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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"

15378 results found.

  1. GRB 110726A: Swift/UVOT Detection
  2. IPN triangulation of GRB 110721A
  3. GRB 110721A: potential counterpart candidate
  4. Konus-Wind observation of GRB 110721A
  5. GRB 110721A: Fermi-LAT detection
  6. GRB110715A: spectral lag analysis
  7. GRB 110715A : Suzaku WAM observation of the prompt emission
  8. GRB 110715A optical observations
  9. GRB 110709B : Suzaku WAM observation of the prompt emission
  10. GRB110715A: GROND Detection of the Optical/NIR Afterglow
  11. Konus-Wind observation of GRB 110715A
  12. GRB 110709B: Additional Gemini observations and deep limits on an optical afterglow
  13. Swift trigger 457076 is not a GRB
  14. Konus-Wind observation of GRB 110708B
  15. GRB 110709A: Suzaku WAM observation of the prompt emission
  16. GRB 110709B BAT refined analysis
  17. GRB 110709B: burst detection from Swift-BAT slew data
  18. GRB 110709B: Swift/UVOT Detection of Possible Optical Flaring
  19. Konus-Wind observation of GRB 110709A
  20. GRB 110709B: correction to GCN 12135 (Konus-Wind peak flux)
  21. Konus-Wind observation of GRB 110709B
  22. GRB 110709A: Fermi GBM observation
  23. GRB 110709B : A possible source in USNO B 1.0
  24. GRB 110709B: GROND Detection of an Afterglow Candidate
  25. GRB 110709B: Gemini-South optical observations
  26. GRB 110709B: possible quiescent source in DSS
  27. GRB 110709B: Swift detection of renewed activity at T+11 minutes.
  28. GRB 110708A: Swift/XRT afterglow candidate for the INTEGRAL burst
  29. GRB 110705A: Suzaku WAM observation of the prompt emission
  30. Konus-Wind observation of GRB 110705A
  31. GRB 110625A: Suzaku WAM observation of the prompt emission
  32. Swift J185003.2-005627: 1.23m CAHA and BOOTES-3 observations
  33. GRB 110625A: Fermi GBM and LAT observations
  34. GRB 110625A: Swift/UVOT Upper Limits
  35. GRB 110625A: 1.23m CAHA I-band observations
  36. GRB 110625A: GROND detection of a source inside the XRT error circle
  37. Konus-Wind observation of GRB 110625A
  38. Swift J185003.2-005627: NIR Observation
  39. Swift J185003.2-005627: Swift-XRT/UVOT refined analysis
  40. Swift J185003.2-005627: Swift-BAT refined analysis
  41. Swift J185003.2-005627: TAROT La Silla observatory optical observations
  42. Swift J185003.2-005627: TAROT Calern observatory optical observations
  43. Konus-Wind observation of GRB 110618A
  44. GRB 110604A: Suzaku WAM observation of the prompt emission
  45. GRB 110610A: Suzaku WAM observation of the prompt emission
  46. GRB 110610A: Fermi GBM detection
  47. Konus-Wind observation of GRB 110604A
  48. GRB 110530A: optical observations in Mondy observatory
  49. GRB 110529A: Suzaku WAM observation of the prompt emission
  50. GRB 110530A: NOT optical observations
  51. GRB110530A: MITSuME Okayama Optical Observation
  52. Konus-Wind observation of GRB 110529A
  53. LAT Observations of GRB110529A
  54. EVLA afterglow limits on the high z GRB090429B
  55. GRB 110520A - NOT optical observation
  56. GRB 110520A: MASTER-NET optical observations
  57. Konus-Wind observation of GRB 110518A
  58. IPN localization of bright GRB 110518A
  59. GRB 110503A optical observation
  60. GRB 110426A: Fermi GBM detection
  61. GRB 110503A: Jet Break seen from TLS
  62. GRB 110503A optical observations
  63. Konus-Wind observation of GRB 110503A
  64. GRB 110503A: R-band Detection
  65. GRB 110503A: Swift/UVOT Observations
  66. GRB 110503A: PAIRITEL NIR Detection
  67. GRB 110503A: redshift confirmation from TNG
  68. GRB 110503A: Redshift from 10.4m GTC
  69. GRB 110426A: Swift/XRT non-detection
  70. GRB 110428A : X-ray afterglow confirmation
  71. GRB 110428A: Suzaku WAM observation of the prompt emission
  72. Konus-Wind observation of GRB 110428A
  73. GRB 110428A: Fermi-LAT Detection
  74. GRB 110422A: Suzaku WAM observation of the prompt emission
  75. GRB110422A: MITSuME Ishigakijima Optical Observation
  76. Konus-Wind observation of GRB 110422A
  77. GRB 110422A: CQUEAN griz Observation
  78. GRB 110422A: TNG optical observations
  79. GRB 110422A: NOT optical observation
  80. GRB110420A: GROND detection of the Optical/NIR Afterglow Candidate
  81. GRB 110420B: Swift-XRT afterglow candidate retraction
  82. GRB 110420B: Fermi GBM observation
  83. Konus-Wind observation of GRB 110420A
  84. GRB 110414A: GROND upper limits
  85. GRB 110414A : Faulkes Telescope North observations
  86. GRB 110411A: PAIRITEL NIR Upper Limits
  87. GRB 110412A: Fermi GBM observation
  88. GRB 110407A:VLF observations on 20.27kHz
  89. GRB 110406A: Positional coincidence with NGC 404
  90. GRB110407A: UVOT Upper Limits
  91. GRB 110407A: GROND Detection of the Optical Afterglow
  92. GRB 110407A: MITSuME Okayama and Ishigakijima Optical upper limits
  93. GRB 100407A : Errata of afterglow position in GCN 11899
  94. GRB 110407A : Lulin optical afterglow detection
  95. Konus-Wind observation of GRB 110406A
  96. GRB 110328A/Swift J164449.3+573451: BAT recent rate increase and pre-outburst,light curve
  97. GRB 110406A: An exceptionally bright burst detected by INTEGRAL SPI-ACS
  98. GRB 110402A: Suzaku WAM observation of the prompt emission
  99. GRB 110328/Swift J164449.3+573451: Chandra observations
  100. GRB 110402A: LOAO Optical Observation

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