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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"

19296 results found.

  1. GRB 060526: ROTSE-III Observations of Optical Counterpart
  2. GRB060526 - SDSS Pre-burst Observations
  3. GRB 060526: Swift detection of a burst with x-ray and optical afterglow
  4. GRB 060413 : WIDGET simultaneous optical observations
  5. XMM-Newton observation of GRB060510b
  6. GRB 060522: Swift-BAT Refined Analysis
  7. GRB 060515: NIR observation
  8. GRB 060210: Jet Break in the XRT light curve
  9. GRB 060516: Refined analysis of the Swift-BAT burst
  10. GRB 060505 BAT refined analysis
  11. GRB 060515 BAT refined analysis
  12. GRB 060512: TAROT optical observation
  13. GRB 060515: Swift/XRT Team refined analysis
  14. GRB060512: Swift XRT Team refined analysis
  15. GRB 060512: Swift-BAT Refined Analysis
  16. GRB 060505 - OT candidate + galaxy spectrum
  17. GRB060512 - SDSS Pre-Burst Observations
  18. GRB 060512: Swift detection of a burst with an optical afterglow
  19. Konus-Wind observation of GRB 060510A
  20. GRB 060428a, SMARTS optical/IR afterglow detection
  21. GRB060510B: Swift XRT refined analysis
  22. GRB 060510A: Refined analysis of the Swift-BAT burst
  23. GRB 060510B: Swift-BAT Refined Analysis
  24. GRB060510A: XRT refined analysis
  25. GRB 060510: Swift detection of a burst with optical transient
  26. GRB060502B: improvement in the XRT afterglow position
  27. GRB 060507: Final Refined analysis of the Swift-BAT burst
  28. GRB 060507: Swift-BAT Refined Analysis
  29. GRB 060507: Swift XRT Team Refined Analysis
  30. GRB 060507: MDM Optical Upper Limit
  31. GRB 060507: Swift detection of a burst
  32. GRB 060429: Suzaku WAM observation
  33. GRB060425: new MASTER survey method
  34. GRB 060306: Further Analysis of SOAR and APO NIR Observations
  35. GRB 060505: Swift-BAT detection of a weak burst
  36. GRB 060428B: spectroscopy
  37. GRB 060502B: MDM Optical Observation
  38. GRB 060502B: Refined analysis of the Swift-BAT short burst
  39. GRB060502B: Swift XRT Team refined analysis
  40. GRB060502B: correction to XRT position
  41. GRB060502: Swift-XRT refined analysis
  42. GRB 060502: Swift-BAT refined analysis
  43. GRB 060501: Refined analysis of the Swift-BAT burst
  44. GRB 060501: ROTSE-III Optical Limits
  45. GRB 060428B: MDM Observations
  46. GRB060428B: Swift XRT Team refined analysis
  47. GRB 060427B: IPN localization of a short hard burst
  48. GRB 060428B: Refined analysis of the Swift-BAT burst
  49. GRB 060428A: Refined analysis of the Swift-BAT burst
  50. GRB060428A: Swift XRT Team refined analysis
  51. GRB 060427: Refined analysis of the Swift-BAT burst
  52. GRB060427: Swift XRT Team refined analysis
  53. GRB060418: Swift XRT Team Further Refined Analysis
  54. GRB060425:MASTER survey observations
  55. GRB060418: Further Analysis of MIKE Spectroscopy
  56. GRB 060424: Refined analysis of the Swift-BAT burst
  57. GRB 060421: TTT Observations
  58. Swift-BAT detection of Mrk 421
  59. GRB060421: Swift/UVOT observations
  60. GRB 060421: Swift-BAT Refined Analysis
  61. GRB 060421: Swift-XRT refined analysis
  62. GRB 060418: prediction of t_break
  63. Erratum of GCN 4983 for GRB 060418 IR follow-up
  64. GRB 060418 : IR afterglow observations
  65. GRB060418, BVRcIc field calibration
  66. GRB060418: Optical Observations
  67. GRB 060418: Refined Analysis of the Swift-BAT burst
  68. GRB 060418, SMARTS continuing afterglow observations
  69. GRB 060418, SMARTS optical/IR afterglow observations
  70. GRB 060418: Swift detection of a burst with bright x-ray and optical afterglow
  71. GRB 060413: Refined analysis of the Swift-BAT burst
  72. GRB060403: Optical Limit
  73. GRB060403: XRT refined analysis
  74. SGR 1900+14: BAT observations
  75. GRB 060403: Refined analysis of the Swift-BAT burst
  76. Konus-Wind observation of the recent SGR 1900+14 activity. Will
  77. Swift XRT observations of the HETE transient H4043
  78. SGR 1900+14: bright burst detected by Konus-Wind on March 28
  79. INTEGRAL and XMM ToO observations of SGR1900+14
  80. SGR 1900+14: Swift-BAT detection of a bright outburst
  81. GRB 060323 : WIDGET simultaneous optical observations
  82. GRB060218, optical observations
  83. GRB 060323: Optical Observations
  84. GRB 060323: Tautenburg OT candidate retraction
  85. GRB 060323: Refined analysis of the Swift-BAT burst
  86. GRB 060323: BVRI observations at Tautenburg, aftreglow candidate
  87. GRB 060322: Refined analysis of the Swift-BAT burst
  88. GRB060323 - SDSS Pre-Burst Observations
  89. GRB 060323: Swift detection of a burst with a possible optical afterglow
  90. GRB 060322: Swift-BAT detection of a 200-sec burst
  91. GRB 060319: Swift-BAT refined analysis
  92. GRB060319 - SDSS Pre-burst Observations
  93. GRB 060313: Further analysis of the Swift-BAT bright short hard burst
  94. GRB 060313: Refined analysis of the Swift-BAT bright short hard burst
  95. GRB 060313, SMARTS optical counterpart?
  96. GRB060218: SARA Observations of SN2006aj
  97. GRB 060312: Refined analysis of the Swift-BAT burst
  98. GRB 060218/SN 2006aj, high resolution spectra
  99. GRB060306: APO Ks-band Imaging Observations
  100. GRB060219: Liverpool Telescope observations

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