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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"

23685 results found.

  1. GRB 090309, Swift-BAT refined analysis
  2. GRB 090308: GROND observations
  3. GRB 090309: Swift detection of a burst
  4. GRB 090307B: Fermi GBM detection
  5. GRB 090306C: Fermi GBM detection
  6. GRB 090307: GROND Upper Limits
  7. GRB 090306B: GROND Upper Limits
  8. GRB 090305C: Suzaku WAM observation of the prompt emission
  9. GRB 090308: Swift-BAT refined analysis
  10. GRB 090308: Swift detection of a burst
  11. GRB 090307: Swift-BAT refined analysis of trigger 345551
  12. GRB 090306B: Burst detection from Swift-BAT slew data
  13. Swift Trigger 345551 is probably not a GRB
  14. IPN localization of short GRB 090305C
  15. GRB 090306: Swift detection of a possible burst
  16. GRB 090305, Swift-BAT refined analysis
  17. GRB 090227A: Suzaku WAM observation of the prompt emission
  18. GRB 090305: Magellan confirmation of the optical afterglow
  19. GRB 090305: Swift detection of a short burst
  20. GRB 090301A: Suzaku WAM observation of the prompt emission
  21. Konus-RF catches first GRB and SGR bursts
  22. Konus-Wind observation of bright short GRB 090227B
  23. IPN localization of short bright GRB 090227B
  24. Konus-Wind observation of GRB 090301A
  25. GRB 090301A: Swift-BAT refined analysis
  26. GRB 090301: Swift detection of a burst
  27. Ongoing activity of AXP/SGR 1E1547.0-5408
  28. GRB 090219: Fermi GBM detection
  29. Swift Trigger 343319 is not a GRB
  30. GRB 090217: Suzaku WAM observation of the prompt emission
  31. Konus-Wind observation of GRB 090217
  32. IPN localization of GRB 090217
  33. SGR activity seen by BAT during ICSP Ionospheric Events
  34. Detailed lightcurves of ICSP VLF Observation of SGR/AXP 1E1547.0-5408
  35. GRB 090207 - Fermi GBM Observations
  36. GRB 090205: Swift/UVOT Upper Limits
  37. GRB 090205: Swift-XRT refined analysis
  38. GRB 090205: Swift burst of interest
  39. GRB 090205: GROND observations and photometric redshift estimate
  40. GRB 090205: Swift-BAT refined analysis
  41. GRB 090205: Swift detection of a burst
  42. GRB 090131: Suzaku WAM observation of the prompt emission
  43. GRB 090126A: Swift-XRT afterglow confirmation
  44. Konus-Wind observation of GRB 090201
  45. GRB 090201: Swift-BAT refined analysis
  46. GRB090113: MAGIC telescope GeV observation
  47. GRB 090201: Swift detection of a burst
  48. GRB 090126A: Swift/UVOT Upper Limits
  49. Konus-Wind observation of bright burst from AXP/SGR 1E1547.0-5408 on January 29
  50. GRB 090129: Swift-BAT refined analysis
  51. GRB 090129: Swift detection of a burst
  52. Konus-Wind observation of AXP/SGR 1E1547.0-5408 bursting activity
  53. AXP 1E1547.0-5408: RHESSI observations up to 400 keV
  54. GRB 090126A: Swift-XRT Refined Analysis
  55. GRB 090126: SuperAGILE Localization of a Long GRB
  56. Konus-Wind detection of very bright SGR-like burst on January 25, 2009
  57. AXP 1E1547.0-5408: Suzaku WAM detections of the current activity
  58. GRB 090123: Swift-BAT refined analysis
  59. GRB 090123: Swift detection of a burst
  60. AXP 1E1547.0-5408: long bursts with INTEGRAL SPI-ACS
  61. AXP 1E1547.0-5408: Fermi GBM detection of additional bursts
  62. AXP 1E1547.0-5408: INTEGRAL SPI-ACS confirms activity increase
  63. GRB 090117C: Suzaku WAM observation of the prompt emission
  64. Trigger 340734: Swift detection of a possible short burst
  65. AXP 1E1547.0-5408 activity with SGR bursts
  66. GRB 090118: Subaru NIR Observation
  67. GRB 090118: Swift-XRT observations
  68. GRB 090117C - Fermi GRB Detection
  69. GRB 090117 - Fermi GBM Observations
  70. GRB 090117 - SuperAGILE Localization of a long GRB
  71. GRB090102: MAGIC telescope GeV observation
  72. GRB 090112B: Suzaku WAM observation of the prompt emission
  73. GRB 090113: LOAO Detection Limits in R, I, z, Y-band
  74. GRB 090113: Swift-BAT refined analysis
  75. GRB 090112B: Fermi GBM Detection
  76. GRB 090113: Swift detection of a burst
  77. GRB 090112: Fermi GBM detection
  78. GRB 090111, Swift-BAT refined analysis
  79. GRB 090111: Swift detection of a burst
  80. GRB 090107B: Suzaku WAM observation of the prompt emission
  81. GRB 090107B: Swift XRT afterglow confirmation
  82. GRB 090107B: Swift-XRT detection of possible afterglow
  83. GRB 090107B: a long GRB localized by INTEGRAL
  84. Fermi/GBM detection of GRB 081226A
  85. Fermi/GBM detection of GRB 081225
  86. GRB 090107: Swift-BAT refined analysis
  87. GRB 090107: Swift detection of a burst
  88. GRB 081231: Fermi GBM Detection
  89. Swift triggered on the HMXB 1A 1118-61
  90. Konus-Wind observation of GRB 090102
  91. GRB 081229: Fermi GBM detection
  92. GRB 090102: P60 Imaging and P200 Spectroscopy
  93. GRB 090102: GROND observations of the optical afterglow
  94. GRB 090102: Swift-BAT refined analysis
  95. GRB 090102: Swift XRT refined analysis
  96. GRB 090102: TAROT Calern observatory optical light curve
  97. GRB 090102: TAROT Calern observatory optical observations
  98. GRB 081230: GROND confirmation of the afterglow
  99. GRB 081230, Swift-BAT refined analysis
  100. GRB 081228, Swift-BAT refined analysis

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