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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.

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subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

32551 results found.

  1. AGILE-ACS position for the SGR 1806-20 July 27 burst
  2. GRB 070729: LCO optical imaging
  3. VLA upper limit on short hard burst GRB 070714B
  4. Intense burst from SGR 1806-20 detected on July 27
  5. GRB070729: Swift/UVOT upper limits
  6. GRB 070729: Swift-XRT refined analysis
  7. GRB 070729, Swift-BAT refined analysis
  8. GRB 070729: Magellan NIR Observations
  9. GRB 070724B: P60 Observations
  10. GRB 070724B: Swift/UVOT Upper limits
  11. GRB070721A: Swift/UVOT Detection of a Weak Afterglow
  12. GRB 070724B: Swift-XRT afterglow likely candidate
  13. GRB 070721A: optical observations
  14. GRB 070724A: further VLT observations
  15. GRB 070724B: Suzaku WAM observation of the prompt emission
  16. Konus-Wind observation of GRB 070724B
  17. GRB 070724B: Analysis of AGILE gamma-ray data
  18. GRB 070724B: Swift-XRT afterglow candidates
  19. Four radio sources in Swift-XRT error box of GRB 070724
  20. GRB 070724: optical observations
  21. GRB070724: Host galaxy redshift
  22. GRB 070724: P60 and Gemini Observations
  23. GRB 060814 - Keck host detection and redshift
  24. GRB 070724: Closer association with DSS source
  25. Swift/UVOT refined analysis of GRB070724
  26. GRB 070724: Swift-XRT Team refined analysis
  27. GRB 070724: Pre-Imaging Shows a Source in the XRT Error Circle
  28. Short-Hard GRB070714B: PROMPT Observations
  29. GRB 070724, Swift-BAT refined analysis of a short burst
  30. GRB 070721B: further observations and analysis
  31. GRB 070714B: Keck observations
  32. GRB 070721B: optical observations and proposed redshift
  33. Swift/UVOT observations of GRB070721B optical afterglow.
  34. GRB 070721B, Further Swift-BAT refined analysis
  35. Swift/UVOT Observations of GRB070721A
  36. GRB 070721B : Faulkes Telescope South observations
  37. GRB 070721B: Swift-XRT refined analysis
  38. GRB 070721A : Faulkes Telescope South optical limit
  39. GRB 070721A: Swift/XRT refined analysis
  40. GRB 070721B, Swift-BAT refined analysis
  41. GRB 070721A, Swift-BAT refined analysis
  42. GRB070721B: A bright UVOT candidate
  43. GRB 070721B: Swift detection of a burst
  44. GRB 070721: Swift detection of a possible burst
  45. GRB 070714B: Swift/BAT and Suzaku/WAM joint spectral analysis
  46. GRB 070714B : Suzaku WAM observation of the prompt emission
  47. GRB070714B: TNG NIR observations
  48. Erratum : Suzaku WAM observation of GRB 070704
  49. GRB 070714A: Swift/UVOT Upper limits
  50. GRB 070714B: Swift/UVOT Upper Limits
  51. GRB 070616: No Evidence for I Band Afterglow
  52. GRB 070714A: Swift XRT refined analysis
  53. GRB070714B: Swift-XRT refined analysis
  54. GRB 070707: Swift-XRT follow-up observations
  55. GRB 070714b ("Bastille"): Optical Pre-Imaging (Clarification)
  56. GRB 070714 ("Bastille"): Optical Pre-Imaging
  57. GRB 070714B, Swift-BAT refined analysis of the short hard burst
  58. GRB 070714A, Swift-BAT refined analysis
  59. GRB 070714 : Liverpool Telescope optical counterpart ?
  60. GRB 070704: RTT150 optical observations
  61. GRB 070704: Suzaku/WAM observation of the prompt emission
  62. Konus-Wind observation of GRB 070707
  63. GRB 070707: optical afterglow
  64. GRB 070707: object inside XRT error circle
  65. Swift/UVOT Observations of GRB070707
  66. Swift XRT observation of GRB 070707
  67. GRB 070707: VLT observations
  68. GRB 070429B: NIR Observations
  69. GRB070704: FAVOR optical observations
  70. GRB 070704 : Liverpool Telescope Observations
  71. GRB 070611: VLT observations
  72. VLA detection of GRB 070612A in C Band
  73. Konus-Wind observation of GRB 070626
  74. GRB 070704: Swift-XRT refined analysis
  75. Swift/UVOT Observations of GRB070704
  76. GRB 070704, Swift-BAT refined analysis
  77. GRB 070704: Correction to GCN Circ 6594
  78. GRB 070626: Suzaku/WAM observation of the prompt emission
  79. GRB 070628 Swift-UVOT Refined Analysis
  80. GRB 070628: NIR detection of afterglow
  81. GRB 070628, Swift-BAT refined analysis
  82. GRB 070628: TAROT La Silla observatory optical observations
  83. GRB 070628: Swift XRT refined analysis
  84. GRB 070628: Watcher Observations
  85. GRB 070612A: Allen Telescope Array Observations
  86. INTEGRAL burst GRB070615: X-ray continued observations
  87. GRB 070616 : WIDGET simultaneous optical observations
  88. GRB 070616: Suzaku/WAM observation of the prompt emission
  89. GRB 070612A: Second Epoch WSRT Radio Observations
  90. GRB070621: RTT150 optical observations
  91. GRB 070621: VLT optical observations
  92. GRB 070621: Swift/UVOT Upper Limits
  93. Keck Laser Guide Star Adaptive Optics Imaging of GRB 070621
  94. GRB 070621: Swift-BAT refined analysis
  95. GRB070621: Swift XRT refined analysis
  96. GRB 070621: Gemini South optical imaging
  97. Observations of GRB070612A at Calar Alto
  98. GRB 070621: NOT observations
  99. GRB070621: OPTIMA-Burst optical upper limit
  100. GRB 070621: Watcher Observations

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