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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"

36347 results found.

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

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