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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"

24442 results found.

  1. GRB 110915A: GROND Upper limits
  2. GRB 110915A, Swift-BAT refined analysis
  3. GRB 110903A: Suzaku WAM observation of the prompt emission
  4. GRB110915A MITSuME Okayama J-band upper-limit
  5. GRB 110915A: MITSuME Okayama and Ishigakijima Optical upper limits
  6. GRB 110915A: 1.23m CAHA I-band observations
  7. GRB 110915B: SuperAGILE localization of a long GRB
  8. GRB 110915A: MITSuME Akeno Optical upper limits
  9. GRB 110915A: MASTER-Net early limit
  10. GRB 110731A: SAO RAS and Terskol observations
  11. GRB 110906A(?): Burst detection (unconfirmed) from Swift-BAT slew data
  12. MAXI J1836-194 (originally GRB 110905A): Swift-BAT refined analysis
  13. GRB 110905A: Potential BAT trigger on MAXI J1836-194
  14. GRB 110905A: Swift detection of a burst
  15. GRB 110903A: Fermi GBM observation
  16. Konus-Wind observation of GRB 110903A
  17. GRB 110903A: a long GRB detected by INTEGRAL
  18. SGR Swift J1834.9-0846: Correction to the Swift-BAT refined spectral analysis
  19. GRB110825A: Fermi GBM observation
  20. SGR Swift J1834.9-0846: Swift-BAT refined analysis of trigger 501752
  21. Swift detection of an SGR burst from Swift J1834.9-0846
  22. GRB 110825A: Suzaku WAM observation of the prompt emission
  23. GRB110825A: ROTSE early time optical limit
  24. GRB 110827A, Swift-BAT refined analysis
  25. GRB 110827A: Swift detection of a burst
  26. GRB110825A: Swift target of opportunity observation
  27. Swift-BAT refined analysis of SFXT IGR J08408-4503 (trigger 501368)
  28. Swift J1834.9-0846: Precise X-ray Position and the Confirmation of its Spin Period
  29. Konus-Wind observation of GRB 110820B
  30. GRB 110820A: MASTER-NET first hour observations
  31. IPN triangulation of GRB 110820B (very long duration, extremely intense)
  32. GRB 110820A: Position udpate + 2nd epoch data
  33. GRB110820A: MITSuME Ishigakijima Optical Upper Limits
  34. GRB 110820A: Swift-BAT refined analysis
  35. GRB 110820A: MASTER-NET observations
  36. GRB 110820A: Swift detection of a burst
  37. GRB 110818A: Fermi GBM observation
  38. GRB 110818A, Swift-BAT refined analysis
  39. GRB 110815A : Suzaku WAM observation of the prompt emission
  40. Konus-Wind observation of GRB 110815A
  41. IPN triangulation of GRB110815A (long, intense)
  42. GRB 110801A: Konus-Wind and Swift/BAT joint spectral analysis
  43. GRB 110812A: SuperAGILE localization of a long GRB.
  44. SGR 1834.9-0846/ GRB 110807A, I-band observations
  45. IPN triangulation of GRB 110808B (short/hard/intense)
  46. A new photometric resource for GRB observers
  47. RXTE Discovery of the Spin Period of Swift J1834.9-0846
  48. GRB 110808A: Swift-BAT refined analysis
  49. SGR J1834.9-0846: A Neutron Star in W41?
  50. Swift SGR 1834.9-0846: Swift-BAT refined analysis
  51. GRB 110807A: Swift detection of a burst or a posible new SGR
  52. Reprocessed enhanced Swift-XRT positions and GRB products
  53. IPN triangulation of GRB110802A (short/hard burst)
  54. EVLA observation for Fermi burst GRB 110721A
  55. GRB 110731A : Suzaku WAM observation of the prompt emission
  56. GRB 110726A: Swift-XRT refined Analysis
  57. GRB110731A: MOA optical observations of the steeply fading afterglow
  58. GRB110801A: MITSuME Ishigakijima Optical Observation at 1 day after the burst
  59. GRB 110801A: MASTER OT observations
  60. GRB 110801A: Swift-BAT refined analysis
  61. GRB110801A: MITSuME Ishigakijima Optical Observation
  62. GRB 110801A: ROTSE-III Detection of re-brightening from OT
  63. GRB110731A: MITSuME Ishigakijima Optical Upper Limits
  64. Konus-Wind observation of GRB 110731A
  65. GRB 110731A: Fermi GBM observation
  66. Fermi-LAT Detection of GRB110731A
  67. GRB 110731A: Swift-BAT refined analysis
  68. GRB 110731A: FTN+FTS afterglow observations
  69. Sw J1644+57 (GRB 110328A): Continued VLBA Observations
  70. AXP 4U 0142+61: Swift-BAT refined analysis
  71. GRB 110726A: ROTSE-III refined analysis, fast decay in early phase
  72. GRB110726A: MITSuME Ishigakijima Optical Observation
  73. GRB 110726A: Swift-BAT refined analysis
  74. GRB 110726A: Liverpool Telescope observations
  75. GRB 110726: ROTSE-III Detection of Optical Counterpart
  76. Konus-Wind observation of GRB 110721A
  77. GRB 110719A / SMA 345 GHz upper limits
  78. GRB 110721A: Fermi-LAT detection
  79. GRB 110721A: Fermi GBM detection
  80. Recent GCN/Swift-BAT Slew Burst Position notices are due to playback debugging
  81. GRB110715A: spectral lag analysis
  82. GRB 110715A : Suzaku WAM observation of the prompt emission
  83. GRB 110719A: z-band upper limit
  84. Swift J1822.3-1606 : Fermi GBM observation
  85. GRB 110719A: Swift-BAT refined analysis
  86. GRB 110715A optical observations
  87. GRB 110709B : Suzaku WAM observation of the prompt emission
  88. Konus-Wind observation of GRB 110715A
  89. GRB110715A: VLT redshift
  90. GRB 110715A: Swift-BAT refined analysis
  91. Swift J1822.3-1606: A Probable New SGR in Ground Analysis of BAT Data
  92. GRB 110709B: Swift/UVOT Observations
  93. GRB 110709A / EVLA upper limits
  94. Konus-Wind observation of GRB 110708B
  95. GRB 110709A: Suzaku WAM observation of the prompt emission
  96. GRB 110709B: Submm observations from APEX
  97. Swift Trigger 457076: a possible GRB
  98. GRB 110709A: Konkoly observations
  99. GRB 110708A: Konkoly observations
  100. GRB 110709B BAT refined analysis

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