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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"

28296 results found.

  1. GRB 171209A: Swift/UVOT Analysis of the burst
  2. GRB 171209A: Swift-XRT refined Analysis
  3. GRB 171209A: Enhanced Swift-XRT position
  4. Swift Trigger 796115 is probably not a GRB
  5. GRB 171205A: UKIRT near-IR observations
  6. GRB 171209A: LCO 1-m telescope observations
  7. GRB 171120A CALET Gamma-Ray Burst Monitor detection
  8. LIGO/Virgo G298048: Brightening X-ray Emission from GW170817/GRB170817A/SSS17a
  9. GRB 171205A: TSHAO optical observations
  10. LIGO/Virgo GW170817: Chandra X-ray brightening of the counterpart 108 days since merger
  11. LIGO/Virgo G298048: Late-time detection of the X-ray afterglow with Chandra
  12. GRB 171205A: GROND observations of the optical/NIR transient
  13. GRB 171205A: LCO 1-m telescope observations
  14. GRB171205A hyperluminal radio afterglow?
  15. GRB 171205A: GMG observations (2nd night)
  16. GRB 171205A: Host galaxy photometric properties
  17. GRB 171205A: CHILESCOPE optical observations
  18. GRB 171205A: SMARTS optical/IR afterglow observations
  19. GRB 171205A: GOTO detection of the optical counterpart
  20. GRB 171205A: TNG NIR detections
  21. GRB 171205A: LSGT optical afterglow follow-up observation
  22. GRB 171205A: GMG observation
  23. GRB 171205A: Swift-BAT refined analysis
  24. GRB 171205A: Swift-XRT refined Analysis
  25. GRB 171205A: RATIR Optical and NIR Observations
  26. GRB 171205A: Swift/UVOT Detection
  27. GRB 171205A: VLT/X-shooter optical counterpart and spectroscopic observations
  28. GRB 171205A: Enhanced Swift-XRT position
  29. GRB 171205A: Swift detection of a burst
  30. GRB 171124A: TShAO optical observations
  31. GRB 171124A: Swift-XRT afterglow detection
  32. Pan-STARRS follow-up of IceCube-171106A
  33. LIGO/Virgo G299232: LOFAR follow-up
  34. GRB 171124A: Insight-HXMT/HE detection
  35. GRB 171126A: Fermi GBM detection
  36. GRB 171123A: TShAO optical upper limit
  37. GRB 171123A: OSN Upper Limit
  38. GRB 171124A: Swift-XRT observations
  39. GRB 171124A: Fermi GBM observation
  40. GRB 171123A: Tautenburg observations
  41. GRB 171123A: Nanshan-1m optical upper limit
  42. GRB 171123A: RATIR Optical and NIR Observations
  43. GRB 171123A: Swift/UVOT Upper Limits
  44. GRB 171123A: GMG observation limit
  45. GRB 171123A: Swift-BAT refined analysis
  46. GRB 171123A: Swift-XRT refined Analysis
  47. GRB 171123A: Confirmation of the X-ray afterglow
  48. GRB 171123A: Enhanced Swift-XRT position
  49. GRB 171123A: Swift detection of a burst
  50. GRB 171120A: Xinglong-2.16m optical upper limit
  51. GRB 171120A: Swift/UVOT Upper Limits
  52. GRB 171120A: Swift-BAT refined analysis
  53. GRB 171120A: Fermi GBM Detection
  54. GRB 171120A: Swift-XRT refined Analysis
  55. GRB 171120A: Enhanced Swift-XRT position
  56. GRB 171120A: Swift detection of a burst
  57. Fermi-LAT Gamma-ray Observations of IceCube-171106A
  58. GRB 171115A: RATIR Optical and NIR Observations
  59. GRB 171115A: Swift-BAT refined analysis
  60. GRB 171115A: Swift-XRT refined Analysis
  61. GRB 171115A: Enhanced Swift-XRT position
  62. GRB 171115A: Swift detection of a burst
  63. GRB 171112A: Fermi GBM Detection
  64. GRB 171112A: MAXI/GSC detection
  65. IPN Triangulation of GRB 171108A (short)
  66. IceCube-171106A: Swift Observations
  67. HAWC follow-up of IceCube-171106A
  68. GRB 171010A: afterglow and SN 2017htp optical observations
  69. GRB 171108A: Fermi GBM detection
  70. GRB 171101A CALET Gamma-Ray Burst Monitor detection
  71. INTEGRAL observation of IceCube-171106A
  72. GRB 171010A: possible SN component
  73. IceCube-171106A - IceCube observation of a high-energy neutrino candidate
  74. GRB 171030A: MASTER inspection of the IPN error box of the short GRB.
  75. GRB 171103A: Swift-BAT refined analysis of a short GRB
  76. GRB 171103A: Swift detection of a short hard burst
  77. Konus-Wind observation of GRB 171102A
  78. GRB 171102B: AbAO optical upper limit
  79. GRB 171102B: TShAO optical upper limit
  80. IPN Triangulation of GRB 171102A
  81. GRB 171102B: Nanshan 0.36m and 0.60m optical upper limits
  82. GRB 171102B: RATIR Optical and NIR Observations
  83. GRB 171102B: Swift-BAT refined analysis
  84. GRB 171102B: Swift/UVOT Upper Limits
  85. GRB 171102B: Swift-XRT refined Analysis
  86. GRB 171102B: Enhanced Swift-XRT position
  87. GRB 171102A: Fermi GBM detection
  88. GRB 171102B: Swift detection of a burst
  89. GRB 171030A: Swift non-localization with BAT, XRT and UVOT
  90. IPN Triangulation of GRB 171030A (short)
  91. Swift Trigger 783893: KAIT Optical Observations
  92. Swift Triggers 784159 and 784160 are not bursts
  93. Konus-Wind observation of GRB 171027A
  94. Swift Trigger 783893: LCO 1-m telescope observations
  95. Swift Trigger 783893 is probably not a GRB
  96. GRB 171027A, Swift-BAT refined analysis
  97. GRB 171027A: Swift/UVOT Upper Limits
  98. GRB 171027A: Swift-XRT refined Analysis
  99. GRB 171027A: Enhanced Swift-XRT position
  100. GRB 171027A: RATIR Confirmation of Fading and Photo-z

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