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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"

32772 results found.

  1. GRB 070309: variability of the XRT afterglow candidate
  2. GRB 070311: MDM Optical Follow-up
  3. GRB 070311: RAPTOR Detection of Optical Emission
  4. GRB070311: FRAM early follow-up limit
  5. GRB 070311: P60 Observations
  6. GRB 070311: MDM Optical Detection
  7. GRB 070311: Swift/UVOT Upper Limits
  8. GRB 070311: MITSuME Okayama Optical Observation
  9. GRB 070311: Swift-XRT refined analysis
  10. GRB 070311: PAIRITEL confirmation of variability of REM candidate
  11. GRB 070311: REM candidate afterglow
  12. GRB060901: Candidate optical afterglow
  13. GRB070309: Swift/XRT possible afterglow detection
  14. GRB 070125: Chandra X-ray Confirmation of Jet Break
  15. GRB 070309: Swift/UVOT Upper Limits
  16. GRB 070306, optical observation
  17. Swift UVOT Finding Charts for GRB 070309
  18. GRB 070125: X-ray light curve analysis
  19. VLA observation of GRB 070306
  20. GRB 070306: NOT observations
  21. GRB 070306 Swift/UVOT refined analysis
  22. GRB070306: confirmation of near infrared afterglow
  23. GRB 070306: ART-3 early optical and near infrared constraints
  24. GRB 070306, Swift-BAT refined analysis
  25. GRB 070306: XRT Team Refined Analysis
  26. GRB 070306: Optical and IR observations with KANATA
  27. GRB 070223: NIR observations at WHT
  28. GRB070227: Swift-XRT refined analysis
  29. GRB 060605 new redshift
  30. GRB 070125, deep late-time optical observation
  31. VLA observation of GRB 070224
  32. GRB 070223: Optical Observations
  33. GRB 070227: optical observations
  34. GRB 070227: Swift/UVOT Upper Limits
  35. GRB 070227, Swift-BAT refined analysis
  36. GRB070227: possible X-ray afterglow detection
  37. GRB 070224: Optical afterglow confirmation
  38. GRB 070224: Swift/UVOT Upper Limits
  39. GRB070224: Swift-XRT Astrometrically Corrected Position
  40. VLA observation of GRB 070223
  41. VLA observation of GRB 070220
  42. GRB070224: Magellan Imaging Observations
  43. GRB 070224: WHT K-band imaging
  44. GRB 070224: MDM Observations
  45. GRB070224: Gemini Imaging Observations
  46. GRB070224: Swift-XRT Refined Analysis
  47. GRB 070224: optical afterglow candidate
  48. GRB 070224, Swift-BAT refined analysis
  49. GRB 070224: MASTER-Net refind analysis
  50. GRB 070224: MASTER-VWF-Kislovodsk observations
  51. GRB 070223: Optical observations
  52. RHESSI Spectrum of GRB070220
  53. GRB070223: Swift/UVOT refined analysis
  54. GRB 070223: Optical-IR observation with KANATA
  55. GRB 070223, Swift-BAT refined analysis
  56. GRB070223: MASTER-VWF-Kislovodsk observations
  57. GRB 070223: Swift-XRT Refined Analysis
  58. GRB070223 - SDSS Pre-Burst Observations
  59. GRB 070223: Liverpool Telescope Possible Afterglow Candidate
  60. GRB 070223: MDM Observations
  61. Konus-Wind and Konus-A observations of GRB 070220
  62. GRB 070220: MITSuME Okayama Optical Observation
  63. GRB 070220: ART-3 Optical and NIR limits
  64. GRB 070220 Swift-BAT Refined Analysis
  65. Swift/UVOT refined analysis of GRB070220
  66. GRB 070209: Swift XRT refined analysis
  67. GRB 070220: Swift-XRT Refined Analysis
  68. GRB 070220: Observation with the KANATA 1.5m telescope
  69. GRB 070219: Gemini Observations
  70. GRB 070220 : Faulkes Telescope North optical limit
  71. GRB070219: MASTER-VWF-Kislovodsk observations
  72. GRB 070219: XRT Refined Analysis
  73. GRB 070219: Swift/UVOT Upper limits
  74. GRB 070219: I-band observations
  75. GRB 070219, Swift-BAT refined analysis
  76. GRB 070219: optical TNG observations
  77. GRB 070219: Liverpool Telescope Observations
  78. GRB 070219: ROTSE-III Optical Limits
  79. IPN triangulation of GRB070201 (refined error box using MESSENGER data)
  80. GRB 070125 observations with the GMRT
  81. GRB 070209: Redshift of a galaxy in the error circle of XRT source
  82. GRB 060927: PROMPT Observations
  83. GRB 070201: Correction to GCN 6094
  84. GRB 070125: Break in Optical Decay
  85. GRB 070209: Swift XRT analysis
  86. GRB 070201: clarification on localization and Konus-Wind spectra
  87. GRB070208: optical observations
  88. GRB 070201: IPN constraints and nearby galaxies
  89. GRB 070201: Proximity of IPN annulus to M31
  90. GRB 070208: MARGE Optical Observations
  91. GRB 070209, Swift-BAT refined analysis of the short hard burst
  92. GRB 070208: Swift XRT refined analysis
  93. GRB 070208: RAPTOR detection of early afterglow onset
  94. GRB070208: Absorption and emission redshift from Gemini
  95. GRB 070208: MDM Optical Decay
  96. GRB 070208, Swift-BAT refined analysis
  97. GRB070208 - SDSS Pre-Burst Observations
  98. GRB 070208: Early IR detection and afterglow astrometry
  99. GRB 070208: Afterglow confirmation from P60
  100. GRB070208: Faulkes Telescope North Afterglow Identification

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