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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"

23719 results found.

  1. MAXI/GSC detection of a short soft X-ray transient
  2. GRB 110915A: Konus-Wind and Swift/BAT joint spectral analysis
  3. IPN triangulation of GRB 110918A (long duration, extremely intense)
  4. GRB 110915B: GROND Observations of the Optical/NIR Afterglow Candidate
  5. GRB 110915A, Swift-BAT refined analysis
  6. GRB 110915A: Deep Near-IR Limits from Magellan
  7. GRB 110903A: Suzaku WAM observation of the prompt emission
  8. GRB110915A MITSuME Okayama J-band upper-limit
  9. GRB 110915A: MITSuME Okayama and Ishigakijima Optical upper limits
  10. GRB 110915B: SuperAGILE localization of a long GRB
  11. GRB 110915A: GMG optical upper limit
  12. GRB 110915A: MITSuME Akeno Optical upper limits
  13. GRB 110915A: MASTER-Net early limit
  14. GRB 110915A: Swift detection of a burst
  15. GRB 110825A: Further Swift/XRT Observations
  16. GRB 110731A: SAO RAS and Terskol observations
  17. MAXI J1836-194 (originally GRB 110905A): Swift-BAT refined analysis
  18. GRB 110905A / X-ray transient MAXI J1836-194: TNT optical observation
  19. GRB 110905A: KAIT observations
  20. Konus-Wind observation of GRB 110903A
  21. Trigger 502024: Swift detection of KS 1741-293
  22. SGR Swift J1834.9-0846: Swift-BAT refined analysis of trigger 501752
  23. Swift detection of an SGR burst from Swift J1834.9-0846
  24. GRB 110825A: Suzaku WAM observation of the prompt emission
  25. GRB 110825A: GMG optical observation
  26. GRB 110827A, Swift-BAT refined analysis
  27. GRB 110827A: Swift detection of a burst
  28. IPN triangulation of GRB110825A (very intense, long-duration)
  29. GRB 110820A, the review of the sky area in plate archives
  30. Swift-BAT Trigger 501485 is noise
  31. Swift-BAT refined analysis of SFXT IGR J08408-4503 (trigger 501368)
  32. Konus-Wind observation of GRB 110820B
  33. GRB 110820A: MASTER-NET first hour observations
  34. IPN triangulation of GRB 110820B (very long duration, extremely intense)
  35. GRB110820A: MITSuME Ishigakijima Optical Upper Limits
  36. GRB 110820A: Swift-BAT refined analysis
  37. GRB 110820A: MASTER-NET observations
  38. GRB 110820A: Swift detection of a burst
  39. GRB 110818A: Fermi GBM observation
  40. GRB 110818A: Optical afterglow and redshift from VLT/X-shooter
  41. GRB 110818A, Swift-BAT refined analysis
  42. GRB 110815A : Suzaku WAM observation of the prompt emission
  43. GRB 110818A: Swift detection of a burst
  44. Konus-Wind observation of GRB 110815A
  45. IPN triangulation of GRB110815A (long, intense)
  46. GRB 110801A: Konus-Wind and Swift/BAT joint spectral analysis
  47. GRB 110801A: optical observations at Mt. Terskol observatory
  48. GRB 110812A: SuperAGILE localization of a long GRB.
  49. Konus-Wind observation of GRB 110808B
  50. Konus-Wind observation of GRB 110808A
  51. IPN triangulation of GRB 110808B (short/hard/intense)
  52. Swift Trigger 458942 is probably not a burst
  53. GRB 110808A: Swift-BAT refined analysis
  54. Swift SGR 1834.9-0846: Swift-BAT refined analysis
  55. GRB 110808A: Swift detection of a burst with optical counterpart
  56. GRB 110807A: SAO RAS observations
  57. GRB 110807A: Swift detection of a burst or a posible new SGR
  58. Fermi Gamma-ray Burst Monitor trigger 110806.263 is not a GRB
  59. GRB 110726A: two epochs of SAO RAS optical observations
  60. Konus-Wind observation of GRB 110802A
  61. IPN triangulation of GRB110802A (short/hard burst)
  62. GRB 110731A : Suzaku WAM observation of the prompt emission
  63. GRB 110801A: SAO RAS optical observations
  64. GRB110801A: MITSuME Ishigakijima Optical Observation at 1 day after the burst
  65. GRB 110801A: Evidence for a jet break
  66. GRB 110801A: MASTER OT observations
  67. GRB 110801A: Swift-BAT refined analysis
  68. Swift/UVOT observations of GRB110801A
  69. GRB 110801A: Swift-XRT refined Analysis
  70. GRB110801A: MITSuME Ishigakijima Optical Observation
  71. GRB 110801A: TLS Optical afterglow confirmation
  72. GRB 110801A: Swift detection of a burst with an optical counterpart
  73. GRB110731A: MITSuME Ishigakijima Optical Upper Limits
  74. GRB 110731A: Swift-XRT refined Analysis
  75. Konus-Wind observation of GRB 110731A
  76. GRB 110731A: Fermi GBM observation
  77. GRB 110731A: NOT photometry
  78. GRB 110731A: Swift-BAT refined analysis
  79. GRB 110731A: Swift detection of a burst with an optical counterpart
  80. AXP 4U 0142+61: Swift-BAT refined analysis
  81. Swift detection of a SGR-like burst from the AXP 4U 0142+61
  82. GRB110726A: MITSuME Ishigakijima Optical Observation
  83. GRB 110726A: Swift-BAT refined analysis
  84. GRB 110726A: Liverpool Telescope observations
  85. GRB 110726A: Swift detection of a burst
  86. IPN triangulation of GRB 110721A
  87. GRB 110721A: Gemini-South spectroscopy of the potential optical counterpart
  88. GRB 110721A: potential counterpart candidate
  89. Konus-Wind observation of GRB 110721A
  90. GRB 110715A : Suzaku WAM observation of the prompt emission
  91. Swift/UVOT observations of GRB110719A
  92. GRB 110719A: optical upper limit
  93. GRB 110719A: Swift-BAT refined analysis
  94. GRB 110715A optical observations
  95. GRB 110719A: Swift detection of a burst
  96. GRB 110709B : Suzaku WAM observation of the prompt emission
  97. GRB110715A: GROND Detection of the Optical/NIR Afterglow
  98. GRB 110715A: APEX detection of the submm counterpart
  99. Konus-Wind observation of GRB 110715A
  100. GRB 110715A: Swift-BAT refined analysis

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