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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"

42005 results found.

  1. GRB 051008 Tautenburg Supernova Search
  2. GRB 051109B. Radio Observations
  3. GRB 051109A
  4. GRB051109A - radio observations
  5. GRB 051105a: GETS optical limit
  6. GRB 051109b: GETS observation
  7. GRB 051109A: KAIT optical observations
  8. Early RAPTOR measurements of GRB 051109a - the movie.
  9. Konus-Wind observation of GRB 051109A
  10. GRB 051109B: Swift-BAT refined analysis
  11. GRB 051109B: ROTSE-III Optical Limits
  12. GRB 051109A: Swift-UVOT Observations
  13. IPN triangulation and Konus spectrum of the short/soft GRB051107 (large
  14. GRB051109B: no UVOT source detected
  15. GRB051109B: XRT refined analysis
  16. GRB 051109B : Lulin Optical Observations
  17. GRB 051109A : Lulin BVRI Optical afterglow observation
  18. GRB051109A: further steepening in the X-ray light curve
  19. GRB051109A: XRT refined analysis
  20. GRB 051109a: BOOTES R & I-band detection of the early afterglow
  21. GRB051109B: XRT position
  22. GRB 051109B: Super-LOTIS Observations
  23. GRB 051109B Kiso optical follow-up observation
  24. GRB051105B: REM Optical observation
  25. GRB 051109B: Swift detection of a burst
  26. GRB 051109: HET Optical Spectrum and Absorption Redshift
  27. GRB 051109: PROMPT Detections
  28. GRB 051109: Rc and Ic observations
  29. GRB051109: Early Super-LOTIS Detection
  30. GRB 051109: Swift-BAT refined analysis
  31. GRB 051109a: IR Photometry and Astrometry
  32. GRB 051109a: MDM Observations
  33. GRB 051109A: ROTSE-III Decline rate for Optical Counterpart
  34. GRB051109: Swift detection of a burst
  35. GRB 051109a: IR Detections
  36. GRB 051109: ROTSE-III Detection of Possible Counterpart
  37. GRB051105B: Swift/XRT upper limit
  38. GRB051105B: Swift/UVOT upper limit
  39. GRB051103: optical observations
  40. GRB 051103, optical observations
  41. GRB051103: MASTER: OT limit and host galaxy candidates
  42. GRB051028: Swift-XRT refined analysis
  43. GRB 051105a, observation from Naini Tal and OSN
  44. GRB 051105A, 2nd epoch optical observations
  45. GRB 051105a: MDM Observations
  46. GRB 051105A: TNG optical observations
  47. GRB051105A: Swift/UVOT Observations
  48. GRB 051105A, radio observations
  49. GRB051103:_MASTER_optical_observations
  50. IPN triangulation and Konus spectrum of the bright short/hard GRB051103
  51. GRB 051105A, optical observations
  52. XRT observations of GRB 051105A
  53. GRB 051105: Swift-BAT improved refined analysis
  54. GRB 051105b: ART optical limits
  55. GRB051105B - A long GRB detected by INTEGRAL
  56. GRB 051105B (INTEGRAL 2701): Optical observation
  57. GRB 051105: Swift-BAT refined analysis
  58. GRB 051105: Optical limit
  59. GRB 051105: Swift detection of a short burst
  60. GRB 051016B host spectroscopy and redshift
  61. GRB051016B: optical observation
  62. Recent GRB UBVRcIc field photometry
  63. Konus-Wind observation of GRB 051028
  64. GRB051028:MASTER correction and final results
  65. GRB 051022: RTT150 optical observations
  66. GRB 051021A: RTT150 optical observations
  67. GRB051028 SARA Observation
  68. GRB051028: optical observations
  69. GRB051028: Swift/UVOT upper limits
  70. GRB051028: confirmation of the afterglow
  71. GRB051028: WHT optical candidate
  72. GRB051028: Swift XRT Position
  73. GRB051028:MASTER observations
  74. GRB 051028 (=H3951): A GRB localized by HETE
  75. GRB051028:MASTER optical observations
  76. GRB 051022: XRT Refined Spectral and Temporal Analysis--Correction
  77. GRB051022: Swift XRT measurement of jet break
  78. SGR 1806-20: continued moderate activity seen with INTEGRAL
  79. GRB051021B: Swift/UVOT Upper limits
  80. GRB 051021, Optical Observations
  81. GRB 051022: XRT Refined Spectral and Temporal Analysis
  82. GRB 051022, refined optical astrometry
  83. Chandra Observations of GRB 051022
  84. GRB051012: Swift-XRT analysis
  85. GRB 051022 Chandra Observations scheduled
  86. GRB051021B: Swift XRT refined analysis
  87. GRB051021a: optical observations
  88. GRB 051022: WSRT Radio Detection
  89. GRB 051022, mm counterpart
  90. GRB051022: host galaxy redshift
  91. GRB 051022: Swift/UVOT Upper Limits
  92. GRB051022: Radio Counterpart
  93. GRB051022: IR observations
  94. GRB 051022: SOAR JKs Observations
  95. GRB051021A: Swift XRT refined analysis
  96. Konus-Wind observation of GRB 051022
  97. GRB051022: Optical Observations
  98. GRB 051022: Magellan NIR imaging
  99. GRB 051021: PROMPT RcIc Observations
  100. GRB051021b: Magellan IR Imaging

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