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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"

24439 results found.

  1. GRB 110709B: Swift/UVOT Detection of Possible Optical Flaring
  2. GRB110709A: MITSuME Ishigakijima Optical upper limits
  3. Konus-Wind observation of GRB 110709A
  4. Konus-Wind observation of GRB 110709B
  5. GRB 110709A: Fermi GBM observation
  6. GRB 110709B: Preliminary Swift-BAT refined analysis
  7. GRB 110709B: GROND Detection of an Afterglow Candidate
  8. GRB 110709A: Swift-BAT refined analysis
  9. GRB 110709A : Xinglong TNT upper limit
  10. GRB 110709B: Swift detection of renewed activity at T+11 minutes.
  11. GRB 110709A: MASTER-NET optical observations
  12. GRB 110708A: Liverpool Telescope observations
  13. GRB 110708A: Lick observations
  14. GRB 110705A: Suzaku WAM observation of the prompt emission
  15. GRB 110708A: a long GRB detected by INTEGRAL
  16. Konus-Wind observation of GRB 110705A
  17. GRB 110705A: Fermi GBM detection
  18. Swift Trigger 456659 is probably not astrophysical
  19. Swift-BAT trigger 456532 is not astrophysical
  20. SGR 1E 1841-045: Swift-BAT refined analysis
  21. GRB 110625A: Suzaku WAM observation of the prompt emission
  22. GRB 110625A: Fermi GBM and LAT observations
  23. GRB 110625A: Konkoly observations
  24. Konus-Wind observation of GRB 110625A
  25. GRB 110625A: Swift-XRT refined Analysis
  26. GRB 110625A: Swift-BAT refined analysis
  27. Swift J185003.2-005627: NIR Observation
  28. GRB 110625A: ROTSE-III Optical Limits
  29. Swift J185003.2-005627: Swift-BAT refined analysis
  30. Swift J185003.2-005627: Swift detection of a burst from a new Galactic transient
  31. SGR 1E 1841-045: Swift-BAT refined analysis
  32. Konus-Wind observation of GRB 110618A
  33. IPN triangulation of GRB110618A (long duration, extremely intense)
  34. GRB 110604A: Suzaku WAM observation of the prompt emission
  35. GRB 110610A: Suzaku WAM observation of the prompt emission
  36. GRB 110610A: Fermi GBM detection
  37. GRB 110610A: Swift-BAT refined analysis
  38. GRB 110610A: MASTER-NET optical observations
  39. Konus-Wind observation of GRB 110604A
  40. GRB 110530A: optical observations in Mondy observatory
  41. GRB 110529A: Suzaku WAM observation of the prompt emission
  42. GRB 110530A: Xinglong TNT observation
  43. GRB110530A: MITSuME Okayama Optical Observation
  44. GRB 110530A: optical observations at Mt. Terskol
  45. GRB 110530A: MASTER OT observations
  46. GRB 110530A: Swift-BAT refined analysis
  47. GRB 110530A: MITSuME Akeno Optical Observation
  48. GRB 110529A: Fermi GBM detection
  49. GRB 110530A: Swift detection of a burst with an optical afterglow
  50. Konus-Wind observation of GRB 110529A
  51. LAT Observations of GRB110529A
  52. GRB 110521A - NOT optical observation
  53. GRB 110521A: Swift-BAT refined analysis
  54. GRB 110521A: MASTER synchronous and early optical observations limit
  55. GRB 110520A: Swift-BAT refined analysis
  56. GRB 110520A: WHT IR observations
  57. GRB 110520A - NOT optical observation
  58. GRB 110520A: Skynet/DAO optical observations
  59. GRB 110520A: Liverpool Telescope Observations
  60. GRB 110520A: MASTER-NET optical observations
  61. Konus-Wind observation of GRB 110518A
  62. IPN localization of bright GRB 110518A
  63. GRB 110519A, Swift-BAT refined analysis
  64. GRB 110519A: Swift detection of a burst
  65. GRB 110426A: Fermi GBM detection
  66. GRB 110428A: Fermi-GBM observation
  67. GRB 110503A: Jet Break seen from TLS
  68. GRB 110503A optical observations
  69. Konus-Wind observation of GRB 110503A
  70. GRB 110422A: MASTER first 30 min OT light curve
  71. GRB 110422A: Herschel FIR observation preliminary report
  72. GRB 110503A: R-band Detection
  73. GRB 110503A: SARA-N Observations and Photometric Calibration
  74. GRB 110503A: PAIRITEL NIR Detection
  75. GRB 110503A: redshift confirmation from TNG
  76. GRB 110503A: Swift-BAT refined analysis
  77. GRB 110428A: Suzaku WAM observation of the prompt emission
  78. Fermi-GBM data processing and delivery
  79. GRB 110422A: Update of Herschel FIR observation schedule
  80. Konus-Wind observation of GRB 110428A
  81. GRB 110428A: Fermi-LAT Detection
  82. GRB 110426A: MASTER synchronous with MAXI/GSC observations
  83. GRB 110422A: Suzaku WAM observation of the prompt emission
  84. GRB 110422A: Herschel observation scheduled
  85. GRB110422A: NOT optical follow-ups
  86. GRB110422A: MITSuME Ishigakijima Optical Observation
  87. Konus-Wind observation of GRB 110422A
  88. GRB 110422A: Further NOT observation
  89. GRB 110422A: THO optical observations
  90. GRB 110422A: NOT optical observation
  91. GRB 110422A: MASTER earlier OT polarization observations
  92. GRB 110422A: Swift-BAT refined analysis
  93. GRB 110420B: Fermi GBM observation
  94. Konus-Wind observation of GRB 110420A
  95. GRB 110420B: Swift-XRT afterglow candidate
  96. GRB 110420B: Swift-BAT refined analysis
  97. GRB 110420A: Swift-BAT refined analysis
  98. GRB 110420B: Swift detection of a short hard burst
  99. GRB 110420A: Swift detection of a burst with optical counterpart
  100. GRB110414A: MITSuME Ishigakijima Optical upper limits

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