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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"

36379 results found.

  1. GRB 110715A: Enhanced Swift-XRT position
  2. GRB 110715A: Swift-BAT refined analysis
  3. GRB 110715A: Swift detection of a bright burst with an optical counterpart
  4. GRB 110709B: Swift/UVOT Observations
  5. GRB 110709A / EVLA upper limits
  6. GRB 110709B: Additional Gemini observations and deep limits on an optical afterglow
  7. Swift trigger 457076 is not a GRB
  8. Konus-Wind observation of GRB 110708B
  9. GRB 110709A: Suzaku WAM observation of the prompt emission
  10. GRB 110709B: Submm observations from APEX
  11. IPN triangulation of GRB 110708B (long duration, extremely intense)
  12. Swift Trigger 457076: a possible GRB
  13. GRB 110709A: Swift/UVOT Upper Limits
  14. Fermi Gamma-ray Burst Monitor trigger 332078586 is not a GRB
  15. GRB 110709A: Konkoly observations
  16. GRB 110708A: Konkoly observations
  17. GRB 110709B BAT refined analysis
  18. GRB 110709B: burst detection from Swift-BAT slew data
  19. GRB 110709B: Swift-XRT refined Analysis
  20. GRB 110709A: Swift-XRT refined Analysis
  21. GRB 110709B: Swift/UVOT Detection of Possible Optical Flaring
  22. GRB110709A: MITSuME Ishigakijima Optical upper limits
  23. Konus-Wind observation of GRB 110709A
  24. GRB 110709B: correction to GCN 12135 (Konus-Wind peak flux)
  25. GRB 110709B: Enhanced Swift-XRT position
  26. Konus-Wind observation of GRB 110709B
  27. GRB 110709A: Fermi GBM observation
  28. GRB 110709B: Gemini-South additional analysis and photometry
  29. GRB 110709B : A possible source in USNO B 1.0
  30. GRB 110709B: Preliminary Swift-BAT refined analysis
  31. GRB 110709B: GROND Detection of an Afterglow Candidate
  32. GRB 110709B: Gemini-South optical observations
  33. GRB 110709A: Swift-BAT refined analysis
  34. GRB 110709B: possible quiescent source in DSS
  35. GRB 110709A : Xinglong TNT upper limit
  36. GRB 110709B: Swift detection of renewed activity at T+11 minutes.
  37. GRB 110709A: Enhanced Swift-XRT position
  38. GRB 110709B: Swift detection of a burst
  39. GRB 110708A: Swift/UVOT Observations
  40. GRB 110709A: MASTER-NET optical observations
  41. GRB 110709A: Prompt enhanced Swift-XRT position
  42. GRB 110709A: Swift detection of a burst
  43. GRB 110708A: Liverpool Telescope observations
  44. GRB 110708A: Lick observations
  45. GRB 110708A: Swift/XRT afterglow candidate for the INTEGRAL burst
  46. GRB 110705A: Suzaku WAM observation of the prompt emission
  47. GRB 110625A, the review of the sky area in plate archives
  48. GRB 110708A: a long GRB detected by INTEGRAL
  49. Konus-Wind observation of GRB 110705A
  50. IPN triangulation of short hard GRB 110705A
  51. GRB 110705A: Fermi GBM detection
  52. GRB 110625A: Suzaku WAM observation of the prompt emission
  53. GRB 110625A: Fermi GBM and LAT observations
  54. GRB 110625A: Swift/UVOT Upper Limits
  55. GRB 110625A: 1.23m CAHA I-band observations
  56. GRB 110625A: Fermi LAT detection
  57. GRB 110625A: GROND detection of a source inside the XRT error circle
  58. GRB 110625A: NIR Source
  59. GRB 110625A: Konkoly observations
  60. Konus-Wind observation of GRB 110625A
  61. GRB 110625A: Swift-XRT refined Analysis
  62. GRB 110625A: Swift-BAT refined analysis
  63. GRB 110625A: ROTSE-III Optical Limits
  64. GRB 110625A: Swift detection of a burst
  65. Swift J185003.2-005627: TAROT La Silla observatory optical observations
  66. Swift J185003.2-005627: TAROT Calern observatory optical observations
  67. Swift J185003.2-005627: Swift detection of a burst from a new Galactic transient
  68. GRB 110618A: SMARTS optical observations
  69. GRB 110604A: final update on Swift-XRT observations
  70. Konus-Wind observation of GRB 110618A
  71. IPN triangulation of GRB110618A (long duration, extremely intense)
  72. Fermi Gamma-ray Burst Monitor trigger 110621949 is not a GRB
  73. GRB 110604A: Suzaku WAM observation of the prompt emission
  74. GRB 110610A: Suzaku WAM observation of the prompt emission
  75. GRB 110610A: Fermi GBM detection
  76. GRB 110610A: 1.23m CAHA optical observations
  77. GRB 110610A: Swift-XRT refined Analysis
  78. GRB 110610A: Swift/UVOT Upper Limits
  79. GRB 110610A: Enhanced Swift-XRT position
  80. GRB 110610A: Swift-BAT refined analysis
  81. Swift detection of the X-ray afterglow of GRB 110604A
  82. GRB 110610A: MASTER-NET optical observations
  83. GRB 110610A: Swift detection of a burst
  84. Konus-Wind observation of GRB 110604A
  85. GRB 110604A Detection by IPN Spacecraft and Swift-BAT
  86. GRB 110530A: optical observations in Mondy observatory
  87. GRB 110529A: Suzaku WAM observation of the prompt emission
  88. GMRT detection of GRB 110328A
  89. GRB 110530A: optical observations at Mt. Terskol, second epoch
  90. GRB 110530A: Swift-XRT refined Analysis
  91. GRB 110530A: Swift/UVOT Detection of a Fading Afterglow
  92. GRB 110530A: Xinglong TNT observation
  93. GRB 110530A: Enhanced Swift-XRT position
  94. GRB 110530A: NOT optical observations
  95. GRB110530A: MITSuME Okayama Optical Observation
  96. GRB 110530A: optical observations at Mt. Terskol
  97. GRB 110530A: Correction to GCN Circ 12050
  98. GRB 110530A: MASTER OT observations
  99. GRB 110530A: Swift-BAT refined analysis
  100. GRB 110530A: MITSuME Akeno Optical Observation

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