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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"

38673 results found.

  1. GRB 070802: GROND J band candidate
  2. GRB 070802: Swift detection of a burst
  3. Konus-A observation of GRB 070729
  4. Swift/UVOT detection of GRB070714B
  5. AGILE-ACS position for the SGR 1806-20 July 27 burst
  6. GRB 070729: LCO optical imaging
  7. VLA upper limit on short hard burst GRB 070714B
  8. Intense burst from SGR 1806-20 detected on July 27
  9. GRB070729: Swift/UVOT upper limits
  10. GRB 070729: Swift-XRT refined analysis
  11. GRB 070729: Magellan NIR Observations
  12. GRB 070724B: P60 Observations
  13. GRB 070729: Swift detection of a short hard burst
  14. GRB 070724B: Swift/UVOT Upper limits
  15. GRB070721A: Swift/UVOT Detection of a Weak Afterglow
  16. GRB 070724B: Swift-XRT afterglow likely candidate
  17. GRB 070721A: optical observations
  18. GRB 070724A: further VLT observations
  19. GRB 070724B: Suzaku WAM observation of the prompt emission
  20. Konus-Wind observation of GRB 070724B
  21. GRB 070724B: Analysis of AGILE gamma-ray data
  22. GRB 070724B: Swift-XRT afterglow candidates
  23. GRB 070724b: First Gamma Ray Burst Localization by SuperAGILE onboard
  24. Four radio sources in Swift-XRT error box of GRB 070724
  25. GRB 070724: optical observations
  26. GRB070724: Host galaxy redshift
  27. GRB 070724: P60 and Gemini Observations
  28. GRB 060814 - Keck host detection and redshift
  29. GRB 070724: IR observations
  30. Swift/UVOT refined analysis of GRB070724
  31. GRB 070724: Swift-XRT Team refined analysis
  32. GRB 070721B: further observations and analysis
  33. GRB 070724: Swift detection of a burst
  34. GRB 070326: Detection of first burst from BAT Slew Survey (BATSS)
  35. GRB 070714B: Keck observations
  36. GRB 070721B: optical observations and proposed redshift
  37. Swift/UVOT observations of GRB070721B optical afterglow.
  38. GRB 070721B, Further Swift-BAT refined analysis
  39. Swift/UVOT Observations of GRB070721A
  40. GRB 070721B : Faulkes Telescope South observations
  41. GRB 070721B: Swift-XRT refined analysis
  42. GRB 070721A : Faulkes Telescope South optical limit
  43. GRB 070721A: Swift/XRT refined analysis
  44. GRB070721B: A bright UVOT candidate
  45. GRB 070721B: Swift detection of a burst
  46. GRB 070721: Swift detection of a possible burst
  47. GRB 070714B: Swift/BAT and Suzaku/WAM joint spectral analysis
  48. GRB 070714B : Suzaku WAM observation of the prompt emission
  49. GRB 070714A: Swift-BAT T_zero
  50. GRB070714B: TNG NIR observations
  51. GRB 070714A: Swift/UVOT Upper limits
  52. GRB 070714B: Swift/UVOT Upper Limits
  53. GRB 070714B: Swift-BAT spectral lag for the SHB
  54. GRB 070714B: confirmation of optical afterglow
  55. GRB 070616: No Evidence for I Band Afterglow
  56. GRB 070714A: Swift XRT refined analysis
  57. GRB070714B: Swift-XRT refined analysis
  58. GRB 070707: Swift-XRT follow-up observations
  59. GRB 070714 : Liverpool Telescope optical counterpart ?
  60. GRB 070714: Swift detection of a bright burst, possibly short
  61. Swift detection of a possible burst (Trigger 284850)
  62. SN 2007bg - off-axis GRB?
  63. Konus-Wind observation of GRB 070707
  64. Updated Swift/UVOT calibration
  65. GRB 070707: optical afterglow
  66. GRB 070707: object inside XRT error circle
  67. Swift/UVOT Observations of GRB070707
  68. Swift XRT observation of GRB 070707
  69. GRB 070707: VLT observations
  70. INTEGRAL GRB 070707 is a short hard burst
  71. INTEGRAL GRB 070707 is a short hard burst
  72. GRB 070707: A long GRB detected by INTEGRAL
  73. GRB 070707: A long GRB detected by INTEGRAL
  74. GRB 070429B: NIR Observations
  75. GRB070704: FAVOR optical observations
  76. GRB 070704 : Liverpool Telescope Observations
  77. GRB 070611: VLT observations
  78. VLA detection of GRB 070612A in C Band
  79. Konus-Wind observation of GRB 070626
  80. GRB 070704: Swift-XRT refined analysis
  81. Swift/UVOT Observations of GRB070704
  82. GRB 070704: Correction to GCN Circ 6594
  83. GRB 070704: Swift detection of a burst
  84. GRB 070626: Suzaku/WAM observation of the prompt emission
  85. GRB 070626: IPN localization and Konus spectrum of a bright long burst
  86. GRB 070628 Swift-UVOT Refined Analysis
  87. GRB 070628: Swift XRT refined analysis
  88. GRB 070628: Watcher Observations
  89. Swift UVOT Observations of GRB 070628
  90. GRB 070628: Swift detection of a possible burst
  91. GRB 070612A: Allen Telescope Array Observations
  92. IBAS Alert n. 4638: Not a GRB
  93. OT20050728 was not an optical GRB afterglow
  94. INTEGRAL burst GRB070615: X-ray continued observations
  95. IBAS Alert n.4637: not a GRB
  96. GRB 070612A: Second Epoch WSRT Radio Observations
  97. GRB070621: RTT150 optical observations
  98. GRB 070621: VLT optical observations
  99. GRB 070621: Swift/UVOT Upper Limits
  100. Keck Laser Guide Star Adaptive Optics Imaging of GRB 070621

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