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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"

32736 results found.

  1. GRB 110709A: Swift-XRT refined Analysis
  2. GRB110709A: MITSuME Ishigakijima Optical upper limits
  3. Konus-Wind observation of GRB 110709A
  4. GRB 110709B: correction to GCN 12135 (Konus-Wind peak flux)
  5. Konus-Wind observation of GRB 110709B
  6. GRB110709A: upper limits from CAHA 1.23m and OSN 1.5m
  7. GRB 110709A: Fermi GBM observation
  8. GRB 110709B: Gemini-South additional analysis and photometry
  9. GRB 110709B : A possible source in USNO B 1.0
  10. GRB 110709B: Preliminary Swift-BAT refined analysis
  11. GRB 110709B: GROND Detection of an Afterglow Candidate
  12. GRB 110709B: Gemini-South optical observations
  13. GRB 110709A: Swift-BAT refined analysis
  14. GRB 110709B: possible quiescent source in DSS
  15. GRB 110709A : Xinglong TNT upper limit
  16. GRB 110708A: Swift/UVOT Observations
  17. GRB 110709A: MASTER-NET optical observations
  18. GRB 110708A: Liverpool Telescope observations
  19. GRB 110708A: Lick observations
  20. GRB 110708A: Swift/XRT afterglow candidate for the INTEGRAL burst
  21. GRB 110625A, the review of the sky area in plate archives
  22. Konus-Wind observation of GRB 110705A
  23. IPN triangulation of short hard GRB 110705A
  24. SGR 1E 1841-045: Swift-BAT refined analysis
  25. GRB 110625A: Suzaku WAM observation of the prompt emission
  26. Swift J185003.2-005627: 1.23m CAHA and BOOTES-3 observations
  27. GRB 110625A: Fermi GBM and LAT observations
  28. GRB 110625A: 1.23m CAHA I-band observations
  29. GRB 110625A: Fermi LAT detection
  30. GRB 110625A: GROND detection of a source inside the XRT error circle
  31. GRB 110625A: NIR Source
  32. GRB 110625A: Konkoly observations
  33. Konus-Wind observation of GRB 110625A
  34. GRB 110625A: Swift-XRT refined Analysis
  35. GRB 110625A: Swift-BAT refined analysis
  36. Swift J185003.2-005627: NIR Observation
  37. GRB 110625A: ROTSE-III Optical Limits
  38. Swift J185003.2-005627: Swift-XRT/UVOT refined analysis
  39. Swift J185003.2-005627: Swift-BAT refined analysis
  40. SGR 1E 1841-045: Swift-BAT refined analysis
  41. GRB 110618A: SMARTS optical observations
  42. GRB 110604A: final update on Swift-XRT observations
  43. SGR 1E 1841-045: Swift detection of a soft gamma repeater burst
  44. Konus-Wind observation of GRB 110618A
  45. IPN triangulation of GRB110618A (long duration, extremely intense)
  46. GRB 110604A: Suzaku WAM observation of the prompt emission
  47. GRB 110610A: Suzaku WAM observation of the prompt emission
  48. GRB 110610A: Fermi GBM detection
  49. GRB 110610A: 1.23m CAHA optical observations
  50. GRB 110610A: Swift-XRT refined Analysis
  51. GRB 110610A: Swift/UVOT Upper Limits
  52. GRB 110610A: Swift-BAT refined analysis
  53. Swift detection of the X-ray afterglow of GRB 110604A
  54. Konus-Wind observation of GRB 110604A
  55. GRB 110530A: optical observations in Mondy observatory
  56. GRB 110529A: Suzaku WAM observation of the prompt emission
  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: NOT optical observations
  62. GRB 110530A: optical observations at Mt. Terskol
  63. GRB 110530A: Correction to GCN Circ 12050
  64. GRB 110530A: MASTER OT observations
  65. GRB 110530A: Swift-BAT refined analysis
  66. GRB 110529A: Fermi GBM detection
  67. Konus-Wind observation of GRB 110529A
  68. Swift J1644+57/GRB 110328A, Additional HST Observations
  69. GRB 110521A: MASTER prompt optical limit
  70. GRB 110521A: Swift/UVOT Upper Limits
  71. GRB 110521A: Swift-XRT refined analysis
  72. GRB 110520A: NOT optical follow-ups
  73. GRB 110521A - NOT optical observation
  74. GRB 110521A: Swift-BAT refined analysis
  75. GRB 110521A: MASTER synchronous and early optical observations limit
  76. Swift/UVOT observations of GRB110520A
  77. GRB 110520A: Swift-BAT refined analysis
  78. GRB 110520A: IAC80 I-band observations
  79. GRB 110520A: Swift-XRT refined Analysis
  80. GRB 110520A: WHT IR observations
  81. GRB 110520A - NOT optical observation
  82. GRB 110520A: Liverpool Telescope Observations
  83. Konus-Wind observation of GRB 110518A
  84. IPN localization of bright GRB 110518A
  85. Radio observations of GRB 110428A with the EVLA
  86. GRB 110519A, Swift-BAT refined analysis
  87. GRB 110503A optical observation
  88. GRB 110426A: Fermi GBM detection
  89. GRB 110428A: Fermi-GBM observation
  90. GRB 110503A: TAROT Calern observatory optical observations
  91. GRB 110503A: Jet Break seen from TLS
  92. GRB 110503A optical observations
  93. Konus-Wind observation of GRB 110503A
  94. GRB 110422A: MASTER first 30 min OT light curve
  95. GRB 110422A: Herschel FIR observation preliminary report
  96. GRB 110503A: optical observation in CrAO
  97. GRB 110503A: R-band Detection
  98. GRB 110503A: Centimeter observation from EVLA
  99. GRB 110503A: Millimeter observation from SMA
  100. GRB 110503A: SARA-N Observations and Photometric Calibration

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