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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.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

32707 results found.

  1. GRB 101201A: GROND Detection of the Optical/NIR Afterglow
  2. Swift detection of MAXIJ1409-619
  3. GRB 101123A: ROTSE optical observations
  4. GRB 101123A: MASTER prompt optical observations
  5. Konus-Wind observation of GRB 101123A
  6. IPN triangulation of bright GRB 101123A
  7. Optical observation of GRB 101024A
  8. GRB 101117B: GROND Upper limits
  9. GRB 101117B: Swift/UVOT Observations of the Optical Afterglow
  10. XRF 101117A: Palomar Transient Factory Observations
  11. GRB 101117B: Swift-XRT refined analysis
  12. GRB101114A: Swift/UVOT Upper Limits
  13. GRB 101114A: Confirmation of the X-ray afterglow
  14. GRB 101117B: Swift-BAT refined analysis
  15. GRB 101114A: GROND Upper limits
  16. Konus-Wind observation of GRB 101114A
  17. GRB 101114A: Swift-XRT candidate afterglow detection and analysis
  18. Possible detection of INTEGRAL burst GRB 101112A by the EVLA
  19. GRB 101112A: Fermi GBM detection
  20. GRB 101112A: optical observations
  21. GRB 10112A: MASTER optical observations
  22. Konus-Wind observation of GRB 101112A
  23. GRB 101112A - XRT source detection/analysis
  24. GRB 101112A: BOOTES-2/TELMA optical afterglow candidate
  25. GRB101112A: Liverpool Telescope Afterglow Candidate
  26. GRB 100906A: optical observations
  27. GRB 090113, the review of the sky area in plate archives
  28. GRB 101030A : MOA optical observation
  29. GRB 101030A: GROND optical/NIR afterglow candidate
  30. GRB 101030A : Swift XRT refined analysis
  31. GRB 101030A: Swift/UVOT Upper Limits
  32. GRB 101030A: Swift-BAT refined analysis
  33. GRB 090111, the review of the sky area in plate archives (1976-1996)
  34. Konus-Wind observation of GRB 101023A
  35. GRB 101024A: GROND optical/NIR observations
  36. GRB 101024A: Swift XRT refined analysis
  37. GRB 101023A: miniTAO/ANIR NIR detection
  38. GRB 101024A: Fermi GBM observation
  39. GRB 101023A: Fermi GBM observation
  40. GRB101024A: Swift/UVOT
  41. GRB 101024A: Swift-BAT refined analysis
  42. GRB 101024A: GRAS06 optical observations
  43. Swift/UVOT observations of GRB101023A
  44. GGRB 101023A: GROND detection of the optical-NIR afterglow
  45. GRB 101023A: Swift-XRT Team Refined Analysis
  46. GRB 101023A: Swift-BAT refined analysis
  47. GRB 101023A: Gemini discovery of optical afterglow
  48. GRB 101023A: REM NIR observations
  49. GRB 101011A: miniTAO/ANIR NIR upper limits
  50. GRB 101020A: MASTER prompt and afterglow limit
  51. GRB 101020A: MASTER polarization optical observations
  52. GRB 101020A, Swift-BAT refined analysis
  53. GRB 101017A: miniTAO/ANIR NIR upper limits
  54. GRB 101017A: Swift XRT refined analysis
  55. GRB 101017A: Swift/UVOT Observations
  56. GRB 101008A: correction to the GCN 11352
  57. GRB 101008A: optical observations
  58. GRB101017A: MITSuME Okayama optical upper limits
  59. Konus-Wind observation of GRB 101017A
  60. GRB 101014A: Fermi LAT detection
  61. GRB 101017A: Swift-BAT refined analysis
  62. GRB 101017A: ROTSE-III Optical Limits
  63. GRB 101011A: Fermi GBM detection
  64. Konus-Wind observation of GRB 101014A
  65. GRB 100906A: D50 optical detection
  66. GRB 100902A: D50 optical limit
  67. GRB 101011A: Swift/UVOT observations
  68. GRB 101011A, GROND upper limits
  69. GRB 101011A: Zadko observatory - Gingin optical observations
  70. GRB 101011A: XRT Refined Analysis
  71. GRB 101011A: Swift/UVOT Observations of a Possible Optical Afterglow
  72. GRB 101011A: Swift-BAT refined analysis
  73. GRB 101008A: Fermi GBM observation
  74. GRB 101008A: MASTER prompt optical observations (correction to GCN#11328)
  75. GRB 101008A: MASTER prompt optical observations
  76. GRB 101008A: Swift-BAT refined analysis
  77. GRB101008A, GROND detection of a fading afterglow
  78. GRB 101008A: Swift-XRT refined analysis
  79. GRB 101008A: SAO RAS optical observations
  80. GRB 100915 optical upper limit
  81. GRB 101008: Swift/UVOT Upper Limits
  82. GRB 100728B: X-shooter redshift
  83. GRB 100925A / MAXI J1659-152: MASTER optical observations
  84. GRB 100924A: Suzaku WAM observation of the prompt emission
  85. GRB 100928A, Swift-BAT refined analysis
  86. GRB 100924A: Fermi GBM observation
  87. GRB 100925A / MAXI J1659-152: WSRT Radio and Polarization Detection
  88. GRB 100925A / MAXI J1659-152: Optical observation with the Kottamia 188cm telescope
  89. GRB100925A/MAXI J1659-152: X-shooter identification as an X-ray binary
  90. GRB100925A/MAXI J1659-152 MITSuME Ishigakijima and Okayama Optical Observation
  91. GRB 100925A / MAXI J1659-152: SARA-S Observations
  92. GRB100925A/MAXI J1659-152: Galactic origin from SED analysis
  93. GRB 100925A/MAXI J1659-152 - NOT optical observations
  94. GRB 100925A / MAXI J1659-152: BOOTES-2/TELMA and IAC80 optical observations
  95. MAXI J1659-152: Swift-BAT refined analysis (triggers 434928 and 434931)
  96. GRB 100925A: Nearby DSS Source - SN-GRB or new Galactic transient?
  97. GRB100925A UVOT afterglow
  98. GRB 100924A: GROND detection of an optical/NIR afterglow
  99. GRB 100924A: Swift-BAT refined analysis
  100. GRB100906A: Ashra-1 observation of early optical emission

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