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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"

43959 results found.

  1. GRB 171115A: Swift-XRT refined Analysis
  2. GRB 171115A: Enhanced Swift-XRT position
  3. GRB 171115A: Swift detection of a burst
  4. GRB 171112A: Fermi GBM Detection
  5. LIGO/Virgo G288732/GW170608: updated localization from parameter estimation
  6. Konus-Wind observation of GRB 171112A
  7. FACT follow-up of IceCube20171106
  8. Konus-Wind observation of GRB 171108A
  9. GRB 171112A: MAXI/GSC detection
  10. IPN Triangulation of GRB 171108A (short)
  11. GRB 171103A: Insight-HXMT observation
  12. IceCube-171106A: Swift Observations
  13. HAWC follow-up of IceCube-171106A
  14. GRB 171010A: afterglow and SN 2017htp optical observations
  15. GRB 171108A: Fermi GBM detection
  16. GRB 171102A CALET Gamma-Ray Burst Monitor detection
  17. GRB 171101A CALET Gamma-Ray Burst Monitor detection
  18. INTEGRAL observation of IceCube-171106A
  19. GRB 171030A: MASTER OT J034412.48-263556.5 featureless continuum spectrum from Lijiang 2.4m (China) telescope and 2m the Himalayan Chandra
  20. GRB 171010A: possible SN component
  21. Fermi-GBM Trigger 531686417 / 171106778 is not related to ICECUBE-171106A
  22. IceCube-171106A - IceCube observation of a high-energy neutrino candidate
  23. AMON ICECUBE EHE 130214 (close by time to Fermi trigger): MASTER early follow-up observations
  24. GRB 171103A: AstroSat CZTI detection
  25. GRB 171030A: MASTER inspection of the IPN error box of the short GRB.
  26. Konus-Wind observation of GRB 171103A (short/hard)
  27. GRB 171103A: Fermi GBM observation
  28. GRB 171103A: Swift-BAT refined analysis of a short GRB
  29. LIGO/Virgo G298936: NOT spectroscopy of GWFUNC-17ure
  30. Fermi GBM detections of Swift J0243.6+6124 and modification of the GBM trigger configuration
  31. GRB 171010A: VLT spectroscopic identification of the associated SN 2017htp
  32. GRB 171103A: Swift detection of a short hard burst
  33. Konus-Wind observation of GRB 171102A
  34. GRB 171102B: AbAO optical upper limit
  35. GRB 171102B: TShAO optical upper limit
  36. IPN Triangulation of GRB 171102A
  37. GRB 171102B: RATIR Optical and NIR Observations
  38. GRB 171102B: Swift-BAT refined analysis
  39. GRB 171102B: Swift-XRT refined Analysis
  40. GRB 171102B: Enhanced Swift-XRT position
  41. GRB 171102A: Fermi GBM detection
  42. GRB 171102B: Swift detection of a burst
  43. GRB 171102A: Fermi-LAT detection
  44. GRB 171030A: IPN error box through NSs probability merging rate map
  45. GRB 171030A: Fermi GBM detection
  46. GRB 171030A: Swift non-localization with BAT, XRT and UVOT
  47. GRB 171030A: Swift ToO observations
  48. IPN Triangulation of GRB 171030A (short)
  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. Swift Trigger 783893: LCO 1-m telescope observations
  53. Swift Trigger 783893 is probably not a GRB
  54. GRB 171027A, Swift-BAT refined analysis
  55. Retraction of high energy neutrino candidate IceCube-171028
  56. GRB 171027A: Swift-XRT refined Analysis
  57. GRB 171027A: Enhanced Swift-XRT position
  58. GRB 171027A: RATIR Confirmation of Fading and Photo-z
  59. GRB 171027A: VLT optical upper limits
  60. GRB 171027A: LCO 1-m telescope observations
  61. GROND observations of GRB 171027A: correction
  62. GRB 171027A: RATIR Detection of a NIR Afterglow Candidate
  63. GROND observations of GRB 171027A
  64. GRB 171027A: MASTER-OAFA (Argentina) early prompt optical observations
  65. GRB 171027A: Prompt enhanced Swift-XRT position
  66. GRB 171027A: Swift detection of a burst
  67. Konus-Wind observation of GRB 171022A
  68. IPN Triangulation of GRB 171022A
  69. GRB 171013B CALET Gamma-Ray Burst Monitor detection
  70. Fermi GBM trigger 530617076/171025401 is not a GRB
  71. Swift trigger 781740: Further analysis from Swift and Fermi/GBM
  72. Numerous Fermi-GBM Subthreshold Notices are due to Swift J0243.6+6
  73. GRB 171022A: Fermi GBM detection
  74. GRB 171022A: Fermi-LAT detection
  75. Swift Trigger 781740 is not a burst
  76. Fermi GBM Observations of IceCube-171015A
  77. GRB 171020A: Continued RATIR Optical and NIR Observation
  78. GRB 171020A: TAROT Calern observatory optical observations
  79. GRB 171020A: NOT spectroscopic redshift
  80. GRB 171020A: Swift-BAT refined analysis
  81. GRB 171020A: RATIR Optical and NIR Observations
  82. GRB 171020A: Swift-XRT refined Analysis
  83. GRB 171020A: Enhanced Swift-XRT position
  84. GRB 171020A: LT observations
  85. GRB 171020A: Correction of alpha in GCN 22031
  86. GRB 171020A: Confirmation of OT fading
  87. GRB 171020A: NOT optical afterglow detection
  88. GRB 171020A: Swift detection of a burst
  89. Fermi-GBM Detection of possible burst from AXP CXOU J164710.2-455216/PSR J1647-4552
  90. GRB 171011B: Insight-HXMT detection
  91. Trigger 780207: Swift triggers again on AXP CXOU J164710.2-455216/PSR J1647-4552
  92. Swift Trigger on AXP CXOU J164710.2-455216/PSR J1647-4552
  93. GRB 171010B: Swift-XRT afterglow detection
  94. GRB 171011B CALET Gamma-Ray Burst Monitor detection
  95. Trigger 779762: Swift detection of Vela X-1
  96. Trigger 779351: Swift detection of Swift J0243.6+6124
  97. Search for counterpart to IceCube-171015A with ANTARES
  98. INTEGRAL SPI-ACS observation of IceCube-171015A
  99. Swift trigger 779171 is probably a noise fluctuation
  100. IceCube-171015A - IceCube observation of a high-energy neutrino candidate event

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