRAL/SPI-ACS observation of IceCube HESE 128340 58537957
  44. BAT detection and localization of GRB 160819A
  45. GRB 160819A: Fermi GBM detection
  46. IBAS Alert 7534: Not a real GRB
  47. GRB 160816A: MASTER OT early detection on coaded images
  48. GRB 160816A: RATIR Optical and NIR Afterglow Confirmation
  49. Fermi GBM Observations of IceCube-160806A
  50. Konus-Wind observation of GRB 160816A
  51. GRB 160815A: GWAC-F60A upper limit
  52. GRB 160816A: MASTER inspection
  53. GRB 160816730A: Fermi GBM detection/observation
  54. GRB 160816A: Fermi-LAT detection
  55. Konus-Wind observation of GRB 160814A
  56. GRB 160815A: Swift-BAT refined analysis
  57. GRB 160815A: Fermi GBM detection/observation
  58. GRB 160815A: Swift detection of a burst
  59. INTEGRAL/SPI-ACS and IBIS_VETO search for prompt gamma-ray counterpart of IceCube-160806A
  60. GRB 160806A: Fermi GBM observation
  61. IPN Triangulation of GRB 160806A
  62. Swift Trigger 707545 is likely 4U 1850-03/GS1843-02
  63. IceCube-160731A: Konus-Wind limits
  64. GRB 160804A: GROND observations
  65. Search for counterpart to IceCube-160731A with ANTARES
  66. GRB 160804A: TNG optical observations, afterglow fading and candidate host galaxy
  67. GRB 160804A: Fermi GBM observation
  68. GRB160804A: MASTER-SAAO observation
  69. Konus-Wind observation of GRB 160802A
  70. IPN Triangulation of GRB 160802A
  71. GRB 160804A: Swift-BAT refined analysis
  72. GRB 160804A: Swift-XRT refined Analysis
  73. GRB 160804A: Swift detection of a burst
  74. IceCube-160731A: iPTF P48 Observations
  75. GBM Observations of IceCube 160731
  76. GRB 160802A: Fermi GBM detection
  77. FACT follow-up of IceCube20160731
  78. GRB 160801A: Swift-BAT refined analysis
  79. Global MASTER net follow up of IceCube-160731A
  80. GRB 160801A: MITSuME Okayama upper limits
  81. GRB 160801A: Swift detection of a burst
  82. HAWC follow up of IceCube 160731
  83. GRB 160726A, Swift-BAT refined analysis
  84. GRB 160726A: Fermi GBM observation
  85. GRB 160726A: Swift detection of a short burst
  86. GRB 160720A CALET Gamma-Ray Burst Monitor detection
  87. GRB 160720A: Lomonosov BDRG gamma ray detection and MASTER limit
  88. Konus-Wind observation of GRB 160720A
  89. IPN Triangulation of GRB 160720A
  90. GRB 160703, GRB 160705, GRB 160720, SGR1935+2154: First SGRs and GRBs detected by Lomonosov.
  91. GRB 160720A: Fermi GBM detection
  92. GRB 160716A: Swift/UVOT Detection
  93. GRB 160716A: Swift-BAT refined analysis
  94. GRB 160716A: Swift detection of a burst
  95. Swift Trigger 704327: KAIT Optical Observations
  96. GRB 160712A: Swift-BAT refined analysis
  97. GRB 160714A: Swift-XRT observations
  98. GRB 160714A: Fermi GBM observation
  99. GRB 160623A: optical astrometry, photometry, and redshift
  100. GRB 160714A: Swift-BAT refined analysis,

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