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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"

12190 results found.

  1. LIGO/Virgo G270580: AGILE MCAL and Super-AGILE Observations
  2. LIGO/Virgo G270580: Identification of a GW Burst Candidate
  3. Konus-Wind observation of GRB 170115B
  4. GRB 170115A: Swift-XRT refined Analysis
  5. GRB 170115B: Fermi-LAT detection
  6. GRB 170115A: Swift detection of a burst
  7. LIGO/Virgo G268556: spectra of two nuclear transients PS17fr and PS17er
  8. GRB 161219B: afterglow and SN2016jca optical observations
  9. GRB 170111A: Swift-BAT refined analysis
  10. GRB 170111A: Swift-XRT refined Analysis
  11. LIGO/Virgo G268556/GW170104: Campo Imperatore Observatory observations
  12. LIGO/Virgo G268556: AMI 15 GHz detection of ATLAS17aeu
  13. GRB 170111A: Swift detection of a burst
  14. LIGO/Virgo G268556: Spectroscopic observations of ATLAS17aeu and iPTF17cw
  15. LIGO/Virgo G268556: Pan-STARRS1 observations and summary of transient sources
  16. LIGO/Virgo G268556: IPN Triangulation of GRB 170105A (association with ATLAS17aeu)
  17. LIGO/Virgo G268556/GW170104: Lomonosov BDRG observations
  18. LIGO/Virgo G268556: CALET Observations
  19. LIGO/Virgo G268556: iPTF Optical Transient Candidates
  20. LIGO/Virgo G268556/GW170104: Global MASTER Net second OT detection
  21. LIGO/Virgo G268556: SWASP optical imaging
  22. LIGO/Virgo G268556/GW170104: Global MASTER Net observations and first OT detection
  23. LIGO/Virgo G268556: ATLAS imaging of the skymap
  24. LIGO/Virgo G268556: AGILE MCAL and Super-AGILE Observations
  25. LIGO/Virgo G268556: Fermi-LAT search for high-energy gamma-ray counterpart
  26. LIGO/Virgo G211117 / GW151226: LOFAR follow-up
  27. LIGO/Virgo G268556: observation regions by Project Mini-GWAC of SVOM
  28. Konus-Wind observation of GRB 170101A
  29. GRB161219B - Anticipated hyperluminal evidence
  30. Fermi GBM trigger 504043585/161221838 is not a GRB
  31. Konus-Wind observation of GRB 161219B
  32. GRB 161219B: SALT observations
  33. GRB 161220A: Swift-XRT refined Analysis
  34. GRB 161220A: LCO-FTS observations
  35. GRB 161219B: MITSuME Akeno Optical Observation
  36. GRB 161219B: Swift/UVOT Detection
  37. Konus-Wind observation of GRB 161218B
  38. GRB 161220A: Swift detection of a burst
  39. GRB 161219B: LCO Sutherland observations
  40. GRB 161219B: GROND afterglow observations
  41. GRB 161219B: Swift-XRT refined Analysis
  42. GRB 161219B: Swift detection of a burst with an optical afterglow
  43. GRB 161219A: a long GRB detected by INTEGRAL
  44. Konus-Wind observation of GRB 161218A
  45. GRB 161217A: Swift-BAT refined analysis
  46. GRB 161214B: Swift-BAT refined analysis
  47. Fermi-LAT Gamma-ray Observations of IceCube-161210
  48. GRB 161214B: Swift-XRT refined Analysis
  49. GRB 161214B: Swift detection of a burst
  50. IceCube-161210: Konus-Wind upper limits
  51. GRB 161214A: A long GRB detected by INTEGRAL
  52. HAWC follow-up on IceCube-161210
  53. INTEGRAL SPI-ACS and IBIS/Veto observation of IceCube-161210
  54. IceCube-161210: MAXI/GSC non-detection
  55. IceCube-161210: IceCube observation of a high-energy neutrino candidate event
  56. GRB 161207A: CALET Gamma-Ray Burst Monitor detection
  57. GRB 161129A: KWFC z-band photometry
  58. Konus-Wind observation of GRB 161202A
  59. GRB 161202A: Swift-XRT refined Analysis
  60. GRB 161202A: Fermi-LAT detection
  61. GRB 161202A: Swift detection of a burst
  62. GRB 161129A: Tautenburg Ic-band observations
  63. GRB 161123A: MAXI/GSC detection
  64. GRB 161119A: MASTER-SAAO possible OT detection during Fermi Alert
  65. GRB 161117B: Swift-XRT refined Analysis
  66. Konus-Wind observation of GRB 161117A
  67. GRB 161117A iTelescope observation
  68. GRB 161117A: Swift-XRT refined Analysis
  69. GRB 161117B: Swift detection of a burst
  70. GRB 161113A: Swift-XRT refined Analysis
  71. GRB 161113A: Swift detection of a burst
  72. GRB 161109A: CALET Gamma-Ray Burst Monitor detection
  73. GRB 161104A: Chandra X-ray observations
  74. GRB 161109A: Fermi-LAT detection
  75. GRB 161108A: Swift-XRT refined Analysis
  76. GRB 161108A: Swift detection of a burst
  77. Fermi LAT Gamma-ray Observations of IceCube-161103
  78. GRB 161103A: an ultra-long GRB detected by Konus-Wind
  79. IceCube-161103: Konus-Wind upper limits
  80. GRB 161105A: MASTER-IAC early optical observations
  81. GRB 161020A: Fermi GBM observation
  82. GRB 161023A: Swift-XRT afterglow detection
  83. Konus-Wind observation of GRB 161023A
  84. GRB 161023A: LCOGT-FTS optical observations
  85. GRB 161023A: A long GRB detected by INTEGRAL
  86. GRB 161023A (Integral trigger 7613) MASTER-Net bright OT detection
  87. Swift Trigger 718766 is not an astrophysical event.
  88. GRB 161022A: Enhanced Swift-XRT position
  89. Konus-Wind observation of GRB 161020B
  90. GRB 161022A: Swift-XRT refined Analysis
  91. GRB 161022A: Prompt enhanced Swift-XRT position
  92. GRB 161022A: Swift detection of a burst
  93. GRB 161020A: A long GRB detected by INTEGRAL
  94. Konus-Wind observation of GRB 161017A
  95. GRB161017A optical R band observations with SARA-RM
  96. GRB 161017A: Lomonosov Gamma Ray and MASTER Optical prompt observations
  97. GRB 161017A: Swift/UVOT Detection
  98. GRB 161017A: Swift-XRT refined Analysis
  99. GRB161017.74 MASTER-Net OT detection
  100. Konus-Wind observation of GRB 161015A

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