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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"

37767 results found.

  1. GRB 110709A: Enhanced Swift-XRT position
  2. GRB 110709B: Swift detection of a burst
  3. GRB 110708A: Swift/UVOT Observations
  4. GRB 110709A: MASTER-NET optical observations
  5. GRB 110709A: Prompt enhanced Swift-XRT position
  6. GRB 110709A: Swift detection of a burst
  7. GRB 110708A: Liverpool Telescope observations
  8. GRB 110708A: Lick observations
  9. GRB 110708A: Swift/XRT afterglow candidate for the INTEGRAL burst
  10. GRB 110705A: Suzaku WAM observation of the prompt emission
  11. GRB 110625A, the review of the sky area in plate archives
  12. GRB 110708A: a long GRB detected by INTEGRAL
  13. Konus-Wind observation of GRB 110705A
  14. IPN triangulation of short hard GRB 110705A
  15. GRB 110705A: Fermi GBM detection
  16. GRB 110625A: Suzaku WAM observation of the prompt emission
  17. GRB 110625A: Fermi GBM and LAT observations
  18. GRB 110625A: Swift/UVOT Upper Limits
  19. GRB 110625A: 1.23m CAHA I-band observations
  20. GRB 110625A: Fermi LAT detection
  21. GRB 110625A: GROND detection of a source inside the XRT error circle
  22. GRB 110625A: NIR Source
  23. GRB 110625A: Konkoly observations
  24. Konus-Wind observation of GRB 110625A
  25. GRB 110625A: Swift-XRT refined Analysis
  26. GRB 110625A: Swift-BAT refined analysis
  27. GRB 110625A: ROTSE-III Optical Limits
  28. GRB 110625A: Swift detection of a burst
  29. Swift J185003.2-005627: TAROT La Silla observatory optical observations
  30. Swift J185003.2-005627: TAROT Calern observatory optical observations
  31. Swift J185003.2-005627: Swift detection of a burst from a new Galactic transient
  32. GRB 110618A: SMARTS optical observations
  33. GRB 110604A: final update on Swift-XRT observations
  34. Konus-Wind observation of GRB 110618A
  35. IPN triangulation of GRB110618A (long duration, extremely intense)
  36. Fermi Gamma-ray Burst Monitor trigger 110621949 is not a GRB
  37. GRB 110604A: Suzaku WAM observation of the prompt emission
  38. GRB 110610A: Suzaku WAM observation of the prompt emission
  39. GRB 110610A: Fermi GBM detection
  40. GRB 110610A: 1.23m CAHA optical observations
  41. GRB 110610A: Swift-XRT refined Analysis
  42. GRB 110610A: Swift/UVOT Upper Limits
  43. GRB 110610A: Enhanced Swift-XRT position
  44. GRB 110610A: Swift-BAT refined analysis
  45. Swift detection of the X-ray afterglow of GRB 110604A
  46. GRB 110610A: MASTER-NET optical observations
  47. GRB 110610A: Swift detection of a burst
  48. Konus-Wind observation of GRB 110604A
  49. GRB 110604A Detection by IPN Spacecraft and Swift-BAT
  50. GRB 110530A: optical observations in Mondy observatory
  51. GRB 110529A: Suzaku WAM observation of the prompt emission
  52. GMRT detection of GRB 110328A
  53. GRB 110530A: optical observations at Mt. Terskol, second epoch
  54. GRB 110530A: Swift-XRT refined Analysis
  55. GRB 110530A: Swift/UVOT Detection of a Fading Afterglow
  56. GRB 110530A: Xinglong TNT observation
  57. GRB 110530A: Enhanced Swift-XRT position
  58. GRB 110530A: NOT optical observations
  59. GRB110530A: MITSuME Okayama Optical Observation
  60. GRB 110530A: optical observations at Mt. Terskol
  61. GRB 110530A: Correction to GCN Circ 12050
  62. GRB 110530A: MASTER OT observations
  63. GRB 110530A: Swift-BAT refined analysis
  64. GRB 110530A: MITSuME Akeno Optical Observation
  65. GRB 110529A: Fermi GBM detection
  66. GRB 110530A: Swift detection of a burst with an optical afterglow
  67. Konus-Wind observation of GRB 110529A
  68. LAT Observations of GRB110529A
  69. EVLA afterglow limits on the high z GRB090429B
  70. Fermi Gamma-ray Burst Monitor trigger 328195911 is not a GRB
  71. Swift J1644+57/GRB 110328A, Additional HST Observations
  72. GRB 110521A: MASTER prompt optical limit
  73. GRB 110521A: Swift/UVOT Upper Limits
  74. GRB 110521A: Swift-XRT refined analysis
  75. GRB 110520A: NOT optical follow-ups
  76. GRB 110521A - NOT optical observation
  77. GRB 110521A: Swift-BAT refined analysis
  78. GRB 110521A: Enhanced Swift-XRT position
  79. GRB 110521A: MASTER synchronous and early optical observations limit
  80. Swift/UVOT observations of GRB110520A
  81. GRB 110521A: Swift detection of a burst
  82. GRB 110520A: Swift-BAT refined analysis
  83. GRB 110520A: IAC80 I-band observations
  84. GRB 110520A: Swift-XRT refined Analysis
  85. GRB 110520A: Enhanced Swift-XRT position
  86. GRB 110520A: WHT IR observations
  87. GRB 110520A - NOT optical observation
  88. GRB 110520A: Skynet/DAO optical observations
  89. GRB 110520A: Liverpool Telescope Observations
  90. GRB 110520A: TAROT Calern observatory optical observations
  91. GRB 110520A: MASTER-NET optical observations
  92. GRB 110520A: Swift detection of a burst
  93. Konus-Wind observation of GRB 110518A
  94. IPN localization of bright GRB 110518A
  95. Radio observations of GRB 110428A with the EVLA
  96. GRB 110519A, Swift-BAT refined analysis
  97. GRB 110519A: Swift detection of a burst
  98. GRB 110503A optical observation
  99. GRB 110426A: Fermi GBM detection
  100. GRB 110428A: Fermi-GBM observation

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