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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"

32568 results found.

  1. GRB 071010B : Early optical brightening detected by TAOS
  2. Swift-XRT improved positions, and new redshift limits.
  3. ESO optical and NIR observations of GRB 080218B
  4. GRB 080204: Suzaku WAM observation of the prompt emission
  5. GRB 080218B, Swift-BAT refined analysis
  6. GRB 080218B: Swift-XRT refined analysis
  7. Swift/UVOT observations of GRB080218B
  8. GRB 080218B: REM NIR early upper limits
  9. GRB 080212: Mount Abu NIR observations
  10. GRB 080218B: GROND upper limits
  11. GRB 080218b, SMARTS optical/IR limits
  12. GRB 080218A, Swift-BAT refined analysis
  13. GRB080218B: Watcher prompt limit
  14. GRB 080211: Suzaku WAM observation of the prompt emission
  15. Swift-XRT and UVOT observations of the IPN burst GRB 080211
  16. GRB 080212: VLT optical rapid decay
  17. GRB 080212: REM refined analysis
  18. Konus-Wind observation of GRB 080211
  19. VLA radio upper limit on GRB 080212
  20. Swift/UVOT refined analysis of GRB080212
  21. GRB 080212, Swift-BAT refined analysis
  22. GRB080212: Optical afterglow candidate observed by MITSuME Telescope
  23. GRB 080212: Gemini-South optical observations
  24. GRB 080212: GROND detects afterglow
  25. GRB 080212: REM NIR afterglow?
  26. GRB 080212: optical observations
  27. GRB 080212: Swift-XRT Team refined analysis
  28. GRB 080210: Keck photometry
  29. VLA non-detection of GRB 080210
  30. GRB 080207: VLT NIR early upper limits
  31. GRB 080210: Swift/UVOT Refined Analysis
  32. GRB 080207: optical observations.
  33. GRB 080210: Hobby-Eberly Telescope Absorption Spectroscopy
  34. GRB 080210, Swift-BAT refined analysis
  35. GRB 080210: Super-LOTIS observations
  36. GRB 080210: Swift-XRT Refined Analysis
  37. GRB 080210: VLT redshift
  38. GRB 080210: Rapid PROMPT Detections
  39. GRB 080210: GOND detection in all bands and redshift upper limit
  40. GRB 080207: GROND upper limits
  41. GRB 080205: GAO 150cm telescope Optical limit
  42. GRB 080207, Swift-BAT refined analysis
  43. GRB 080207: Optical limits from Gemini-South
  44. GRB 080205: RTT150 optical observations
  45. Swift detection of AX J1749.1-2639
  46. GRB 080207: Super-LOTIS observations
  47. GRB 080207, Swift-BAT refined analysis
  48. GRB080207: RTT150 Optical Observations
  49. GRB 080207: REM NIR observations
  50. GRB080207: Swift/UVOT refined analysis
  51. GRB 080207: Swift-XRT Refined Analysis
  52. Konus-Wind observation of GRB 080204
  53. GRB 080205 optical upper limit
  54. GRB 080205: MASTER optical observation
  55. GRB 080205: optical observation
  56. VLA radio upper limit on GRB 080205
  57. INT+WFC R-band observations of GRB 080205
  58. GRB 080205, Swift-BAT refined analysis
  59. GRB 080205: Swift XRT refined analysis
  60. GRB 080205: OA evolution from KAIT observations
  61. GRB 080205: Swift/UVOT observations
  62. Swift-BAT Trigger #302454, correction of GCN notice, update on AX J1749.1-2639
  63. GRB 080130: Swift-BAT refined analysis
  64. GRB 080130: further Swift XRT observations confirm fading source
  65. GRB 080129: Swift/UVOT Refined Upper Limits
  66. Swift/UVOT observations of GRB080130
  67. GRB 080130: REM NIR observations
  68. GRB 080130(?): Swift XRT observation
  69. GRB 080130?: Detection of a possible burst by BATSS
  70. GRB 080129: Optical observations from OSN
  71. GRB 080129: Swift-XRT refined analysis
  72. X-ray transient in NGC 2770: RTT150 optical observations
  73. GRB 080129: KAIT optical limits
  74. GRB 080123: Early afterglow detection with BATSS (BAT Slew Survey)
  75. GRB 080129, Swift-BAT refined analysis
  76. GRB 080129: Gemini-South photometry
  77. GRB 080129: GROND detection in all bands, and fading
  78. GRB 080129: GROND detection of the optical/NIR afterglow, and fading
  79. GRB 080129: Gemini-South Imaging Observations
  80. GRB 080129: Swift XRT position
  81. GRB 080129 (?): UVOT Upper Limits
  82. A new website of high-level data products for Swift GRBs
  83. GRB 080121: Upper limit on X-ray afterglow
  84. GRB 080123 : Suzaku WAM observation of the prompt emission
  85. Swift trigger(=301779) is not a GRB
  86. Transient 080109/SN 2008D: Spectroscopic Evolution
  87. Konus-Wind observation of GRB 080122
  88. GRB 080122 : Suzaku WAM observation of the prompt emission
  89. GRB 080121: Swift/UVOT upper limits
  90. SNe 2008D and 2007uy: Chandra Detections
  91. GRB 080121 position was incorrect
  92. Two non-burst Swift SubThreshold triggers
  93. Transient 080109/SN 2008D: Spectroscopic Evolution and Re-Classification
  94. GRB 080121: Nearby SDSS galaxies
  95. GRB 080123: Swift-XRT refined analysis
  96. GRB 080123: Swift/UVOT refined analysis
  97. X-ray transient in NGC 2770: RTT150 optical observations
  98. GRB 080123, Swift-BAT refined analysis
  99. GRB 080120: GROND confirmation of the optical afterglow
  100. XRF 080109 / SN 2008D: GMRT radio observation at 1280 MHz

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