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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"

20392 results found.

  1. GRB 071010B: Bright OT confirmed with TLS
  2. Optical Observation: GRB 071010
  3. Optical observations: GRB 071010A
  4. GRB071010B: Swift/XRT detection
  5. GRB 071010A: Keck/LRIS Photometry
  6. GRB 071010 REM NIR observations
  7. GRB 071010: TAROT La Silla observatory detection of the afterglow
  8. Radio detection of GRB 071003 with the VLA
  9. GRB 070810B: further XRT analysis
  10. Konus-Wind observation of GRB 071003
  11. GRB 071003: Possible rebrightening
  12. GRB 071003 : Lulin R-band observations
  13. GRB 071003: OA power-law decay indices from KAIT
  14. GRB 071003: P60 Confirmation of Optical Afterglow
  15. Faulkes Telescope South observations of GRB 071001
  16. GRB 071001: Swift detection of a burst
  17. VLA observation of GRB 070923
  18. GRB 070911, SMARTS optical/IR afterglow observations
  19. GRB070925: Swift-XRT Afterglow confirmation
  20. GRB 070925: Gemini South Imaging
  21. GRB 070920B: ROTSE-III Early Optical Limits
  22. GRB 070920B: TAROT La Silla observatory optical observations
  23. INTEGRAL ToO observations of SGR1806-20
  24. GRB 070920B: NOT optical observations
  25. GRB 070920: TAROT Calern observatory optical observations
  26. SGR1806-20: Swift-BAT detection of enhanced activity
  27. GRB 070917: P60 Observations
  28. GRB 070917: MITSuME Akeno Ic upper limit
  29. GRB 070917: R band observations
  30. GRB 070913: Swift-XRT detection of the possible X-ray afterglow
  31. GRB 070809: The Swift evidence for the SHB nature of this burst
  32. GRB 070913: Swift-BAT refined analysis
  33. GRB 070913: SMARTS optical/IR observations
  34. GRB 070913: TAROT La Silla observatory optical observations
  35. Swift-BAT Notices back to autonomous real-time distribution
  36. GRB 070911: PAIRITEL IR Observations
  37. GRB 070911: Swift detection of a burst
  38. GRB 070809: Confirmation of optical transient
  39. Candidate Orphan GRB Optical Transient in IC 4779
  40. Las Campanas observations of possible TAROT GRB transient near IC
  41. Orphan GRB candidate in IC 4779 at TAROT La Silla observatory
  42. GRB 070824 - Combined SuperAGILE/IPN Localization
  43. Konus-Wind observation of very bright GRB 070821
  44. GRB 070731: Swift/UVOT Upper Limit
  45. IPN Localization of GRB 070821 (long, very bright)
  46. GRB 070805: UVOT afterglow candidate retraction
  47. GRB 070810A: ROTSE-III Refined Analysis
  48. GRB 070810B : Faulkes Telescope South Observations
  49. GRB 070810A: Continued Keck Imaging
  50. GRB 070810B: Keck spectroscopy of possible host galaxies
  51. GRB070810B: Swift/UVOT Upper Limits
  52. GRB 070810B: XRT refined analysis
  53. GRB 070810B: Xinglong TNT optical Upper Limit
  54. GRB070810B: Optical observations with KANATA
  55. A giant outburst from Cygnus X-1 detected by Konus-Wind and Suzaku-WAM
  56. GRB 070809: Swift/UVOT Upper Limits
  57. VLA upper limit on the short hard burst GRB 070729
  58. No radio detection in superAGILE burst 070724B
  59. GRB 070809: Keck Imaging
  60. GRB 070810: enhanced Swift-XRT position
  61. GRB 070810: Swift/UVOT Optical Counterpart
  62. GRB 070808: Swift/UVOT upper limits
  63. GRB 070809: Swift detection of a short burst
  64. GRB 070808 : Faulkes Telescope South Observations
  65. GCN Swift XRT update position notices and enhanced position circulars
  66. GRB 070808: Swift XRT refined analysis
  67. GRB 070808: Xinglong TNT optical Upper Limit
  68. GRB070808: Optical observations with KANATA
  69. GRB070808 - SDSS Pre-Burst Observations
  70. GRB 070808: ROTSE-III Optical Limits
  71. GRB070805 XRT and UVOT afterglow candidate
  72. GRB070612A: Radio upper limit from GMRT
  73. Swift/UVOT observations of GRB070805
  74. UVOT observations of SAXJ1810.8-2609
  75. Swift detection of a outburst from SAX J1810.8-2609
  76. VLA non-detection of GRB 070721B
  77. GRB 070802: REM optical observations
  78. GRB 070802: Swift-XRT refined analysis
  79. GRB070802: Swift/UVOT upper limits
  80. GRB 070802: V-band detection of the candidate afterglow
  81. GRB 070802: GROND J band candidate
  82. Swift/UVOT detection of GRB070714B
  83. AGILE-ACS position for the SGR 1806-20 July 27 burst
  84. VLA upper limit on short hard burst GRB 070714B
  85. GRB070729: Swift/UVOT upper limits
  86. GRB 070729: Swift-XRT refined analysis
  87. GRB 070724B: P60 Observations
  88. GRB 070724B: Swift/UVOT Upper limits
  89. GRB 070721A: optical observations
  90. GRB 070724A: further VLT observations
  91. Four radio sources in Swift-XRT error box of GRB 070724
  92. GRB 070724: P60 and Gemini Observations
  93. GRB 060814 - Keck host detection and redshift
  94. Swift/UVOT refined analysis of GRB070724
  95. GRB 070724: Swift-XRT Team refined analysis
  96. GRB 070721B: further observations and analysis
  97. GRB 070724: Swift detection of a burst
  98. GRB 070714B: Keck observations
  99. Swift/UVOT Observations of GRB070721A
  100. GRB 070721B : Faulkes Telescope South observations

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