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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"

32570 results found.

  1. XRF050509c: Radio Observations
  2. RBO Observations of GRB050520
  3. GRB 050520: P200 Observations
  4. GRB050520: Liverpool Telescope follow-up
  5. GRB 050520: TAROT optical limit
  6. GRB 050520: Swift XRT position
  7. GRB 050520: VLT/ULTRACAM observations
  8. GRB 050520: OSN optical observations
  9. No Swift-BAT Lightcurves in real-time for next 3 weeks
  10. Swift-BAT trigger 122203 is not a real GRB
  11. XRF 050509C: REM NIR and Optical refined analysis
  12. GRB 050504: Swift XRT afterglow candidate has faded
  13. XRF 050509c optical afterglow
  14. GRB 050509B and short GRB-SN association? (corrected)
  15. GRB 050509B and short GRB-SN association?
  16. GRB 050509B: Subaru Optical Observations
  17. GRB050502b: Early Observation
  18. GRB050509b, Bok telescope B-band imaging
  19. Refined Chandra analysis of GRB 050509b
  20. GRB050509b, SDSS pre-burst observations
  21. GRB 050509b: Keck/Chandra Cross-Correlation
  22. Chandra observation of GRB 050509b
  23. GRB 050509b: RAPTOR deep, early limits.
  24. GRB050509B: Optical/Infared observations
  25. GRB 050509b: Swift/UVOT follow-up measurements
  26. GRB 050509b Milagro GeV/TeV Observations
  27. GRB050509B: Optical observations at the Very Large Telescope
  28. GRB 050509b: No Optical Variability in XRT Error Circle
  29. GRB050416: Afterglow detection at 188 nm with Swift UVOT
  30. GRB 050509a: Swift-BAT refined analysis
  31. GRB 050509c: ROTSE-III Optical Limits
  32. GRB 050509B: WSRT Radio Observations
  33. GRB050509c: REM NIR and Optical observations (errata corrige to GCN 3400)
  34. GRB 050505, early TAROT observation
  35. GRB050509c (=H3751): An X-Ray Flash Localized By HETE
  36. GRB 050509b: Further Analysis of Keck LRIS Images
  37. GRB 050509b: Physical Properties of the Candidate Host galaxy
  38. GRB 050505: SARA Observations
  39. Swift UVOT Follow-up Observations of GRB 050509B
  40. GRB 050509B, Optical Observations
  41. GRB 050509B: Swift/XRT refined analysis
  42. GRB050509a: Swift UVOT observations
  43. GRB 050509b: Optical observations
  44. GRB 050509b: Precision Astrometry
  45. GRB 050509b: Possible Optical Counterpart
  46. GRB 050509A: Optical observations
  47. GRB 050509b: Optical Counterpart Candidate
  48. GRB050509b: Radio Observations
  49. GRB 050509b: Swift-BAT refined analysis of the short hard burst
  50. GRB 050509b: optical observations
  51. GRB 050509b: Swift XRT Position
  52. GRB 050509B: ROTSE-III Optical Limits
  53. GRB 050509a: Swift XRT Position
  54. GRB 050505: Keck I-band Magnitude
  55. GRB 050505: early time observations
  56. GRB 050502a: Swift XRT Upper Limit
  57. GRB 050505, simultaneous optical observation
  58. GRB050505: Infrared observations
  59. GRB 050505: Further Swift UVOT observations.
  60. GRB050505: AAVSO observations
  61. GRB050416A : 1 GHz limit from GMRT
  62. GRB 050505: Keck absorption spectrum and redshift (z=4.27)
  63. GRB 050505 UVOT
  64. GRB050505: Optical Afterglow Candidate
  65. GRB 050505: Swift XRT Position
  66. GRB050505 Swift-BAT refined analysis
  67. GRB 050502a: Optical Observations
  68. GRB 050416b:Swift XRT afterglow upper limits
  69. GRB 050416b:Swift XRT afterglow upper limits
  70. Swift-BAT detection of GRB050505
  71. GRB 050504: Swift XRT position
  72. GRB050502b: Afterglow Confirmation: Correction to OT Coordinates
  73. GRB050502b: Afterglow Confirmation
  74. GRB050502: P200 Observations (Correction)
  75. GRB050502: P200 Observations
  76. GRB 050504 : R band observation at Lulin observatory
  77. Swift UVOT observation of GRB 050504
  78. GRB 050504, R band Observations
  79. GRB050504: P60 Observations
  80. GRB 050502b, Optical observations
  81. GRB050502a: P60 Observations (Correction)
  82. GRB050502a: P60 Observations
  83. GRB 050502a: RBO Observations
  84. GRB 050502A: WSRT Radio Observations
  85. GRB050502A: Optical Observations
  86. GRB050502B Swift-BAT refined analysis
  87. GRB050502B: I band source in XRT error circle
  88. Swift UVOT refined analysis
  89. Retraction of Swift-BAT trigger 116145
  90. GRB 050502a : R band observation at Lulin observatory
  91. GRB 050502b : optical observation at Lulin observatory
  92. GRB 050502b: Swift XRT Position
  93. GRB050502B: Optical Limits from ANU 1m
  94. GRB 050502: INTEGRAL results
  95. GRB050502: ANU 1m optical Observations
  96. GRB 050502: Confirmed variability of the afterglow candidate +
  97. GRB 050502: PAIRITEL IR Observations
  98. GRB 050502: ROTSE-III Detection of Possible Counterpart
  99. Swift-BAT Trigger 115881 is not a real GRB
  100. Swift/BAT possible detection of a weak burst GRB050430

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