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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').
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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"

15359 results found.

  1. GRB 050716: Refined XRT analysis.
  2. GRB050716: Correction to sign in XRT coordinate
  3. Swift UVOT Observations of GRB 050714B
  4. Konus-Wind observation of GRB 050713A
  5. GRB 050714B: refined XRT analysis
  6. GRB 050714B: candidate afterglow does not fade
  7. GRB 050714: Swift XRT afterglow position
  8. GRB 050713A: XRT refined analysis
  9. GRB 050709: Spectroscopy
  10. GRB 050713A : Swift-BAT Refined Analysis
  11. GRB050713: Liverpool Telescope prompt observations
  12. GRB 050712, optical observations
  13. GRB 050713, R-band observations at NOT
  14. GRB050709, optical observations
  15. GRB050709: A Possible Short-Hard GRB Localized by HETE
  16. H11603: An X-ray flare from V4641 Sgr, or a possible XRF
  17. CORRECTION: GRB050603 Swift UVOT Afterglow Observations
  18. H3800 and H3801 on 2005 June 11: two bursts from SGR1806-20 localized by HETE
  19. GRB 050416(a): Host Galaxy Redshift Determination
  20. GRB050607: refined analysis of prompt REM observations
  21. GRB 050607: RAPTOR-S Early Optical Limits
  22. GRB050607: KAIT optical limits
  23. GRB 050525a, Mid-Infrared Observations
  24. GRB 050607: Optical decay and spectral slope
  25. GRB050607,optical observation
  26. GRB 050607 - XRT refined data analysis
  27. GRB 050603: prediction of t_break
  28. GRB 050603: Redshift
  29. Konus-Wind observation of GRB 050603
  30. GRB 050603: Analysis of UVOT data
  31. GRB050603: Fading Afterglow observed by Swift UVOT
  32. GRB050603, submillimetre observations
  33. GRB 050603: Swift XRT Position
  34. GRB 050603: Swift-BAT refined analysis of a long three-spiked burst
  35. GRB 050603: INTEGRAL shows it is not a short GRB
  36. GRB 050408: jet break in the XRT light curve
  37. GRB 050525a, SMARTS optical/IR afterglow observations
  38. GRB050528: BOOTES optical candidate (retraction)
  39. Possible GRB050528: no candidate from Liverpool Telescope
  40. GRB 050509b: refined XRT/Chandra afterglow position analysis
  41. GRB 050525B: Swift-BAT observations
  42. GRB050525A,optical observation
  43. GRB 050525 : Lulin optical afterglow observations
  44. GRB050525: Super-LOTIS observations
  45. GRB 050525, spectral lag pseudo-redshift
  46. GRB 050525: BART optical observation
  47. GRB 050525A: Swift-BAT refined analysis
  48. GRB050525: Optical observations
  49. GRB 050525B: INTEGRAL shows it is unrelated to GRB050525A
  50. Konus-Wind observation of GRB 050525
  51. GRB 050525: TAROT observations of the early afterglow
  52. GRB 050525, infrared observations
  53. GRB 050525: observatons of the optical afterglow
  54. GRB050525: ROTSE-III Refined Analysis
  55. XRF050522: NIR observations of XRT candidate
  56. XRF 050522: Swift XRT refined analysis
  57. XRF 050522: Swift XRT observation
  58. XRF050522, BVRcIc field photometry
  59. XRF050522: Optical Observations
  60. XRF 050522 detected with INTEGRAL
  61. GRB 050520: VLT/ULTRACAM observations
  62. GRB 050520: Swift XRT refined analysis
  63. GRB 050520: Swift XRT position
  64. GRB 050520: VLT/ULTRACAM observations
  65. GRB 050520 - A long GRB detected with INTEGRAL
  66. GRB 050504: Swift XRT afterglow candidate has faded
  67. GRB 050509B and short GRB-SN association? (corrected)
  68. GRB 050509B and short GRB-SN association?
  69. Refined Chandra analysis of GRB 050509b
  70. GRB050509b, SDSS pre-burst observations
  71. GRB 050509b: Keck/Chandra Cross-Correlation
  72. GRB 050509b: Keck/Chandra Cross-Correlation
  73. Chandra observation of GRB 050509b
  74. GRB 050509b Milagro GeV/TeV Observations
  75. GRB050509B: Optical observations at the Very Large Telescope
  76. GRB 050509c: ROTSE-III Optical Limits
  77. GRB 050505, early TAROT observation
  78. GRB 050509b: Further Analysis of Keck LRIS Images
  79. GRB 050509b: Precision Astrometry
  80. GRB 050509b: optical observations
  81. GRB 050509b: Swift XRT Position
  82. GRB 050509a: Swift XRT Position
  83. GRB 050505: Keck I-band Magnitude
  84. GRB050505: AAVSO observations
  85. GRB050416A : 1 GHz limit from GMRT
  86. GRB 050505: Keck absorption spectrum and redshift (z=4.27)
  87. GRB050505: Optical Afterglow Candidate
  88. GRB 050505: Swift XRT Position
  89. GRB 050504: Swift XRT position
  90. GRB050502b: Afterglow Confirmation: Correction to OT Coordinates
  91. GRB050502b: Afterglow Confirmation
  92. GRB050502: P200 Observations (Correction)
  93. GRB050502: P200 Observations
  94. GRB 050504: A long GRB detected with INTEGRAL
  95. GRB050502a: P60 Observations (Correction)
  96. GRB050502a: P60 Observations
  97. GRB 050502a: RBO Observations
  98. GRB050502A: Optical Observations
  99. Swift UVOT refined analysis
  100. GRB 050502b: Swift XRT Position

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