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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').
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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"

24587 results found.

  1. GRB 171106A CALET Gamma-Ray Burst Monitor detection
  2. LIGO/Virgo G298048: Brightening X-ray Emission from GW170817/GRB170817A/SSS17a
  3. LIGO/Virgo G298048: Late-time detection of the X-ray afterglow with Chandra
  4. GRB 171205A: LCO 1-m telescope observations
  5. GRB171205A hyperluminal radio afterglow?
  6. GRB 171205A: SMARTS optical/IR afterglow observations
  7. Possible blackbody component in the X-ray spectrum of GRB171205A
  8. GRB 171205A: GOTO detection of the optical counterpart
  9. GRB 171205A: TNG NIR detections
  10. GRB 171205A: Swift-BAT refined analysis
  11. GRB 171124A: TShAO optical observations
  12. Pan-STARRS follow-up of IceCube-171106A
  13. LIGO/Virgo G299232: LOFAR follow-up
  14. GRB 171126A: Fermi GBM detection
  15. INTEGRAL pointed follow-up of IceCube-171106A
  16. GRB 171124A: Swift-XRT observations
  17. GRB 171124A: Fermi GBM observation
  18. GRB 171123A: Nanshan-1m optical upper limit
  19. GRB 171124A: MITSuME Akeno optical upper limits
  20. GRB 171124A: Fermi-LAT detection
  21. GRB 171123A: MITSuME Akeno optical upper limits
  22. GRB 171123A: Swift-BAT refined analysis
  23. GRB 171120A: Insight-HXMT detection
  24. Konus-Wind observation of GRB 171119A
  25. IPN Triangulation of GRB 171119A (long)
  26. GRB 171120A: Xinglong-2.16m optical upper limit
  27. Konus-Wind observation of GRB 171120A
  28. GRB171120A: GWAC-F60A upper limit
  29. GRB 171120A: MITSuME Akeno optical upper limits
  30. GRB 171120A: Swift-BAT refined analysis
  31. GRB 171120A: Fermi GBM Detection
  32. GRB 171120A: Swift-XRT refined Analysis
  33. GRB 171120A: Fermi-LAT detection
  34. GRB 171120A: Swift detection of a burst
  35. Fermi-LAT Gamma-ray Observations of IceCube-171106A
  36. GRB 171115A: MITSuME Okayama optical upper limits
  37. GRB 171115A: MITSuME Akeno optical upper limits
  38. GRB 171115A: Swift-BAT refined analysis
  39. GRB 171112A: Fermi GBM Detection
  40. LIGO/Virgo G288732/GW170608: updated localization from parameter estimation
  41. Konus-Wind observation of GRB 171112A
  42. Konus-Wind observation of GRB 171108A
  43. IPN Triangulation of GRB 171108A (short)
  44. GRB 171103A: Insight-HXMT observation
  45. IceCube-171106A: Swift Observations
  46. GRB 171108A: Fermi GBM detection
  47. INTEGRAL observation of IceCube-171106A
  48. IceCube-171106A - IceCube observation of a high-energy neutrino candidate
  49. AMON ICECUBE EHE 130214 (close by time to Fermi trigger): MASTER early follow-up observations
  50. Konus-Wind observation of GRB 171103A (short/hard)
  51. GRB 171103A: Fermi GBM observation
  52. GRB 171103A: Swift-BAT refined analysis of a short GRB
  53. GRB 171010A: VLT spectroscopic identification of the associated SN 2017htp
  54. GRB 171103A: Swift detection of a short hard burst
  55. Konus-Wind observation of GRB 171102A
  56. IPN Triangulation of GRB 171102A
  57. GRB 171102B: Swift-BAT refined analysis
  58. GRB 171102B: MITSuME Akeno optical upper limits
  59. GRB 171102A: Fermi GBM detection
  60. GRB 171102B: Swift detection of a burst
  61. GRB 171102A: Fermi-LAT detection
  62. GRB 171030A: Fermi GBM detection
  63. GRB 171030A: Swift non-localization with BAT, XRT and UVOT
  64. IPN Triangulation of GRB 171030A (short)
  65. Swift Trigger 783893: KAIT Optical Observations
  66. GRB 171027A: KAIT Optical Upper Limit
  67. GRB 171022A: Fermi-LAT detection retraction
  68. Konus-Wind observation of GRB 171027A
  69. Swift Trigger 783893: LCO 1-m telescope observations
  70. GRB 171027A, Swift-BAT refined analysis
  71. Retraction of high energy neutrino candidate IceCube-171028
  72. GRB 171027A: RATIR Confirmation of Fading and Photo-z
  73. GRB 171027A: LCO 1-m telescope observations
  74. GRB 171027A: MASTER-OAFA (Argentina) early prompt optical observations
  75. Konus-Wind observation of GRB 171022A
  76. IPN Triangulation of GRB 171022A
  77. GRB 171022A: Fermi GBM detection
  78. GRB 171022A: Fermi-LAT detection
  79. Fermi GBM Observations of IceCube-171015A
  80. GRB 171020A: Swift-BAT refined analysis
  81. GRB 171020A: LT observations
  82. GRB 171020A: Mini-MegaTORTORA upper limits on simultaneous optical emission
  83. Fermi-GBM Detection of possible burst from AXP CXOU J164710.2-455216/PSR J1647-4552
  84. GRB 171011B: Insight-HXMT detection
  85. Search for counterpart to IceCube-171015A with ANTARES
  86. INTEGRAL SPI-ACS observation of IceCube-171015A
  87. IceCube-171015A - IceCube observation of a high-energy neutrino candidate event
  88. GRB 171010A : Optical observations from HCT
  89. GRB 171010B: Swift-XRT observations
  90. GRB 171011A: Swift-BAT refined analysis
  91. Konus-Wind observation of GRB 171011B
  92. Konus-Wind observation of GRB 171010A
  93. GRB 171010A: MITSuME Akeno Optical Observation
  94. GRB 171010B: Fermi GBM detection
  95. IPN Triangulation of GRB 171011B (long/very bright)
  96. GRB 171010B: Swift detection of a burst
  97. GRB 171011A: MASTER-SAAO optical observations
  98. GRB 171011A: Swift detection of a burst
  99. GRB 171010A: Fermi GBM observation
  100. GRB 171010A: LCO 1m telescope observations

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