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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"

37581 results found.

  1. VLA non-detection of GRB 070721B
  2. GRB 070802: REM optical observations
  3. GRB 070724B: Swift-XRT afterglow confirmation
  4. GRB 070802: Swift-XRT refined analysis
  5. GRB 070802: Confirmation of the optical afterglow
  6. GRB 070802, Swift-BAT refined analysis
  7. GRB 070802: VLT redshift
  8. GRB 070802: refined Swift XRT position
  9. GRB 070802: V-band detection of the candidate afterglow
  10. GRB 070802: LCO I-band candidate
  11. GRB 070802: GROND J band candidate
  12. GRB 070802: LCO optical observations
  13. GRB 070802: Swift detection of a burst
  14. GRB 070731, Swift-BAT refined analysis
  15. Konus-A observation of GRB 070729
  16. Swift/UVOT detection of GRB070714B
  17. GRB 070724B: pseudo-z ~ 1.10 from prompt emission spectrum
  18. GRB 070729: LCO optical imaging
  19. VLA upper limit on short hard burst GRB 070714B
  20. Intense burst from SGR 1806-20 detected on July 27
  21. GRB 070729: Swift-XRT refined analysis
  22. GRB 070729, Swift-BAT refined analysis
  23. GRB 070729: Magellan NIR Observations
  24. GRB 070724B: P60 Observations
  25. GRB 070729: Swift detection of a short hard burst
  26. GRB 070724B: Swift/UVOT Upper limits
  27. GRB 070724B: Swift-XRT afterglow likely candidate
  28. GRB 070721A: optical observations
  29. GRB 070724A: further VLT observations
  30. GRB 070724B: Suzaku WAM observation of the prompt emission
  31. Konus-Wind observation of GRB 070724B
  32. GRB 070724B: Analysis of AGILE gamma-ray data
  33. GRB 070724B: Swift-XRT afterglow candidates
  34. GRB 070724b: First Gamma Ray Burst Localization by SuperAGILE onboard
  35. Four radio sources in Swift-XRT error box of GRB 070724
  36. GRB 070724: optical observations
  37. GRB 070724: P60 and Gemini Observations
  38. GRB 060814 - Keck host detection and redshift
  39. GRB 070724: IR observations
  40. GRB 070724: Closer association with DSS source
  41. GRB 070724: Swift-XRT Team refined analysis
  42. GRB 070724: Pre-Imaging Shows a Source in the XRT Error Circle
  43. Short-Hard GRB070714B: PROMPT Observations
  44. GRB 070724, Swift-BAT refined analysis of a short burst
  45. GRB 070721B: further observations and analysis
  46. GRB 070724: Swift detection of a burst
  47. GRB 070326: Detection of first burst from BAT Slew Survey (BATSS)
  48. GRB 070714B: Keck observations
  49. GRB 070721B: optical observations and proposed redshift
  50. GRB 070721B, Further Swift-BAT refined analysis
  51. Swift/UVOT Observations of GRB070721A
  52. GRB 070721B : Faulkes Telescope South observations
  53. GRB 070721B: Swift-XRT refined analysis
  54. GRB 070721A : Faulkes Telescope South optical limit
  55. GRB 070721A: Swift/XRT refined analysis
  56. GRB 070721B, Swift-BAT refined analysis
  57. GRB 070721A, Swift-BAT refined analysis
  58. GRB070721B: A bright UVOT candidate
  59. GRB 070721B: Swift detection of a burst
  60. GRB 070721: Swift detection of a possible burst
  61. GRB 070714B: Swift/BAT and Suzaku/WAM joint spectral analysis
  62. GRB 070714B : Suzaku WAM observation of the prompt emission
  63. GRB 070714A: Swift-BAT T_zero
  64. Erratum : Suzaku WAM observation of GRB 070704
  65. GRB 070714A: Swift/UVOT Upper limits
  66. GRB 070714B: Swift/UVOT Upper Limits
  67. GRB 070714B: Swift-BAT spectral lag for the SHB
  68. GRB 070714B: confirmation of optical afterglow
  69. GRB 070616: No Evidence for I Band Afterglow
  70. GRB 070714A: Swift XRT refined analysis
  71. GRB070714B: Swift-XRT refined analysis
  72. GRB 070707: Swift-XRT follow-up observations
  73. GRB 070714b ("Bastille"): Optical Pre-Imaging (Clarification)
  74. GRB 070714 ("Bastille"): Optical Pre-Imaging
  75. GRB 070714B, Swift-BAT refined analysis of the short hard burst
  76. GRB 070714A, Swift-BAT refined analysis
  77. GRB 070714 : Liverpool Telescope optical counterpart ?
  78. GRB 070714: Swift detection of a bright burst, possibly short
  79. Swift detection of a possible burst (Trigger 284850)
  80. SN 2007bg - off-axis GRB?
  81. GRB 070704: RTT150 optical observations
  82. GRB 070704: Suzaku/WAM observation of the prompt emission
  83. Konus-Wind observation of GRB 070707
  84. GRB 070707: optical afterglow
  85. GRB 070707: object inside XRT error circle
  86. Swift XRT observation of GRB 070707
  87. GRB 070707: VLT observations
  88. INTEGRAL GRB 070707 is a short hard burst
  89. INTEGRAL GRB 070707 is a short hard burst
  90. GRB 070707: A long GRB detected by INTEGRAL
  91. GRB 070707: A long GRB detected by INTEGRAL
  92. GRB 070429B: NIR Observations
  93. GRB070704: FAVOR optical observations
  94. GRB 070704 : Liverpool Telescope Observations
  95. GRB 070611: VLT observations
  96. VLA detection of GRB 070612A in C Band
  97. Konus-Wind observation of GRB 070626
  98. GRB 070704: Swift-XRT refined analysis
  99. Swift/UVOT Observations of GRB070704
  100. GRB 070704, Swift-BAT refined analysis

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