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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"

15376 results found.

  1. GRB 111117A: Gemini host observation
  2. GRB111117A: Magellan IMACS observations
  3. GRB111107A: Further ATCA observations - no detection
  4. GRB 111117A: NOT observations
  5. Konus-Wind observation of GRB 111113A
  6. GRB 111109A: Swift/UVOT Photometry
  7. GRB 111107A: Fermi GBM observation
  8. GRB 111107A: VLT/X-shooter spectroscopy
  9. GRB 111107A: GROND observations
  10. Konus-Wind observation of GRB 111103B
  11. GRB 111103B : WIYN 3.5m NIR observations
  12. GRB 111103A: Fermi GBM observation
  13. GRB111103B Swift/UVOT Upper Limits
  14. Trigger 506913: Swift detection of Swift J1922.7-1716 and its optical counterpart
  15. GRB 111103B: Swift detection of a strong burst from a GRB or Galactic source
  16. GRB 111029A: SAO RAS optical limits
  17. GRB 111026A: spectral lag value inconclusive for a short burst
  18. GRB 111029A: PAIRITEL NIR Upper Limits
  19. GRB 111022B: BTA Optical Observations
  20. GRB 111022B: Gemini infrared observations
  21. GRB 111022A: MASTER-Net early limit
  22. GRB 110918A: Optical light curve for days 1.4 to 16.3
  23. Konus-Wind observation of GRB 111016B
  24. GRB 111018A: GROND Upper Limits
  25. GRB111016A : WIYN 3.5m NIR observations
  26. GRB 111008A : miniTAO/ANIR NIR observations
  27. GRB 111008A: Swift/UVOT Upper Limits
  28. Konus-Wind observation of GRB 111008A
  29. GRB 111008A: IAC80 I-band observations
  30. GRB 111008A: NOT optical observation
  31. GRB 111005A: ATCA 18 GHz detection
  32. GRB 111005A: VLT IR observations
  33. GRB 111003A: Fermi GBM detection
  34. GRB 110921A: MITSuME-Akeno Optical photometry
  35. Trigger 504307: Swift detection of MAXI J1836-194
  36. GRB 110825A: GROND Observations
  37. GRB 110928A: Further PAIRITEL NIR Observations
  38. GRB110918A: Lick Observations
  39. GRB 110921A: NOT observations
  40. GRB 110921A: Fermi GBM observation
  41. GRB 110915B : X-ray afterglow confirmation
  42. GRB 110918A: rest-frame energetics in gamma-gays
  43. GRB 110918A optical observation
  44. GRB 110918A: Gemini-N redshift
  45. GRB 110918A: GROND detection of the afterglow candidate
  46. GRB 110918A: INT optical detection of Swift candidate afterglow
  47. Konus-Wind observation of GRB 110918A
  48. GRB110918A: BOOTES-1 optical limit
  49. GRB 110915A: Konus-Wind and Swift/BAT joint spectral analysis
  50. IPN triangulation of GRB 110918A (long duration, extremely intense)
  51. GRB 110915B: GROND Observations of the Optical/NIR Afterglow Candidate
  52. GRB 110915A: Swift/UVOT Upper Limits
  53. GRB 110915A: GROND Upper limits
  54. GRB 110903A: Suzaku WAM observation of the prompt emission
  55. GRB 110915A: Deep Gemini-South i/z-band imaging
  56. GRB 110915A: NOT observations
  57. GRB 110915B: SuperAGILE localization of a long GRB
  58. GRB 110731A: SAO RAS and Terskol observations
  59. GRB 110906A(?): Burst detection (unconfirmed) from Swift-BAT slew data
  60. GRB 110905A / X-ray transient MAXI J1836-194: TNT optical observation
  61. GRB 110905A: Potential BAT trigger on MAXI J1836-194
  62. GRB 110903A: Fermi GBM observation
  63. GRB 110903A: Swift/UVOT Upper Limits
  64. Konus-Wind observation of GRB 110903A
  65. GRB 110903A: a long GRB detected by INTEGRAL
  66. GRB 110825A: Suzaku WAM observation of the prompt emission
  67. GRB 110825A: optical afterglow candidate
  68. IPN triangulation of GRB110825A (very intense, long-duration)
  69. Konus-Wind observation of GRB 110820B
  70. GRB 110820A: i-band finding chart + correction to 12295
  71. GRB 110818A: Fermi GBM observation
  72. GRB 110815A : Suzaku WAM observation of the prompt emission
  73. Konus-Wind observation of GRB 110815A
  74. GRB 110801A: Konus-Wind and Swift/BAT joint spectral analysis
  75. GRB 110812A: SuperAGILE localization of a long GRB.
  76. Konus-Wind observation of GRB 110808B
  77. Konus-Wind observation of GRB 110808A
  78. SGR J1834.9-0846: A Neutron Star in W41?
  79. Swift SGR 1834.9-0846: Swift-BAT refined analysis
  80. GRB 110726A: two epochs of SAO RAS optical observations
  81. Konus-Wind observation of GRB 110802A
  82. IPN triangulation of GRB110802A (short/hard burst)
  83. GRB 110731A : Suzaku WAM observation of the prompt emission
  84. GRB110731A: MOA optical observations of the steeply fading afterglow
  85. GRB 110801A: SAO RAS optical observations
  86. GRB110801A: MITSuME Ishigakijima Optical Observation at 1 day after the burst
  87. GRB 110801A: Afterglow redshift from 10.4m GTC
  88. GRB110801A: MITSuME Ishigakijima Optical Observation
  89. GRB 110801A: TLS Optical afterglow confirmation
  90. GRB110731A: MITSuME Ishigakijima Optical Upper Limits
  91. Konus-Wind observation of GRB 110731A
  92. GRB110731A: Swift/UVOT Observations
  93. GRB 110731A: Fermi GBM observation
  94. Fermi-LAT Detection of GRB110731A
  95. Sw J1644+57 (GRB 110328A): Continued VLBA Observations
  96. GRB 110721A: Swift observations of afterglow candidate
  97. GRB 110726A: ROTSE-III refined analysis, fast decay in early phase
  98. GRB110726A: MITSuME Ishigakijima Optical Observation
  99. GRB 110726A: Swift/UVOT Detection
  100. IPN triangulation of GRB 110721A

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