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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"

45770 results found.

  1. IPN triangulation and Konus spectrum of the short/soft GRB051107 (large
  2. GRB051109B: no UVOT source detected
  3. GRB051109B: XRT refined analysis
  4. GRB 051109B : Lulin Optical Observations
  5. GRB 051109A : Lulin BVRI Optical afterglow observation
  6. GRB051109A: further steepening in the X-ray light curve
  7. GRB051109A: XRT refined analysis
  8. GRB 051109a: BOOTES R & I-band detection of the early afterglow
  9. GRB051109B: XRT position
  10. GRB 051109B: Super-LOTIS Observations
  11. GRB 051109B Kiso optical follow-up observation
  12. GRB051105B: REM Optical observation
  13. GRB 051109B: Swift detection of a burst
  14. GRB 051109: HET Optical Spectrum and Absorption Redshift
  15. GRB 051109: PROMPT Detections
  16. GRB 051109: Rc and Ic observations
  17. GRB051109: Early Super-LOTIS Detection
  18. GRB 051109: Swift-BAT refined analysis
  19. GRB 051109a: IR Photometry and Astrometry
  20. GRB 051109a: MDM Observations
  21. GRB 051109A: ROTSE-III Decline rate for Optical Counterpart
  22. GRB051109: Swift detection of a burst
  23. GRB 051109a: IR Detections
  24. GRB 051109: ROTSE-III Detection of Possible Counterpart
  25. GRB051105B: Swift/XRT upper limit
  26. GRB051105B: Swift/UVOT upper limit
  27. GRB051103: optical observations
  28. GRB 051103, optical observations
  29. GRB051103: MASTER: OT limit and host galaxy candidates
  30. GRB051028: Swift-XRT refined analysis
  31. GRB 051105a, observation from Naini Tal and OSN
  32. GRB 051105A, 2nd epoch optical observations
  33. GRB 051105a: MDM Observations
  34. GRB 051105A: TNG optical observations
  35. GRB051105A: Swift/UVOT Observations
  36. GRB 051105A, radio observations
  37. IPN triangulation and Konus spectrum of the bright short/hard GRB051103
  38. GRB 051105A, optical observations
  39. XRT observations of GRB 051105A
  40. GRB 051105: Swift-BAT improved refined analysis
  41. GRB 051105b: ART optical limits
  42. GRB051105B - A long GRB detected by INTEGRAL
  43. GRB 051105B (INTEGRAL 2701): Optical observation
  44. GRB 051105: Swift-BAT refined analysis
  45. GRB 051105: Optical limit
  46. GRB 051105: Swift detection of a short burst
  47. IBAS Alert 2700: Not a GRB
  48. GRB 051016B host spectroscopy and redshift
  49. GRB051016B: optical observation
  50. Recent GRB UBVRcIc field photometry
  51. Konus-Wind observation of GRB 051028
  52. GRB 051022: RTT150 optical observations
  53. GRB051028 SARA Observation
  54. GRB051028: optical observations
  55. GRB051028: Swift/UVOT upper limits
  56. GRB051028: confirmation of the afterglow
  57. GRB051028: WHT optical candidate
  58. GRB051028: Swift XRT Position
  59. GRB051028:MASTER observations
  60. GRB 051028 (=H3951): A GRB localized by HETE
  61. GRB 051022: XRT Refined Spectral and Temporal Analysis--Correction
  62. GRB051022: Swift XRT measurement of jet break
  63. SGR 1806-20: continued moderate activity seen with INTEGRAL
  64. GRB051021B: Swift/UVOT Upper limits
  65. GRB 051021, Optical Observations
  66. GRB 051022: XRT Refined Spectral and Temporal Analysis
  67. GRB 051022, refined optical astrometry
  68. Chandra Observations of GRB 051022
  69. GRB051012: Swift-XRT analysis
  70. GRB 051022 Chandra Observations scheduled
  71. GRB051021B: Swift XRT refined analysis
  72. GRB051021a: optical observations
  73. GRB 051022: WSRT Radio Detection
  74. GRB 051022, mm counterpart
  75. GRB051022: host galaxy redshift
  76. GRB 051022: Swift/UVOT Upper Limits
  77. GRB051022: Radio Counterpart
  78. GRB051022: IR observations
  79. GRB 051022: SOAR JKs Observations
  80. GRB051021A: Swift XRT refined analysis
  81. Konus-Wind observation of GRB 051022
  82. GRB051022: Optical Observations
  83. GRB 051022: Magellan NIR imaging
  84. GRB 051021: PROMPT RcIc Observations
  85. GRB051021b: Magellan IR Imaging
  86. GRB 051022: Spectral Analysis Indicates That The Spectrum Is Absorbed
  87. GRB 051021: Correction
  88. GRB 051021, SMARTS optical/IR observations
  89. GRB051022: Swift XRT Position
  90. GRB 051021: P200 Ks Observations
  91. IPN triangulation of GRB051022 (=H3950)
  92. GRB 051021: MDM Upper Limit
  93. GRB 051022 (=H3950): SXC Flight Localization is Valid
  94. GRB051021: Swift/UVOT Upper Limits
  95. GRB 051021B: Refined analysis of the Swift-BAT burst
  96. GRB 051022: SSO40 Optical Observations
  97. GRB051022,optical observation
  98. GRB 051022A: ROTSE-III Optical Limits
  99. GRB051022 (=H3590), A GRB Detected By HETE
  100. GRB 051022: Optical observations

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