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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"

15363 results found.

  1. GRB 171205A: Swift-BAT refined analysis
  2. GRB 171205A: RATIR Optical and NIR Observations
  3. GRB 171205A: VLT/X-shooter optical counterpart and spectroscopic observations
  4. GRB 171126A: AstroSat CZTI detection
  5. GRB 171124A: Swift-XRT afterglow detection
  6. Pan-STARRS follow-up of IceCube-171106A
  7. LIGO/Virgo G299232: LOFAR follow-up
  8. GRB 171124A: Insight-HXMT/HE detection
  9. GRB 171126A: Fermi GBM detection
  10. GRB 171124A: AstroSat CZTI detection
  11. INTEGRAL pointed follow-up of IceCube-171106A
  12. GRB 171123A: OSN Upper Limit
  13. GRB 171119A: AstroSat CZTI detection
  14. GRB 171124A: Fermi-LAT detection
  15. GRB 171124A: Swift ToO observations
  16. GRB 171123A: Confirmation of the X-ray afterglow
  17. GRB 171120A: Insight-HXMT detection
  18. Konus-Wind observation of GRB 171119A
  19. GRB 171120A: AstroSat CZTI detection
  20. Konus-Wind observation of GRB 171120A
  21. GRB 171120A: Fermi GBM Detection
  22. GRB 171120A: Fermi-LAT detection
  23. GRB 171115B: Insight-HXMT detection
  24. Fermi-LAT Gamma-ray Observations of IceCube-171106A
  25. GRB 171108B: Insight-HXMT detection
  26. GRB 171112A: Fermi GBM Detection
  27. Konus-Wind observation of GRB 171112A
  28. FACT follow-up of IceCube20171106
  29. Konus-Wind observation of GRB 171108A
  30. GRB 171103A: Insight-HXMT observation
  31. IceCube-171106A: Swift Observations
  32. HAWC follow-up of IceCube-171106A
  33. GRB 171108A: Fermi GBM detection
  34. INTEGRAL observation of IceCube-171106A
  35. Fermi-GBM Trigger 531686417 / 171106778 is not related to ICECUBE-171106A
  36. IceCube-171106A - IceCube observation of a high-energy neutrino candidate
  37. GRB 171103A: AstroSat CZTI detection
  38. Konus-Wind observation of GRB 171103A (short/hard)
  39. GRB 171103A: Fermi GBM observation
  40. Konus-Wind observation of GRB 171102A
  41. GRB 171102B: Nanshan 0.36m and 0.60m optical upper limits
  42. GRB 171102A: Fermi GBM detection
  43. GRB 171102A: Fermi-LAT detection
  44. GRB 171030A: Fermi GBM detection
  45. GRB 171030A: Swift ToO observations
  46. Fermi-GBM triggers due to Swift J0243.6+6124
  47. Swift Trigger 783893: KAIT Optical Observations
  48. Swift Triggers 784159 and 784160 are not bursts
  49. GRB 171022A: Fermi-LAT detection retraction
  50. Konus-Wind observation of GRB 171027A
  51. AMI-LA observations of the new Be X-ray binary Swift J0243.6+6124
  52. Retraction of high energy neutrino candidate IceCube-171028
  53. GRB 171027A: RATIR Confirmation of Fading and Photo-z
  54. GRB 171027A: VLT optical upper limits
  55. GROND observations of GRB 171027A: correction
  56. GRB 171027A: RATIR Detection of a NIR Afterglow Candidate
  57. Konus-Wind observation of GRB 171022A
  58. IPN Triangulation of GRB 171022A
  59. Swift trigger 781740: Further analysis from Swift and Fermi/GBM
  60. Numerous Fermi-GBM Subthreshold Notices are due to Swift J0243.6+6
  61. GRB 171022A: Fermi GBM detection
  62. GRB 171022A: Fermi-LAT detection
  63. GRB 171020A: Correction of alpha in GCN 22031
  64. GRB 171020A: Mini-MegaTORTORA upper limits on simultaneous optical emission
  65. Fermi-GBM Detection of possible burst from AXP CXOU J164710.2-455216/PSR J1647-4552
  66. GRB 171011B: Insight-HXMT detection
  67. Swift Trigger on AXP CXOU J164710.2-455216/PSR J1647-4552
  68. GRB 171010B: Swift-XRT afterglow detection
  69. Search for counterpart to IceCube-171015A with ANTARES
  70. INTEGRAL SPI-ACS observation of IceCube-171015A
  71. IceCube-171015A - IceCube observation of a high-energy neutrino candidate event
  72. GRB 171010A: VLA Observations
  73. GRB 171010A: RATIR Optical and NIR Observations
  74. Konus-Wind observation of GRB 171011B
  75. Konus-Wind observation of GRB 171010A
  76. GRB 171010A: ePESSTO NTT spectroscopic redshift
  77. GRB 171010A: MITSuME Akeno Optical Observation
  78. GRB 171010B: Swift ToO observations
  79. GRB 171010A: Fermi GBM observation
  80. GRB171010A: AstroSat CZTI detection
  81. GRB 171010A: optical observations
  82. GRB 171010A: Swift ToO observations
  83. GRB 171010A: Fermi-LAT detection
  84. LIGO/Virgo G298048: LWA radio observations
  85. GRB 171004A: Correction to RATIR Astrometry and Photometry
  86. LIGO/Virgo G299232: SWASP optical imaging coverage
  87. LIGO/Virgo G299232: MAGIC Cherenkov Telescopes observations
  88. Swift Trigger 775946 is a Galactic transient, not GRB 171003
  89. LIGO/Virgo G299232: LOFAR follow-up
  90. GRB 171001A: Nanshan-0.36m optical afterglow detections
  91. Further Swift-XRT observations of IceCube 170922A
  92. LIGO/Virgo G298048: Record of all e-MERLIN results to date on SSS17a
  93. LIGO/Virgo G299232/GW170825: serendipitous XMM-Newton slew observations
  94. LIGO/Virgo G298936/GW170823: serendipitous XMM-Newton slew observations
  95. Konus-Wind observation of GRB 170921B
  96. IceCube-170922A: HAWC follow-up
  97. Search for counterpart to IceCube-170922A with ANTARES
  98. GRB 170921B: AstroSat CZTI detection
  99. GRB 170906A: Insight-HXMT detection
  100. GRB 170921C: Insight-HXMT detection

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