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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"

32723 results found.

  1. GRB 050128 Optical observation with REM
  2. GRB050128: Faulkes Telescope South observations
  3. GRB 050124: Radio Observations
  4. GRB 050128: near-infrared observations with REM
  5. GRB050128,optical observations
  6. GRB 050126: A NIR afterglow candidate in the revised XRT error circle
  7. GRB 050126: Radio Observations
  8. GRB050128 Swift-BAT observations
  9. GRB 050128: Swift XRT prompt afterglow position
  10. GRB 050124: K-band afterglow observations
  11. GRB050126: MASTER optical limit for KECK OT
  12. GRB050126: Burst Parameters Measured by BAT
  13. GRB050126: MASTER optical observations
  14. GRB 050126: Detection of NIR afterglow with Keck/NIRC
  15. GRB 050124: NIR afterglow confirmed with Keck/NIRC
  16. GRB050124: No Swift UVOT Detection of Afterglow Emission
  17. GRB 050124, SMARTS optical/IR observations
  18. GRB 050117a: Radio Observations
  19. GRB 050124 I-band observation
  20. GRB 050124: NIR Candidates from Keck/NIRC
  21. GRB050124,optical observation
  22. GRB 050124 : Lulin R-band follow-up observation
  23. GRB 050124: Swift XRT Detection of X-ray Afterglow Emission
  24. GRB050124: Refined BAT position, spectral and fluence information
  25. GRB 050123 : I-band follow-up observation
  26. GRB050123: optical limit 1.8h before GRB
  27. GRB 050123: KAIT observations
  28. GRB050123: P60 Observations
  29. CFHTLS optical transient unlikely to be a GRB
  30. GRB050117a: Radio Observations
  31. GRB050117a: Refined analysis
  32. GRB 041224 and GRB 041226: BOOTES-2 simultaneous observations
  33. GRB050117: Palomar WIRC Ks-band observations
  34. GRB050117: optical observation
  35. GRB 050117, I-band observations
  36. GRB 050117: Optical observation
  37. GRB050117: Refined XRT position
  38. GRB050117: MASTER optical observations
  39. MASTER:GRB050117 SWIFT
  40. GRB050117: Swift-BAT detection of a long multi-peaked burst
  41. SGR 1806-20: RXTE/PCA pulse frequency during flare
  42. SGR 1806-20: Further low frequency GMRT results
  43. SGR1806-20: Swift-BAT observations of two additional bursts
  44. SGR1806: Optical Transient Candidates in SOHO/LASCO Images
  45. Further VLA observations of SGR 1806-20
  46. SGR 1806-20 and extragalactic short-duration GRBs
  47. Fourth Epoch VLA observations of SGR 1806-20
  48. SGR 1806-20: Low frequency GMRT results; submission to GCN circulars
  49. SGR 1806-20: Temporal and Spectral behavior of radio transient
  50. ATCA observations of SGR 1806-20
  51. SGR 1806-20, RHESSI observations of the 041227 giant flare
  52. Third epoch observations of SGR 1806-20 with VLA
  53. Second Epoch VLA observations of SGR 1806-20
  54. Second-epoch VLA observations of SGR 1806-20
  55. SGR1806: Detection of a Sudden Ionospheric Disturbance
  56. DETECTION OF POLARIZATION OF THE RADIO EMISSION FROM SGR 1806-20
  57. VLA observations of SGR 1806-20
  58. SGR1806 VLA Observations
  59. VLA observations of SGR 1806-20
  60. SGR1806-20: RXTE-PCA observation of the 041227 super-flare
  61. GRB 041217: Optical observations
  62. GRB041219, early time observations
  63. The giant outburst from SGR 1806-20
  64. IPN localization of giant flare from SGR1806-20
  65. GRB041228: ROTSE-III Optical Observations
  66. GRB041219; RXTE ASM Observations
  67. NIR Observations of GRB 041219
  68. GRB041226: ROTSE-III Optical Observations
  69. GRB041223: decay of the afterglow
  70. GRB041224: ROTSE-III Optical Observations
  71. GRB 041224: near-infrared observations with REM
  72. GRB 041223: XRT afterglow spectrum and light curve
  73. GRB 041223 Fluence measured by Swift-BAT
  74. GRB041223: optical and NIR observations with REM
  75. Swift-BAT Time History of GRB041219
  76. GRB 041219: TAROT optical observations
  77. GRB 041223: J-band observations of the afterglow
  78. GRB 041223: Detection of Optical Transient with LCO40
  79. GRB041223: Swift XRT Detection of X-ray Afterglow Emission
  80. GRB 041219c: PROMPT Observations
  81. GRB041223: ROTSE-III Optical Observations
  82. GRB 041218: optical observations
  83. Very high activity of SGR 1806-20
  84. GRB 041219: Second Epoch WSRT Radio Observations
  85. GRB 041219: WSRT Radio Afterglow Detection
  86. GRB 041219: Keck IR Observations and Astrometric Refinement of the
  87. GRB 041218: Optical observations
  88. GRB 041219 : optical follow-up observations
  89. Deep RAPTOR observations during GRB 041219
  90. GRB 041218 Optical Observations
  91. GRB 041219 Optical Observations
  92. GRB041219: Optical Afterglow Detection
  93. GRB041219: Continued NIR Observations
  94. GRB 041219: Radio Afterglow Detection
  95. GRB 041218 : Radio Observations
  96. GRB 041218: R-band optical observations
  97. GRB041218: Liverpool Telescope optical observations
  98. GRB041218: optical observations
  99. GRB041219: Confirmed NIR Afterglow
  100. Swift-BAT detection of the bright long burst GRB041219

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