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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"

21906 results found.

  1. GRB 070913: SMARTS optical/IR observations
  2. GRB 070913: TAROT La Silla observatory optical observations
  3. GRB 070913: Swift detection of a burst
  4. GRB 070911: PAIRITEL IR Observations
  5. GRB 070911, Swift-BAT refined analysis
  6. Intense burst from SGR 1806-20 detected on September 7
  7. GRB 070809: Confirmation of optical transient
  8. Candidate Orphan GRB Optical Transient in IC 4779
  9. Las Campanas observations of possible TAROT GRB transient near IC
  10. Orphan GRB candidate in IC 4779 at TAROT La Silla observatory
  11. Konus-Wind observation of GRB 070824
  12. GRB 070824 - Combined SuperAGILE/IPN Localization
  13. Konus-Wind observation of very bright GRB 070821
  14. GRB 070731: Swift/UVOT Upper Limit
  15. GRB 070805: UVOT afterglow candidate retraction
  16. GRB 070810B : Faulkes Telescope South Observations
  17. GRB 070810A: Continued Keck Imaging
  18. GRB 070810B: Keck spectroscopy of possible host galaxies
  19. GRB070810B: Swift/UVOT Upper Limits
  20. GRB 070810B: Xinglong TNT optical Upper Limit
  21. GRB070810B: Optical observations with KANATA
  22. GRB 070809: Swift/UVOT Upper Limits
  23. VLA upper limit on the short hard burst GRB 070729
  24. No radio detection in superAGILE burst 070724B
  25. GRB 070809: Keck Imaging
  26. GRB 070810: enhanced Swift-XRT position
  27. GRB 070810: Swift/UVOT Optical Counterpart
  28. GRB 070808: Swift/UVOT upper limits
  29. GRB 070809: ROTSE-III Optical Limits
  30. GRB 070809: Swift detection of a short burst
  31. GRB 070808 : Faulkes Telescope South Observations
  32. GCN Swift XRT update position notices and enhanced position circulars
  33. GRB 070808: Swift XRT refined analysis
  34. GRB 070808: Xinglong TNT optical Upper Limit
  35. GRB070808: Optical observations with KANATA
  36. GRB070808 - SDSS Pre-Burst Observations
  37. GRB 070808: ROTSE-III Optical Limits
  38. GRB070805 XRT and UVOT afterglow candidate
  39. GRB070612A: Radio upper limit from GMRT
  40. Swift/UVOT observations of GRB070805
  41. GRB 070805: Swift detection of a burst
  42. UVOT observations of SAXJ1810.8-2609
  43. Swift detection of a outburst from SAX J1810.8-2609
  44. VLA non-detection of GRB 070721B
  45. GRB 070802: REM optical observations
  46. GRB 070802: Swift-XRT refined analysis
  47. GRB070802: Swift/UVOT upper limits
  48. GRB 070802, Swift-BAT refined analysis
  49. GRB 070802: V-band detection of the candidate afterglow
  50. GRB 070802: GROND J band candidate
  51. Swift/UVOT detection of GRB070714B
  52. VLA upper limit on short hard burst GRB 070714B
  53. Intense burst from SGR 1806-20 detected on July 27
  54. GRB070729: Swift/UVOT upper limits
  55. GRB 070729: Swift-XRT refined analysis
  56. GRB 070724B: P60 Observations
  57. GRB 070724B: Swift/UVOT Upper limits
  58. GRB 070721A: optical observations
  59. GRB 070724A: further VLT observations
  60. GRB 070724B: Suzaku WAM observation of the prompt emission
  61. Konus-Wind observation of GRB 070724B
  62. Four radio sources in Swift-XRT error box of GRB 070724
  63. GRB 070724: P60 and Gemini Observations
  64. GRB 060814 - Keck host detection and redshift
  65. Swift/UVOT refined analysis of GRB070724
  66. GRB 070724: Swift-XRT Team refined analysis
  67. GRB 070721B: further observations and analysis
  68. GRB 070724: Swift detection of a burst
  69. GRB 070714B: Keck observations
  70. Swift/UVOT Observations of GRB070721A
  71. GRB 070721B : Faulkes Telescope South observations
  72. GRB 070721A : Faulkes Telescope South optical limit
  73. GRB 070721A: Swift/XRT refined analysis
  74. GRB070721B: A bright UVOT candidate
  75. GRB 070714B : Suzaku WAM observation of the prompt emission
  76. GRB070714B: TNG NIR observations
  77. GRB 070714A: Swift/UVOT Upper limits
  78. GRB 070714B: Swift/UVOT Upper Limits
  79. GRB 070714B: confirmation of optical afterglow
  80. GRB 070616: No Evidence for I Band Afterglow
  81. GRB 070714A: Swift XRT refined analysis
  82. GRB070714B: Swift-XRT refined analysis
  83. GRB 070714B, Swift-BAT refined analysis of the short hard burst
  84. GRB 070714 : Liverpool Telescope optical counterpart ?
  85. GRB 070714: Swift detection of a bright burst, possibly short
  86. GRB 070704: RTT150 optical observations
  87. GRB 070704: Suzaku/WAM observation of the prompt emission
  88. GRB 070707: optical afterglow
  89. Swift/UVOT Observations of GRB070707
  90. Swift XRT observation of GRB 070707
  91. GRB 070707: VLT observations
  92. GRB070704: FAVOR optical observations
  93. GRB 070704 : Liverpool Telescope Observations
  94. GRB 070611: VLT observations
  95. VLA detection of GRB 070612A in C Band
  96. Konus-Wind observation of GRB 070626
  97. GRB 070704: Swift-XRT refined analysis
  98. Swift/UVOT Observations of GRB070704
  99. GRB 070704: Correction to GCN Circ 6594
  100. GRB 070704: Swift detection of a burst

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