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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"

32757 results found.

  1. GRB050525a: HST Observations
  2. CORRECTION: GRB050603 Swift UVOT Afterglow Observations
  3. H3800 and H3801 on 2005 June 11: two bursts from SGR1806-20 localized by HETE
  4. XRF 050509c: Optical monitoring
  5. XRF050509c: Radio Detection
  6. GRB 050416(a): Host Galaxy Redshift Determination
  7. GRB 050607: MDM Observation
  8. GRB 050607: RTT150 optical observations
  9. GRB050607: refined analysis of prompt REM observations
  10. Swift/UVOT observations of GRB050607
  11. GRB 050607 : Lulin R-band observation
  12. GRB 050607: PROMPT VRcIc Observations
  13. GRB 050607: RAPTOR-S Early Optical Limits
  14. GRB050607: KAIT optical limits
  15. GRB 050525a, Mid-Infrared Observations
  16. GRB 050607: MDM Observations
  17. GRB050607,optical observation
  18. GRB 050607 - XRT refined data analysis
  19. GRB 050603: prediction of t_break
  20. Limits on a SN in the field of GRB 050509b
  21. GRB 050603: Redshift
  22. GRB 050603 - XRT data analysis of the first day
  23. Konus-Wind observation of GRB 050603
  24. GRB 050603: Analysis of UVOT data
  25. GRB050603: Fading Afterglow observed by Swift UVOT
  26. GRB050603, submillimetre observations
  27. GRB 050603: Swift XRT Position
  28. GRB050603: Radio Detection
  29. GRB 050603: Swift-BAT refined analysis of a long three-spiked burst
  30. GRB 050603: Afterglow Identification from LCO
  31. GRB 050603: INTEGRAL shows it is not a short GRB
  32. GRB 050408: jet break in the XRT light curve
  33. GRB 050525a, infrared observations
  34. GRB 050525a, SMARTS optical/IR afterglow observations
  35. Correction to GCN Circ 3502 on GRB 050528
  36. Swift-BAT GRB 050528: a soft burst
  37. Update on Swift-BAT GRB 050528 (Trigger 130679)
  38. GRB050528: BOOTES optical candidate (retraction)
  39. GRB050504: Ashra-P2/3 monitor and Ashra-AFT response
  40. GRB050525a: Radio Observations
  41. GRB 050509b: refined XRT/Chandra afterglow position analysis
  42. GRB050525a: optical upper limits
  43. GRB 050525a: SARA Observations
  44. GRB 050525B: Swift-BAT observations
  45. GRB 050525: MITSuME Optical Observation in VRI
  46. GRB 050525a: MDM Observations
  47. GRB050525A,optical observation
  48. GRB 050525 : Lulin optical afterglow observations
  49. GRB050525: Super-LOTIS observations
  50. GRB 050525, spectral lag pseudo-redshift
  51. GRB 050525a: Gemini/GMOS Spectra
  52. GRB050306: optical afterglow not confirmed
  53. GRB 050525: BART optical observation
  54. GRB 050525A: BOOTES simultaneous optical observations
  55. GRB 050525A: Swift-BAT refined analysis
  56. GRB050525: Optical observations
  57. GRB 050525B: INTEGRAL shows it is unrelated to GRB050525A
  58. Swift/UVOT UV and optical detections of GRB 050525
  59. Konus-Wind observation of GRB 050525
  60. GRB 050525: TAROT observations of the early afterglow
  61. INTEGRAL detection of GRB 050525
  62. GRB 050525, infrared observations
  63. GRB 050525: Optical observation
  64. GRB 050525: observatons of the optical afterglow
  65. GRB050525: ROTSE-III Refined Analysis
  66. GRB 050525 - Very Bright, Not Short
  67. GRB 050525: Swift Detection of a Bright, Possibly Short Burst
  68. GRB 050525A: ROTSE-III Detection of Possible Counterpart
  69. XRF050522: NIR observations of XRT candidate
  70. XRF 050522: Swift XRT refined analysis
  71. XRF050522: Radio Observations
  72. Swift/UVOT observation of XRF 050522
  73. GRB 050509A: Further I-band imaging
  74. XRF 050522: Continued NIR P200 Monitoring
  75. RBO Observations of GRB050522
  76. GRB050520: Radio Observations
  77. XRF 050522: Swift XRT observation
  78. XRF050522, BVRcIc field photometry
  79. XRF 050522 : Lulin observations
  80. XRF050522: Optical Observations
  81. XRF050522: Near-infrared Observations
  82. XRF 050522: KAIT observations
  83. GRB 050520: VLT/ULTRACAM observations
  84. Swift UVOT Observations of GRB 050520
  85. GRB 050520: Swift XRT refined analysis
  86. XRF050509C: Chandra Afterglow Detection
  87. XRF 050509c: Swift XRT Upper Limit
  88. XRF050509c: Radio Observations
  89. RBO Observations of GRB050520
  90. GRB 050520: P200 Observations
  91. GRB050520: Liverpool Telescope follow-up
  92. GRB 050520: TAROT optical limit
  93. GRB 050520: Swift XRT position
  94. GRB 050520: VLT/ULTRACAM observations
  95. GRB 050520: OSN optical observations
  96. No Swift-BAT Lightcurves in real-time for next 3 weeks
  97. Swift-BAT trigger 122203 is not a real GRB
  98. XRF 050509C: REM NIR and Optical refined analysis
  99. GRB 050504: Swift XRT afterglow candidate has faded
  100. XRF 050509c optical afterglow

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