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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.

"200205A/SWIFT J0840.7-3516" does not adhere to advanced search syntax. Please refer to the documentation and try again.
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"

19666 results found.

  1. GRB 210403A: Swift-BAT refined analysis
  2. GRB 210402A: LBT observations
  3. GRB 210402A: DDOTI Upper Limits
  4. Swift GRB210403.35: Global MASTER-Net observations report
  5. GRB 210402A: Swift-XRT refined Analysis
  6. GRB 210403A: Swift detection of a burst
  7. GRB 210402A: Montarrenti Observatory upper limit
  8. GRB 210402A: Swift detection of a burst
  9. Swift GRB210402.92: Global MASTER-Net observations report
  10. GRB 210323A: Insight-HXMT/HE detection
  11. GRB 210321A: OSN Upper Limit
  12. GRB 210323A: MASTER optical observation
  13. GRB 210323A: Swift-BAT refined analysis
  14. GRB 210323A: Gemini-North Optical Source Detection
  15. Short GRB 210323A: GTC Observations
  16. GRB 210323B: Swift ToO observations
  17. Konus-Wind detection of GRB 210323A (short)
  18. GRB 210323A: Swift/UVOT Upper Limits
  19. GRB 210323A: Kitab optical upper limit
  20. GRB 210323A: Fermi GBM detection
  21. GRB 210318A: Swift/UVOT Upper Limits
  22. GRB 210323A: Swift-XRT refined Analysis
  23. GRB 210323A: Enhanced Swift-XRT position
  24. Swift GRB 210323A: Global MASTER-Net observations report
  25. GRB 210323B: Swift/BAT-GUANO detection and possible arcminute localization
  26. GRB 210323A: Swift detection of a short burst
  27. GRB 210321A: Swift/UVOT Detection
  28. Konus-Wind detection of GRB 210321A
  29. GRB 210318B: Swift/UVOT Upper Limits
  30. GRB 210321A: Swift-BAT refined analysis
  31. IceCube 135113_19489408.amon: Swift-XRT observations
  32. GRB 210321A: Swift-XRT refined Analysis
  33. GRB 210321A: NOT optical afterglow detection and redshift limit
  34. GRB 210321A: MASTER optical observation
  35. GRB 210321A: Enhanced Swift-XRT position
  36. GRB 210321A: DDOTI Afterglow Confirmation
  37. GRB 210321A: Swift/UVOT Detection
  38. GRB 210321A: Swift-XRT observations
  39. GRB 210321A: Swift detection of a burst
  40. GRB 210318B: MITSuME Okayama optical upper limits
  41. GRB 210318A: Swift-BAT refined analysis
  42. GRB 210318A: Swift-XRT refined Analysis
  43. GRB 210318A: Enhanced Swift-XRT position
  44. Swift GRB210318.13: Global MASTER-Net observations report
  45. GRB 210318B: Fermi GBM detection
  46. GRB 210318B: Swift-BAT refined analysis
  47. Swift GRB 210318A: Global MASTER-Net observations report
  48. Konus-Wind detection of GRB 210318B
  49. GRB210318B: Swift detection of a burst
  50. GRB 210318A: Swift detection of a burst
  51. GRB 210306A: GIT optical follow-up
  52. GRB 210226A: GIT optical upper limit
  53. GRB 210306A: HCT optical upper limit
  54. Konus-Wind detection of GRB 210308A
  55. Konus-Wind detection of GRB 210306A
  56. Konus-Wind detection of GRB 210305A
  57. GRB 210306A: Early Spectroscopy of the Optical Afterglow
  58. GRB 210306B: Fermi GBM detection
  59. GRB 210306A: Swift/UVOT Detection
  60. GRB 210308A: Swift-BAT refined analysis
  61. GRB 210307A: Swift-BAT refined analysis
  62. GRB 210308A: Swift/UVOT Detection
  63. GRB 210307A: Swift/UVOT Upper Limits
  64. GRB 210305A: Fermi GBM observation
  65. Swift GRB 210308A: Global MASTER-Net observations report
  66. GRB 210308A: Fermi GBM detection
  67. GRB 210305A: Swift-XRT refined Analysis
  68. GRB 210307A: Swift-XRT refined Analysis
  69. GRB 210306A: Swift-XRT refined Analysis
  70. GRB 210308A: MITSuME Okayama optical upper limits
  71. GRB 210308A: Swift detection of a burst with an optical counterpart
  72. GRB 210306A: Swift-BAT refined analysis
  73. GRB 210305A: Swift/UVOT Upper Limits
  74. GRB 210307A: LCO Optical Upper Limits
  75. GRB 210306B: Swift-BAT refined analysis
  76. GRB 210305A: Swift-BAT refined analysis
  77. GRB 210307A: Swift detection of a burst
  78. Swift GRB210307.36: Global MASTER-Net observations report
  79. GRB 210306A: MITSuME Akeno optical observation
  80. Swift GRB 210306A: Global MASTER-Net observations report
  81. GRB 210306A: Fermi GBM observation
  82. GRB 210306A: Fermi-LAT detection
  83. GRB 210306B: Swift detection of a burst
  84. GRB 210306A: LCO Optical Afterglow Detection
  85. GRB 210306A: DDOTI Afterglow Confirmation
  86. GRB 210306A: Swift detection of a burst with a bright optical counterpart
  87. Swift GRB 210305A: Global MASTER-Net observations report
  88. GRB 210305A: Swift detection of a burst
  89. Trigger 1035744: Swift detection of Sco X-1 due to Star Tracker loss of lock
  90. GRB 210226A: Swift/UVOT Upper Limits
  91. GRB 210226A: Swift-BAT refined analysis
  92. GRB 210226A: Fermi GBM detection
  93. GRB 210226A: KAIT Optical Upper Limit
  94. GRB 210226A: Swift-XRT refined Analysis
  95. Swift GRB 210226A: Global MASTER-Net observations report
  96. GRB 210218A: Swift-XRT confirmation of afterglow
  97. GRB 210226A: Enhanced Swift-XRT position
  98. GRB 210222B: 1.3m DFOT Optical upper limit
  99. GRB 210226A: Swift detection of a burst
  100. GRB 210222B: MITSuME Akeno optical upper limits

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