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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"

37759 results found.

  1. GRB 110708A: Swift/XRT afterglow candidate for the INTEGRAL burst
  2. GRB 110705A: Suzaku WAM observation of the prompt emission
  3. GRB 110625A, the review of the sky area in plate archives
  4. GRB 110708A: a long GRB detected by INTEGRAL
  5. Konus-Wind observation of GRB 110705A
  6. IPN triangulation of short hard GRB 110705A
  7. GRB 110705A: Fermi GBM detection
  8. GRB 110625A: Suzaku WAM observation of the prompt emission
  9. GRB 110625A: Fermi GBM and LAT observations
  10. GRB 110625A: Swift/UVOT Upper Limits
  11. GRB 110625A: 1.23m CAHA I-band observations
  12. GRB 110625A: Fermi LAT detection
  13. GRB 110625A: GROND detection of a source inside the XRT error circle
  14. GRB 110625A: NIR Source
  15. GRB 110625A: Konkoly observations
  16. Konus-Wind observation of GRB 110625A
  17. GRB 110625A: Swift-XRT refined Analysis
  18. GRB 110625A: Swift-BAT refined analysis
  19. GRB 110625A: ROTSE-III Optical Limits
  20. GRB 110625A: Swift detection of a burst
  21. Swift J185003.2-005627: TAROT La Silla observatory optical observations
  22. Swift J185003.2-005627: TAROT Calern observatory optical observations
  23. Swift J185003.2-005627: Swift detection of a burst from a new Galactic transient
  24. GRB 110618A: SMARTS optical observations
  25. GRB 110604A: final update on Swift-XRT observations
  26. Konus-Wind observation of GRB 110618A
  27. IPN triangulation of GRB110618A (long duration, extremely intense)
  28. Fermi Gamma-ray Burst Monitor trigger 110621949 is not a GRB
  29. GRB 110604A: Suzaku WAM observation of the prompt emission
  30. GRB 110610A: Suzaku WAM observation of the prompt emission
  31. GRB 110610A: Fermi GBM detection
  32. GRB 110610A: 1.23m CAHA optical observations
  33. GRB 110610A: Swift-XRT refined Analysis
  34. GRB 110610A: Swift/UVOT Upper Limits
  35. GRB 110610A: Enhanced Swift-XRT position
  36. GRB 110610A: Swift-BAT refined analysis
  37. Swift detection of the X-ray afterglow of GRB 110604A
  38. GRB 110610A: MASTER-NET optical observations
  39. GRB 110610A: Swift detection of a burst
  40. Konus-Wind observation of GRB 110604A
  41. GRB 110604A Detection by IPN Spacecraft and Swift-BAT
  42. GRB 110530A: optical observations in Mondy observatory
  43. GRB 110529A: Suzaku WAM observation of the prompt emission
  44. GMRT detection of GRB 110328A
  45. GRB 110530A: optical observations at Mt. Terskol, second epoch
  46. GRB 110530A: Swift-XRT refined Analysis
  47. GRB 110530A: Swift/UVOT Detection of a Fading Afterglow
  48. GRB 110530A: Xinglong TNT observation
  49. GRB 110530A: Enhanced Swift-XRT position
  50. GRB 110530A: NOT optical observations
  51. GRB110530A: MITSuME Okayama Optical Observation
  52. GRB 110530A: optical observations at Mt. Terskol
  53. GRB 110530A: Correction to GCN Circ 12050
  54. GRB 110530A: MASTER OT observations
  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. LAT Observations of GRB110529A
  61. EVLA afterglow limits on the high z GRB090429B
  62. Fermi Gamma-ray Burst Monitor trigger 328195911 is not a GRB
  63. Swift J1644+57/GRB 110328A, Additional HST Observations
  64. GRB 110521A: MASTER prompt optical limit
  65. GRB 110521A: Swift/UVOT Upper Limits
  66. GRB 110521A: Swift-XRT refined analysis
  67. GRB 110520A: NOT optical follow-ups
  68. GRB 110521A - NOT optical observation
  69. GRB 110521A: Swift-BAT refined analysis
  70. GRB 110521A: Enhanced Swift-XRT position
  71. GRB 110521A: MASTER synchronous and early optical observations limit
  72. Swift/UVOT observations of GRB110520A
  73. GRB 110521A: Swift detection of a burst
  74. GRB 110520A: Swift-BAT refined analysis
  75. GRB 110520A: IAC80 I-band observations
  76. GRB 110520A: Swift-XRT refined Analysis
  77. GRB 110520A: Enhanced Swift-XRT position
  78. GRB 110520A: WHT IR observations
  79. GRB 110520A - NOT optical observation
  80. GRB 110520A: Skynet/DAO optical observations
  81. GRB 110520A: Liverpool Telescope Observations
  82. GRB 110520A: TAROT Calern observatory optical observations
  83. GRB 110520A: MASTER-NET optical observations
  84. GRB 110520A: Swift detection of a burst
  85. Konus-Wind observation of GRB 110518A
  86. IPN localization of bright GRB 110518A
  87. Radio observations of GRB 110428A with the EVLA
  88. GRB 110519A, Swift-BAT refined analysis
  89. GRB 110519A: Swift detection of a burst
  90. GRB 110503A optical observation
  91. GRB 110426A: Fermi GBM detection
  92. GRB 110428A: Fermi-GBM observation
  93. GRB 110503A: TAROT Calern observatory optical observations
  94. GRB 110503A: Jet Break seen from TLS
  95. GRB 110503A optical observations
  96. Konus-Wind observation of GRB 110503A
  97. GRB 110422A: MASTER first 30 min OT light curve
  98. GRB 110422A: Herschel FIR observation preliminary report
  99. GRB 110503A: optical observation in CrAO
  100. GRB 110503A: R-band Detection

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