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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"

16152 results found.

  1. GRB 160303A: MMT Optical Detection
  2. GRB 160303A: Continued RATIR Optical and NIR Observations
  3. LIGO/Virgo G211117: GRAWITA LBT follow-up of PS15dpn
  4. GRB 160303A: GROND Optical Detection
  5. GRB 160303A: BOAO R-band Detection
  6. GRB 160303A: McDonald 2.1m CQUEAN Detection
  7. GRB 160303A SMA observation
  8. GRB 160303A iTelescope observation
  9. GRB 160303A: Optical observations from the NOT
  10. GRB 160303A: Swift/UVOT Detection
  11. GRB 160303A: RAPTOR Observations During Gamma-Ray Emitting Interval
  12. GRB 160303A: RATIR Optical and NIR Afterglow Detection
  13. GRB 160303A: MITSuME Akeno optical upper limits
  14. GRB 160303A: LCOGT-FTN optical observations
  15. GRB 160303A: MITSuME Okayama upper limits
  16. GRB 160303A: ISON-NM early optical early limits
  17. GRB 160227A: LOAO 1.0m optical detection
  18. GRB 160228A: Swift/UVOT Upper Limits
  19. GRB 160228A: Mondy optcial observations
  20. GRB 160228A: RATIR Optical and NIR Observations
  21. GRB 160228A: MASTER-Amur prompt observations
  22. GRB 160227A: MASTER prompt OT Detection and LC
  23. GRB 160227A: AROMA-N Optical Observation
  24. GRB 160228A: GROND Afterglow Candidate
  25. GRB 160228A: optical observations
  26. GRB 160227A: NOT redshift
  27. GRB 160225A: TSHAO optical afterglow detection
  28. GRB 160227A: ISON-Kislovodsk optical observation
  29. GRB 160227A: Mt. Terskol observatory optical observation
  30. GRB 160227A: MASTER OT Detection
  31. GRB 160227A: Swift detection of a burst with an optical counterpart
  32. GRB 160225A: LOAO optical upper limit
  33. IPN Triangulation of GRB 160225B
  34. GRB 160225A: Continued RATIR Optical and NIR Observations
  35. GRB 160225A: RATIR Optical and NIR Observations
  36. GRB 160225A: Swift/UVOT Upper Limits
  37. GRB 160225A: Xinglong TNT optical observation
  38. GRB 160225A: NOT optical observations
  39. GRB 160225A: MITSuME Okayama Optical Observation
  40. GRB 160225A: MITSuME Akeno Optical Observation
  41. GRB 160223A: RATIR Optical and NIR Observations
  42. GRB 160225A: TSHAO optical upper limit
  43. GRB 160225A: MASTER-Amur early observations
  44. GRB 160223A: AbAO optical observations
  45. GRB 160223B: MASTER-Amur early observations
  46. GRB 160223B: Khureltogot optical observations
  47. GRB 160223B: LCOGT-FTN optical observations
  48. GRB 160223A: GROND optical/NIR afterglow
  49. Further Swift/UVOT observations of GRB 160220B
  50. GRB 160221A: MASTER-SAAO early observations
  51. GRB160220B: Swift/UVOT observations
  52. LIGO/Virgo GW150914
  53. GRB160220A: Swift/UVOT observations
  54. GRB 160220A: TAROT Calern and TAROT La Silla observatory optical observations
  55. GRB 160220A: MASTER-Amur observations
  56. GRB 160220A: GROND Optical/NIR Upper Limits
  57. LIGO/Virgo GW150914: BOOTES-3 simultaneous imaging
  58. LIGO/Virgo G184098: MASTER arhival results
  59. LIGO/Virgo G184098: Correction for GCN Circular 18361
  60. GRB 160216A: Swift/UVOT Upper Limits
  61. GRB 160206A: Kiso/KWFC optical observations
  62. GRB 160206B: Fermi GBM detection
  63. GRB 160131A: TSHAO optical observations
  64. GRB 160203A: MITSuME Akeno optical upper limits
  65. GRB 151215A: TAROT Calern observatory very early optical detection
  66. GRB 160206A: Swift/UVOT observations
  67. GRB 160203A: Zadko observatory - Gingin optical detection
  68. GRB 160206B: iPTF P48 Observations and Optical Transient Candidates
  69. GRB 160131A: TSHAO optical observations
  70. GRB 160131A: Mondy optcial observations
  71. GRB 160203A: TSHAO optical observations
  72. GRB 160203A: RATIR Optical Observations
  73. GRB 160131A: RATIR Optical Observations
  74. GRB 160203A: Skynet PROMPT-CTIO observations of the optical afterglow
  75. GRB 160203A: Swift/UVOT Detection
  76. GRB 160203A: LCOGT-Cerro Tololo optical afterglow confirmation
  77. GRB 160131A: VLA detection
  78. GRB 160131A: Optical observations from T150 OSN
  79. GRB 160131A: AbAO optical observations
  80. GRB 160131A: Mondy optical observations
  81. GRB 160131A: Xinglong/BFOSC spectroscopy
  82. GRB 160131A: MITSuME Ishigakijima Optical Observation
  83. GRB 160131A: GROND Detection of the Optical/NIR Afterglow
  84. GRB 160131A: TNG spectroscopic observations and redshift
  85. GRB 160131A: Bassano Bresciano Observatory optical observations
  86. GRB 160131A: Khureltogot optical observations
  87. GRB 160131A: TNG optical observations
  88. GRB 160131A: iTelescope optical observations
  89. GRB 160131A: LCOGT-SSO optical observations
  90. GRB 160131A: RATIR Optical Observations
  91. GRB 160131A: Xinglong 60cm WFT optical observation
  92. GRB160131A: Xinglong TNT optical observation
  93. GRB 160131A: LCOGT-FTN optical afterglow observations
  94. GRB160131.35 MASTER-Net OT detection
  95. GRB 160131A: Swift detection of a burst with an optical counterpart
  96. GRB 160127A: RATIR Optical Observations
  97. GRB 160127A: Khureltogot optical observations
  98. GRB 160127A: MITSuME Akeno optical upper limits
  99. GRB 160127A: VLA Detection
  100. GRB 160127A: LCOGT-Sutherland optical upper limit

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