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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"

19670 results found.

  1. GRB 130305A: P60 Observations
  2. GRB 100615A: HST host detection and X-shooter redshift
  3. GRB 130305A: Swift/XRT detection of the afterglow
  4. Konus-Wind observation of GRB 130305A
  5. GRB 130305A: Fermi GBM observation
  6. GRB 130305A: Fermi LAT Detection
  7. GRB 130305A found in ground analysis of Swift/BAT data
  8. GRB 121128A: optical upper limit in Maidanak observatory
  9. GRB 130216A: Swift/UVOT Upper Limit
  10. GRB 130219A: Suzaku WAM observation of the prompt emission
  11. SGR 1806-20 outburst (trigger 549841), Swift-BAT refined analysis
  12. Trigger 549841: Swift detection of SGR1806-20
  13. GRB 130216B: Suzaku WAM observation of the prompt emission
  14. GRB 130216A: possible radio counterpart is steady field source
  15. GRB 130216A: Swift/XRT observations
  16. IPN Triangulation of GRB 130219A
  17. GRB 130215A: Suzaku WAM observation of the prompt emission
  18. GRB 130215A: PTF P48 optical detection
  19. GRB 130216B: Swift/XRT observations
  20. GRB 130216A: Further Swift-BAT refined analysis
  21. GRB 130216B: MASTER-Net early observation
  22. GRB 130216A: MASTER-Net early observations
  23. GRB 130216A: Fermi GBM observation
  24. GRB 130216B: Fermi GBM observation
  25. GRB 130216B BAT refined analysis
  26. GRB 130216A: Swift-BAT refined analysis
  27. GRB 130216A: TAROT La Silla observatory optical observations
  28. GRB 130216B: Burst found in ground analysis of BAT data
  29. GRB 130216A: OSN I-band observations
  30. GRB 130216A: Swift detection of a burst
  31. GRB 130215A: GROND Detection of the Optical/NIR Afterglow
  32. GRB 130215A: Fermi GBM detection
  33. GRB 130215A: RAPTOR Measurements
  34. GRB 130215A: Swift-BAT refined analysis
  35. GRB 130215A: TAROT La Silla observatory optical observations
  36. GRB 130215A: P60 Observations
  37. GRB 130215A: ROTSE-III data analysis
  38. Skynet Observations of GRB130215
  39. GRB 130215: ROTSE-III Detection of Optical Counterpart
  40. GRB 130215A: Swift detection of a burst
  41. Swift GRB130206A: late XRT observations.
  42. GRB 130131B: CTIO 0.9-m optical upper-limits
  43. GRB 121128A: optical observations
  44. GRB 121123A: optical observations
  45. GRB 130211A: Swift/UVOT Upper Limits
  46. GRB 130211A: Swift-XRT refined Analysis
  47. GRB 130211A: Swift-BAT refined analysis
  48. GRB 130211A: GROND detection of the afterglow
  49. GRB 130211A: Swift detection of a burst
  50. GRB 130122A: PTF P48 optical upper limits
  51. GRB 130206A: GROND Observations
  52. GRB 130206A: Fermi LAT Observations
  53. GRB 130206A: Fermi GBM observation
  54. GRB 130206A: XRT and UVOT follow-up observations.
  55. GRB 130131B: optical upper limit in Mondy observatory
  56. GRB 130206A, Swift-BAT refined analysis
  57. GRB 130206A: Zadko observatory - Gingin optical observations
  58. Swift GRB 130206A - analysis of Swift/UVOT initial data.
  59. GRB 130206A: Swift-XRT observations
  60. GRB 130131A: optical observation in Mondy observatory
  61. GRB 130206A: Swift detection of a burst
  62. GRB 130131A: Swift/UVOT Upper Limits
  63. GRB 130131A: RAPTOR Limits During Gamma-Ray Emitting Interval
  64. GRB 130131B: Swift-XRT refined Analysis
  65. GRB 130131B: VLT/X-shooter acquisition camera limits
  66. GRB 130131B: GROND Upper limits
  67. GRB 130131A: CARMA 3mm Observations
  68. GRB 130131A: VLA 5.8 Ghz Detection
  69. GRB 130131B: IAC80 I-band observations
  70. GRB 130131B: Swift/UVOT Upper Limits
  71. GRB 130131A: Swift-XRT refined Analysis
  72. GRB 130131B: Enhanced Swift-XRT position
  73. GRB 130131B: Swift-BAT refined analysis
  74. GRB 130131A: Swift-BAT refined analysis
  75. GRB 130131B: TAROT Calern observatory optical observations
  76. GRB 130131B: Zadko observatory - Gingin optical observations
  77. GRB 130131A: Enhanced Swift-XRT position
  78. GRB 130131B: Swift detection of a burst
  79. GRB 130131A - Faulkes Telescope North Observations
  80. GRB 130131A: Swift detection of a burst
  81. Swift/BAT trigger 547142 is new source Swift J1753.7-2544
  82. Swift Trigger 547142: MAXI/GSC upper limit
  83. Swift Trigger 547142: a probable Galactic source
  84. GRB 130122A: CARMA 3mm Observations
  85. GRB 130122A: Swift/UVOT Detection
  86. GRB 130122A: Swift-BAT refined analysis
  87. GRB 130122A: Swift-XRT refined Analysis
  88. GRB 130122A: Enhanced Swift-XRT position
  89. GRB 130122A: MASTER-Net early marginal detection of the OT
  90. GRB 130122A: T100 observations
  91. GRB 130122A: Swift detection of a burst with an optical counterpart
  92. GRB 121225B: Suzaku WAM observation of the prompt emission
  93. GRB 130102A: Swift/UVOT Upper Limits
  94. GRB 130102A: P60 Observations
  95. GRB 130102A: Swift-BAT refined analysis
  96. GRB 130102A: MASTER-Net optical observations
  97. GRB 130102A: Swift-XRT refined Analysis
  98. GRB 130102A: Enhanced Swift-XRT position
  99. GRB 130102A: IAC80 I-band observations
  100. GRB 130102A: Swift detection of a burst

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