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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. 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"

19607 results found.

  1. IceCube-171106A: Swift Observations
  2. GRB 171010A: afterglow and SN 2017htp optical observations
  3. Fermi-GBM Trigger 531686417 / 171106778 is not related to ICECUBE-171106A
  4. GRB 171103A: AstroSat CZTI detection
  5. GRB 171030A: MASTER inspection of the IPN error box of the short GRB.
  6. Konus-Wind observation of GRB 171103A (short/hard)
  7. GRB 171103A: Fermi GBM observation
  8. GRB 171103A: Swift-BAT refined analysis of a short GRB
  9. Fermi GBM detections of Swift J0243.6+6124 and modification of the GBM trigger configuration
  10. GRB 171103A: Swift detection of a short hard burst
  11. GRB 171102B: AbAO optical upper limit
  12. GRB 171102B: TShAO optical upper limit
  13. IPN Triangulation of GRB 171102A
  14. GRB 171102B: RATIR Optical and NIR Observations
  15. GRB 171102B: Swift-BAT refined analysis
  16. GRB 171102B: Swift/UVOT Upper Limits
  17. GRB 171102B: Swift-XRT refined Analysis
  18. GRB 171102B: Enhanced Swift-XRT position
  19. GRB 171102B: Swift detection of a burst
  20. GRB 171102A: Fermi-LAT detection
  21. GRB 171030A: IPN error box through NSs probability merging rate map
  22. GRB 171030A: Fermi GBM detection
  23. GRB 171030A: Swift non-localization with BAT, XRT and UVOT
  24. GRB 171030A: Swift ToO observations
  25. IPN Triangulation of GRB 171030A (short)
  26. Fermi-GBM triggers due to Swift J0243.6+6124
  27. Swift Trigger 783893: KAIT Optical Observations
  28. GRB 171027A: KAIT Optical Upper Limit
  29. Swift Triggers 784159 and 784160 are not bursts
  30. Konus-Wind observation of GRB 171027A
  31. AMI-LA observations of the new Be X-ray binary Swift J0243.6+6124
  32. Swift Trigger 783893: LCO 1-m telescope observations
  33. Swift Trigger 783893 is probably not a GRB
  34. GRB 171027A, Swift-BAT refined analysis
  35. GRB 171027A: Swift/UVOT Upper Limits
  36. GRB 171027A: Swift-XRT refined Analysis
  37. GRB 171027A: Enhanced Swift-XRT position
  38. GRB 171027A: LCO 1-m telescope observations
  39. GROND observations of GRB 171027A: correction
  40. GRB 171027A: RATIR Detection of a NIR Afterglow Candidate
  41. GROND observations of GRB 171027A
  42. GRB 171027A: MASTER-OAFA (Argentina) early prompt optical observations
  43. GRB 171027A: Prompt enhanced Swift-XRT position
  44. GRB 171027A: Swift detection of a burst
  45. Swift trigger 781740: Further analysis from Swift and Fermi/GBM
  46. Numerous Fermi-GBM Subthreshold Notices are due to Swift J0243.6+6
  47. GRB 171022A: Fermi-LAT detection
  48. Swift Trigger 781740 is not a burst
  49. GRB 171020A: TAROT Calern observatory optical observations
  50. GRB 171020A: Swift/UVOT Upper Limits
  51. GRB 171020A: Swift-BAT refined analysis
  52. GRB 171020A: Swift-XRT refined Analysis
  53. GRB 171020A: Enhanced Swift-XRT position
  54. GRB 171020A: LT observations
  55. GRB 171020A: Mini-MegaTORTORA upper limits on simultaneous optical emission
  56. GRB 171020A: Swift detection of a burst
  57. Fermi-GBM Detection of possible burst from AXP CXOU J164710.2-455216/PSR J1647-4552
  58. Trigger 780207: Swift triggers again on AXP CXOU J164710.2-455216/PSR J1647-4552
  59. Swift Trigger on AXP CXOU J164710.2-455216/PSR J1647-4552
  60. GRB 171010B: Swift-XRT afterglow detection
  61. Trigger 779762: Swift detection of Vela X-1
  62. Trigger 779351: Swift detection of Swift J0243.6+6124
  63. Swift trigger 779171 is probably a noise fluctuation
  64. GRB 171010A: VLA Detection
  65. BAT trigger 778435 is not a GRB.
  66. GRB 171010B: Swift-XRT observations
  67. GRB 171013A: TAROT Calern observatory optical observations
  68. GRB 171013A: Swift detection of a possible burst
  69. GRB 171011A: Swift-BAT refined analysis
  70. GRB 171010A: Swift/UVOT Detection
  71. GRB 171010B: Fermi GBM detection
  72. IPN Triangulation of GRB 171011B (long/very bright)
  73. GRB 171010B: Swift ToO observations
  74. GRB 171011A: TAROT Calern observatory optical observations
  75. GRB 171010B: Swift detection of a burst
  76. GRB 171011A: MASTER-SAAO optical observations
  77. GRB 171011A: Swift detection of a burst
  78. GRB 171010A: Fermi GBM observation
  79. GRB 171010A: LCO 1m telescope observations
  80. GRB 171010A: Swift-XRT afterglow detection
  81. GRB 171010A: OT, spectrum, and possible host galaxy
  82. GRB 171010A: Swift ToO observations
  83. GRB 171010A: Fermi-LAT detection
  84. GRB 171007A: Swift/UVOT Upper Limits
  85. GRB 171007A: Swift-BAT refined analysis
  86. GRB 171007A: Fermi GBM observation
  87. GRB 171007A: Enhanced Swift-XRT position
  88. GRB 171007A: Swift-XRT refined Analysis
  89. GRB 171007A: RATIR Optical and NIR Observations
  90. GRB 171007A: Swift detection of a burst
  91. GRB 171004A: Swift/UVOT Upper Limits
  92. GRB 171004A: Swift-BAT refined analysis
  93. GRB 171004A: Swift-XRT refined Analysis
  94. GRB 171004A: Enhanced Swift-XRT position
  95. LIGO/Virgo G299232: SWASP optical imaging coverage
  96. GRB 171004A: RATIR Optical and NIR Observations
  97. GRB 171004A: Swift detection of a burst
  98. GRB 171003A: Enhanced Swift-XRT position
  99. LIGO/Virgo G299232: MAGIC Cherenkov Telescopes observations
  100. Swift Trigger 775946 is a Galactic transient, not GRB 171003

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