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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"

23707 results found.

  1. Konus-Wind observation of GRB 110709A
  2. GRB 110709B: correction to GCN 12135 (Konus-Wind peak flux)
  3. Konus-Wind observation of GRB 110709B
  4. GRB110709A: upper limits from CAHA 1.23m and OSN 1.5m
  5. GRB 110709A: Fermi GBM observation
  6. GRB 110709B: Preliminary Swift-BAT refined analysis
  7. GRB 110709B: GROND Detection of an Afterglow Candidate
  8. GRB 110709B: Gemini-South optical observations
  9. GRB 110709A: Swift-BAT refined analysis
  10. GRB 110709A : Xinglong TNT upper limit
  11. GRB 110709B: Swift detection of renewed activity at T+11 minutes.
  12. GRB 110709B: Swift detection of a burst
  13. GRB 110709A: MASTER-NET optical observations
  14. GRB 110709A: Swift detection of a burst
  15. GRB 110708A: Liverpool Telescope observations
  16. GRB 110708A: Lick observations
  17. GRB 110705A: Suzaku WAM observation of the prompt emission
  18. GRB 110625A, the review of the sky area in plate archives
  19. GRB 110708A: a long GRB detected by INTEGRAL
  20. Konus-Wind observation of GRB 110705A
  21. IPN triangulation of short hard GRB 110705A
  22. Swift trigger 456780 is not a burst
  23. Swift Trigger 456659 is probably not astrophysical
  24. Swift-BAT trigger 456532 is not astrophysical
  25. SGR 1E 1841-045: Swift-BAT refined analysis
  26. SGR 1E 1841-045: Swift detection of a soft gamma repeater burst
  27. GRB 110625A: Suzaku WAM observation of the prompt emission
  28. Swift J185003.2-005627: 1.23m CAHA and BOOTES-3 observations
  29. GRB 110625A: 1.23m CAHA I-band observations
  30. GRB 110625A: GROND detection of a source inside the XRT error circle
  31. Konus-Wind observation of GRB 110625A
  32. GRB 110625A: Swift-BAT refined analysis
  33. GRB 110625A: Swift detection of a burst
  34. Swift J185003.2-005627: Swift-BAT refined analysis
  35. Swift J185003.2-005627: TAROT La Silla observatory optical observations
  36. Swift J185003.2-005627: TAROT Calern observatory optical observations
  37. Swift J185003.2-005627: Swift detection of a burst from a new Galactic transient
  38. SGR 1E 1841-045: Swift-BAT refined analysis
  39. GRB 110618A: SMARTS optical observations
  40. SGR 1E 1841-045: Swift detection of a soft gamma repeater burst
  41. Konus-Wind observation of GRB 110618A
  42. IPN triangulation of GRB110618A (long duration, extremely intense)
  43. GRB 110604A: Suzaku WAM observation of the prompt emission
  44. GRB 110610A: Suzaku WAM observation of the prompt emission
  45. GRB 110610A: Swift-BAT refined analysis
  46. Swift detection of the X-ray afterglow of GRB 110604A
  47. GRB 110610A: MASTER-NET optical observations
  48. GRB 110610A: Swift detection of a burst
  49. Konus-Wind observation of GRB 110604A
  50. GRB 110604A Detection by IPN Spacecraft and Swift-BAT
  51. GRB 110529A: Suzaku WAM observation of the prompt emission
  52. GRB 110530A: optical observations at Mt. Terskol, second epoch
  53. GRB110530A: MITSuME Okayama Optical Observation
  54. GRB 110530A: optical observations at Mt. Terskol
  55. GRB 110530A: Swift-BAT refined analysis
  56. GRB 110530A: MITSuME Akeno Optical Observation
  57. GRB 110529A: Fermi GBM detection
  58. GRB 110530A: Swift detection of a burst with an optical afterglow
  59. Konus-Wind observation of GRB 110529A
  60. GRB 110521A: Swift-XRT refined analysis
  61. GRB 110521A: Swift-BAT refined analysis
  62. Swift/UVOT observations of GRB110520A
  63. GRB 110521A: Swift detection of a burst
  64. GRB 110520A: Swift-BAT refined analysis
  65. GRB 110520A: Swift-XRT refined Analysis
  66. GRB 110520A - NOT optical observation
  67. GRB 110520A: Skynet/DAO optical observations
  68. GRB 110520A: Liverpool Telescope Observations
  69. GRB 110520A: TAROT Calern observatory optical observations
  70. GRB 110520A: Swift detection of a burst
  71. Konus-Wind observation of GRB 110518A
  72. IPN localization of bright GRB 110518A
  73. GRB 110519A, Swift-BAT refined analysis
  74. GRB 110519A: Swift detection of a burst
  75. GRB 110426A: Fermi GBM detection
  76. GRB 110503A: TAROT Calern observatory optical observations
  77. GRB 110503A: Jet Break seen from TLS
  78. GRB 110503A optical observations
  79. Konus-Wind observation of GRB 110503A
  80. GRB 110422A: MASTER first 30 min OT light curve
  81. GRB 110503A: R-band Detection
  82. GRB 110503A: SARA-N Observations and Photometric Calibration
  83. GRB 110503A: Swift/UVOT Observations
  84. GRB 110503A: Swift-XRT refined Analysis
  85. GRB 110503A: redshift confirmation from TNG
  86. GRB 110503A - TLS Afterglow Observations
  87. GRB 110503A: Swift-BAT refined analysis
  88. GRB 110503A: Swift detection of a burst with a bright optical counterpart
  89. GRB 110428A : X-ray afterglow confirmation
  90. GRB 110428A: Suzaku WAM observation of the prompt emission
  91. GRB 110428A : Swift-XRT observations
  92. Konus-Wind observation of GRB 110428A
  93. GRB 110426A: MASTER synchronous with MAXI/GSC observations
  94. GRB 110426A: MAXI/GSC detection of a GRB
  95. GRB 110422A: tentative redshift from TNG
  96. GRB 110422A: Suzaku WAM observation of the prompt emission
  97. GRB 110422A: Herschel observation scheduled
  98. GRB110422A: MITSuME Ishigakijima Optical Observation
  99. Konus-Wind observation of GRB 110422A
  100. GRB 110422A: Further NOT observation

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