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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. LIGO/Virgo S200115j High Rank XRT sources are spurious
  2. GRB 200115A: MITSuME Okayama optical upper limits
  3. GRB 200115A: Nanshan-0.6m optical upper limit
  4. GRB 200115A: Swift detection of a burst
  5. Swift GRB200115.49: Global MASTER-Net observations report
  6. LIGO/Virgo S200114f: no counterpart candidates in the Swift/BAT observations
  7. LIGO/Virgo S200112r: Swift/BAT in the South Atlantic Anomaly
  8. GRB 200109A: Insight-HXMT/HE detection
  9. IceCube-200109A: Swift-XRT and UVoT Follow-up Observations
  10. ANTARES 200108A: No detection by Swift-XRT
  11. GRB 200107B: Swift/UVOT Observations
  12. GRB 200109A: Swift-BAT refined analysis
  13. Swift follow-up observations of IceCube-200107A: Identification of X-ray high state for 4FGL J0955.1+3551
  14. GRB 200109A: Swift/UVOT Upper Limits
  15. GRB 200109A: Fermi GBM observation
  16. GRB 200107B: Swift-XRT refined Analysis
  17. GRB 200109A: Swift-XRT refined Analysis
  18. GRB 200109A: Enhanced Swift-XRT position
  19. Swift GRB200109.07: Global MASTER-Net observations report
  20. GRB 200109A: Swift detection of a burst
  21. Swift GRB 200107B: Global MASTER-Net observations report
  22. GRB 200107B: Fermi GBM observation
  23. GRB 200107B: Swift-BAT refined analysis
  24. GRB 200107B: Swift detection of a burst
  25. Swift GRB200107.81: Global MASTER-Net OT detection
  26. Swift GRB200107.81: Global MASTER-Net observations report
  27. LIGO/Virgo S200105ae: no counterpart candidates in the Swift/BAT observations
  28. GRB 191228A: Early Optical Upper Limits from LCO
  29. GRB 191227A: Insight-HXMT/HE observation
  30. GRB 191221B: CALET Gamma-Ray Burst Monitor detection
  31. GRB 191228A: Mondy optical upper limit
  32. Konus-Wind observation of GRB 191227A
  33. IPN triangulation of GRB 191227B (short)
  34. GRB 191228A: Swift/UVOT Upper Limits
  35. GRB 191228A: Swift-XRT refined Analysis
  36. GRB 191227A: Swift-BAT refined analysis
  37. GRB 191228A: Swift-BAT refined analysis
  38. GRB 191228A: Enhanced Swift-XRT position
  39. GRB 191228A: Swift detection of a burst
  40. Swift GRB191228.00: Global MASTER-Net observations report
  41. GRB 191227A: Fermi GBM detection
  42. GRB 191227A: Marginal detection by Fermi-LAT
  43. Swift GRB191227A: Global MASTER-Net OT detection
  44. GRB 191227A: Swift detection of a burst
  45. Swift GRB191227.07: Global MASTER-Net observations report
  46. Swift Trigger 946234: further Swift analysis
  47. Swift GRB191226.25: Global MASTER-Net observations report
  48. Swift Triggers 946256 and 946257 are not a GRB
  49. Swift GRB191226.02: Global MASTER-Net observations report
  50. Swift Trigger 946234 is probably not a GRB
  51. Swift trigger 946234/GRB 191226.02 : MASTER obervation
  52. Konus-Wind observation of GRB 191221B
  53. GRB 191221B: Swift/UVOT Detection
  54. GRB 191221B: Insight-HXMT/HE detection
  55. GRB 191221B: AstroSat CZTI detection
  56. GRB 191221B: iTelescope optical observations
  57. GRB 191221B: Swift-BAT refined analysis
  58. GRB 191221B: Zadko observatory - Gingin optical observations
  59. GRB 191221B: LCO Optical Detection
  60. GRB 191221B: Swift-XRT refined Analysis
  61. LIGO/Virgo S191222n: no counterpart candidates in the Swift/BAT observations
  62. GRB 191221B: MASTER VWFC OT yearly detection
  63. GRB 191221B: VLT/X-shooter redshift
  64. GRB 191221B: Correction to GCN26551 - VIRT OT observation
  65. GRB 191221B: VIRT Optical Upper Limits
  66. GRB 191221B: AGILE/MCAL observations
  67. GRB 191221B: Enhanced Swift-XRT position
  68. GRB 191221B: Swift/UVOT redshift
  69. GRB 191221B: MASTER OT detection
  70. Swift GRB 191221B: Global MASTER-Net observations report
  71. GRB 191220A: Swift-BAT refined analysis
  72. GRB 191221B: Swift detection of a burst and a very bright optical candidate
  73. GRB 191220A: Swift/UVOT Upper Limits
  74. GRB 191220A: AbAO optical observations
  75. GRB 191220A: Swift-XRT refined Analysis
  76. GRB 191220A: Enhanced Swift-XRT position
  77. GRB 191220A: Swift detection of a burst
  78. GRB 191220A: Prompt enhanced Swift-XRT position
  79. Swift GRB191220.56: Global MASTER-Net observations report
  80. Konus-Wind observation of GRB 191218A
  81. LIGO/Virgo S191213g: Swift UVOT/XRT observations of Pan-STARRS1 candidate: PS19hgw
  82. LIGO/Virgo S191216ap, Swift XRT observations: 16 X-ray sources in the HAWC error region search
  83. GRB 191218A: Swift-BAT refined analysis
  84. Konus-Wind observation of GRB 191213A (ulong)
  85. GRB 191218A: AstroSat CZTI detection
  86. GRB 191218A: Swift detection of a burst
  87. LIGO/Virgo S191216ap and IceCube neutrino: Swift XRT sources
  88. LIGO/Virgo S191213g: Swift UVOT/XRT observations of three ZTF sources
  89. LIGO/Virgo S191216ap: no counterpart candidates in the Swift/BAT observations
  90. LIGO/Virgo S191215w: no counterpart candidates in the Swift/BAT observations
  91. GRB 191213A: BOOTES-5/JGT optical limit
  92. GRB 191213A: Swift-BAT refined analysis
  93. LIGO/Virgo S191213g: no counterpart candidates in the Swift/BAT observations
  94. GRB 191213A: Swift detection of a burst
  95. Possible HAWC-detected GRB 191210A: Swift-XRT observations
  96. LIGO/Virgo S191205ah: no counterpart candidates in the Swift/BAT observations
  97. LIGO/Virgo S191204r: no counterpart candidates in the Swift/BAT observations
  98. GRB 191130A: Swift-XRT observations
  99. GRB 191130A: Swift ToO observations
  100. GRB 191130A, a long burst detected in Swift-BAT ground analysis

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