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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"

24547 results found.

  1. GRB 160203A: TAROT La Silla - TAROT Calern - Zadko observations
  2. GRB 160203A: GROND Afterglow Candidate
  3. Konus-Wind observation of GRB 160131A
  4. GRB 160131A: MITSuME Ishigakijima Optical Observation
  5. GRB 160131A: Swift-XRT refined Analysis
  6. GRB 160131A: iTelescope optical observations
  7. GRB 160131A: Swift-BAT refined analysis
  8. GRB 160131A: Xinglong 60cm WFT optical observation
  9. GRB160131A: Xinglong TNT optical observation
  10. GRB160131.35 MASTER-Net OT detection
  11. GRB 160127A: MITSuME Akeno optical upper limits
  12. GRB 160127A: Swift-BAT refined analysis
  13. GRB 160127A: Swift-XRT refined Analysis
  14. GRB 160127A: Swift detection of a burst with an optical counterpart
  15. GRB 160123A: NOT J-band observations
  16. GRB 160123A: Swift-BAT refined analysis
  17. GRB 160121A: Swift-BAT refined analysis
  18. GRB 160121A: MASTER-Amur observations
  19. GRB 160121A: Swift detection of a burst
  20. Konus-Wind observation of GRB 160119A
  21. GRB 160119A: Swift-BAT refined analysis
  22. GRB 160117B: further NOT optical observations of the afterglow
  23. GRB 160119A: Swift-XRT refined Analysis
  24. GRB 160119A: NOT and GTC afterglow candidate
  25. LIGO/Virgo G211117: Refined localization from CBC parameter estimation
  26. GRB 160117A: Swift-XRT observations
  27. GRB 160117B: iTelescope T17 optical observations
  28. GRB 160117B: Swift-XRT refined Analysis
  29. GRB 160117A: Swift-BAT refined analysis
  30. GRB 160117B: MASTER-Amur OT observations
  31. Konus-Wind observation of GRB 160113A
  32. GRB 160117B: Swift detection of a burst with optical counterpart
  33. GRB 160117A: Swift detection of a burst
  34. IPN Triangulation of GRB 160113A
  35. Konus-Wind observation of GRB 160104B
  36. Konus-Wind observation of GRB 160102A
  37. Konus-Wind observation of GRB 151231A
  38. IPN Triangulation of GRB 160111A (short/hard)
  39. GRB 151225A: Correction to the trigger time of GCN 18724
  40. GRB 160113A: Fermi GBM detection
  41. GRB 160113A: iPTF P48 Observations and Optical Transient Candidates
  42. LIGO/Virgo G184098: Refined localizations from CBC parameter estimation
  43. Konus-Wind observation of GRB 160107A
  44. IPN Triangulation of GRB 151231A
  45. Konus-Wind observation of GRB 151229B
  46. IPN Triangulation of GRB 151229B (extremely intense/long)
  47. GRB 160107A: Fermi GBM observation
  48. LIGO/Virgo G211117: Pi of the Sky observations
  49. GRB 160104A: Continued MITSuME Akeno Optical Observation
  50. Konus-Wind observation of GRB 160101A
  51. Konus-Wind observation of GRB 151225A
  52. IPN Triangulation of GRB 151225A (short/hard)
  53. GRB 160104A: Nishi-Harima MINT Observations
  54. GRB 160104A: Swift-BAT refined analysis
  55. GRB 160104A: Fermi GBM observation
  56. GRB 160104A: Mini-GWAC upper limit during prompt emission phase
  57. GRB 160104A: GWAC upper limit during prompt emission phase
  58. GRB 160104A: MITSuME Okayama upper limits
  59. GRB 160104A: Xinglong TNT optical observation
  60. GRB 160104A: MASTER early OT detection
  61. GRB 160104A: MITSuME Okayama Ks-band upper-limit
  62. GRB 160104A: MITSuME Akeno Optical Observation
  63. LIGO/Virgo G211117: Fermi/LAT observations
  64. LIGO/Virgo G211117: Gemini classification of 7 Pan-STARRS transients
  65. LIGO/Virgo G211117: LOFAR follow-up
  66. GRB 160102A: Swift-XRT observations
  67. GRB 160101A: MITSuME Akeno optical upper limits
  68. LIGO/Virgo G211117: CSS/CRTS observations on 29/30 Dec 2015 UT
  69. GRB 160101B: Fermi-LAT detection
  70. GRB 160101B: Fermi GBM detection
  71. GRB 160101A: Fermi GBM observation
  72. GRB 160101A: Swift-XRT afterglow detection
  73. GRB 151231B: Fermi GBM observation
  74. GRB 151231A: Fermi GBM observation
  75. LIGO/Virgo G211117: 44 transients from Pan-STARRS data during 2015-12-28/30
  76. MASTER-NET observations of V404Cyg Swift Trigger 668877
  77. LIGO/Virgo G211117: Liverpool Telescope followup of EM candidates
  78. Konus-Wind observation of GRB 151227B
  79. Trigger 668879: Swift detection of V 404 Cyg again
  80. Trigger 668877: Swift detection of V 404 Cyg
  81. LIGO/Virgo G211117: INAF TNG follow-up of MASTER OT J020906.21+013800.1
  82. LIGO/Virgo G211117: OAO-WFC NIR follow-up observations
  83. IPN Triangulation of GRB 151227B
  84. GRB 151228A: Swift-XRT refined Analysis
  85. LIGO/Virgo G211117: MASTER Observations of the 3 iPTF candidates
  86. GRB 151229A: MITSuME Akeno optical upper limits
  87. LIGO/Virgo G211117: List of near-term future observation regions by Project Mini-GWAC of SVOM
  88. LIGO/Virgo G211117: iPTF Optical Transient Candidates
  89. GRB 151229A: MITSuME Okayama upper limits
  90. GRB 151228B: MITSuME Akeno optical upper limits
  91. GRB 151229A: Fermi GBM observation
  92. GRB 151228B: Fermi GBM observation
  93. GRB 151228A: Swift-BAT refined analysis
  94. GRB 151228B: Swift-BAT refined analysis
  95. GRB 151229A: Swift-BAT refined analysis
  96. GRB 151228B: Swift-XRT refined Analysis
  97. GRB 151228A: MITSuME Akeno optical upper limits
  98. LIGO/Virgo G211117: Optical NIR observation with Kanata telescope
  99. LIGO/Virgo G211117: Fermi GBM Observations
  100. LIGO/Virgo G211117: Optical follow-up with Kanata telescope

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