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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"

45545 results found.

  1. GRB 070714B : Suzaku WAM observation of the prompt emission
  2. GRB 070714A: Swift-BAT T_zero
  3. GRB070714B: TNG NIR observations
  4. Erratum : Suzaku WAM observation of GRB 070704
  5. GRB 070714A: Swift/UVOT Upper limits
  6. GRB 070714B: Swift/UVOT Upper Limits
  7. GRB 070714B: Swift-BAT spectral lag for the SHB
  8. GRB 070714B: confirmation of optical afterglow
  9. GRB 070616: No Evidence for I Band Afterglow
  10. GRB 070714A: Swift XRT refined analysis
  11. GRB070714B: Swift-XRT refined analysis
  12. GRB 070707: Swift-XRT follow-up observations
  13. GRB 070714b ("Bastille"): Optical Pre-Imaging (Clarification)
  14. GRB 070714 ("Bastille"): Optical Pre-Imaging
  15. GRB 070714B, Swift-BAT refined analysis of the short hard burst
  16. GRB 070714A, Swift-BAT refined analysis
  17. GRB 070714 : Liverpool Telescope optical counterpart ?
  18. GRB 070714: Swift detection of a bright burst, possibly short
  19. Swift detection of a possible burst (Trigger 284850)
  20. SN 2007bg - off-axis GRB?
  21. GRB 070704: RTT150 optical observations
  22. GRB 070704: Suzaku/WAM observation of the prompt emission
  23. Konus-Wind observation of GRB 070707
  24. Updated Swift/UVOT calibration
  25. GRB 070707: optical afterglow
  26. GRB 070707: object inside XRT error circle
  27. Swift/UVOT Observations of GRB070707
  28. Swift XRT observation of GRB 070707
  29. GRB 070707: VLT observations
  30. INTEGRAL GRB 070707 is a short hard burst
  31. INTEGRAL GRB 070707 is a short hard burst
  32. GRB 070707: A long GRB detected by INTEGRAL
  33. GRB 070707: A long GRB detected by INTEGRAL
  34. GRB 070429B: NIR Observations
  35. GRB070704: FAVOR optical observations
  36. GRB 070704 : Liverpool Telescope Observations
  37. GRB 070611: VLT observations
  38. VLA detection of GRB 070612A in C Band
  39. Konus-Wind observation of GRB 070626
  40. GRB 070704: Swift-XRT refined analysis
  41. Swift/UVOT Observations of GRB070704
  42. GRB 070704, Swift-BAT refined analysis
  43. GRB 070704: Correction to GCN Circ 6594
  44. GRB 070704: Swift detection of a burst
  45. GRB 070626: Suzaku/WAM observation of the prompt emission
  46. GRB 070626: IPN localization and Konus spectrum of a bright long burst
  47. GRB 070628 Swift-UVOT Refined Analysis
  48. GRB 070628: NIR detection of afterglow
  49. GRB 070628, Swift-BAT refined analysis
  50. GRB 070628: TAROT La Silla observatory optical observations
  51. GRB 070628: Swift XRT refined analysis
  52. GRB 070628: Watcher Observations
  53. Swift UVOT Observations of GRB 070628
  54. GRB 070628: Swift detection of a possible burst
  55. GRB 070612A: Allen Telescope Array Observations
  56. IBAS Alert n. 4638: Not a GRB
  57. OT20050728 was not an optical GRB afterglow
  58. INTEGRAL burst GRB070615: X-ray continued observations
  59. GRB 070616 : WIDGET simultaneous optical observations
  60. GRB 070616: Suzaku/WAM observation of the prompt emission
  61. IBAS Alert n.4637: not a GRB
  62. GRB 070612A: Second Epoch WSRT Radio Observations
  63. GRB070621: RTT150 optical observations
  64. GRB 070621: VLT optical observations
  65. GRB 070621: Swift/UVOT Upper Limits
  66. Keck Laser Guide Star Adaptive Optics Imaging of GRB 070621
  67. GRB 070621: Swift-BAT refined analysis
  68. WHT observations of GRB070621
  69. GRB070621: Swift XRT refined analysis
  70. GRB 070621: Gemini South optical imaging
  71. GRB 070621: UVOT-enhanced XRT position
  72. Observations of GRB070612A at Calar Alto
  73. GRB 070621: NOT observations
  74. GRB070621: OPTIMA-Burst optical upper limit
  75. GRB 070621: TAROT Calern observatory optical observations
  76. GRB 070621: Watcher Observations
  77. GRB 070621: ROTSE-III Prompt Optical Limits
  78. GRB 070621: Swift detection of a burst
  79. GMRT upper limit of GRB 070610/SWIFT J195509.6+261406 in 610 MHz
  80. GRB 070612A: TNG optical observations
  81. Swift/UVOT detection of GRB070616 optical afterglow.
  82. GRB070612A: Gemini Spectroscopic Redshift
  83. GRB 070612A: NOT observations
  84. GRB070616: Optical Observation by MITSuME Akeno
  85. GRB 070612B: Optical Observation by MITSuME Akeno
  86. GRB070616: Optical Observation by MITSuME Okayama
  87. GRB 070616, Swift-BAT further refined analysis
  88. GRB 070616: Swift XRT refined circular
  89. GRB 070612A: Possible WSRT Radio Detection
  90. GRB 070616: BTA astrometry and finding chart
  91. GRB 070616: BTA optical observations
  92. Swift/UVOT observations of GRB070616
  93. GRB 070616: TLS observation
  94. Swift XRT observations of the INTEGRAL burst GRB070615: Possible
  95. GRB 070616, Swift-BAT partial refined analysis
  96. GRB 070616: Swift detection of a burst
  97. GRB 070612B: optical observations
  98. UVOT Observations of INTEGRAL burst GRB070615
  99. VLA upper limit on GRB 070610
  100. GRB 070615

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