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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"

32571 results found.

  1. GRB 101023A: miniTAO/ANIR NIR detection
  2. GRB 101024A: Fermi GBM observation
  3. GRB 101023A: Fermi GBM observation
  4. GRB101024A: Swift/UVOT
  5. GRB 101024A: Swift-BAT refined analysis
  6. GRB 101024A: GRAS06 optical observations
  7. Swift/UVOT observations of GRB101023A
  8. GGRB 101023A: GROND detection of the optical-NIR afterglow
  9. GRB 101023A: Swift-XRT Team Refined Analysis
  10. GRB 101023A: Swift-BAT refined analysis
  11. GRB 101023A: Gemini discovery of optical afterglow
  12. GRB 101023A: REM NIR observations
  13. GRB 101011A: miniTAO/ANIR NIR upper limits
  14. GRB 101020A: MASTER prompt and afterglow limit
  15. GRB 101020A: MASTER polarization optical observations
  16. GRB 101020A, Swift-BAT refined analysis
  17. GRB 101017A: miniTAO/ANIR NIR upper limits
  18. GRB 101017A: Swift XRT refined analysis
  19. GRB 101017A: Swift/UVOT Observations
  20. GRB 101008A: correction to the GCN 11352
  21. GRB 101008A: optical observations
  22. GRB101017A: MITSuME Okayama optical upper limits
  23. Konus-Wind observation of GRB 101017A
  24. GRB 101014A: Fermi LAT detection
  25. GRB 101017A: Swift-BAT refined analysis
  26. GRB 101017A: ROTSE-III Optical Limits
  27. GRB 101011A: Fermi GBM detection
  28. Konus-Wind observation of GRB 101014A
  29. GRB 100906A: D50 optical detection
  30. GRB 100902A: D50 optical limit
  31. GRB 101011A: Swift/UVOT observations
  32. GRB 101011A, GROND upper limits
  33. GRB 101011A: Zadko observatory - Gingin optical observations
  34. GRB 101011A: XRT Refined Analysis
  35. GRB 101011A: Swift/UVOT Observations of a Possible Optical Afterglow
  36. GRB 101011A: Swift-BAT refined analysis
  37. GRB 101008A: Fermi GBM observation
  38. GRB 101008A: MASTER prompt optical observations (correction to GCN#11328)
  39. GRB 101008A: MASTER prompt optical observations
  40. GRB 101008A: Swift-BAT refined analysis
  41. GRB101008A, GROND detection of a fading afterglow
  42. GRB 101008A: Swift-XRT refined analysis
  43. GRB 101008A: SAO RAS optical observations
  44. GRB 100915 optical upper limit
  45. GRB 101008: Swift/UVOT Upper Limits
  46. GRB 100728B: X-shooter redshift
  47. GRB 100925A / MAXI J1659-152: MASTER optical observations
  48. GRB 100924A: Suzaku WAM observation of the prompt emission
  49. GRB 100928A, Swift-BAT refined analysis
  50. GRB 100924A: Fermi GBM observation
  51. GRB 100925A / MAXI J1659-152: WSRT Radio and Polarization Detection
  52. GRB 100925A / MAXI J1659-152: Optical observation with the Kottamia 188cm telescope
  53. GRB100925A/MAXI J1659-152: X-shooter identification as an X-ray binary
  54. GRB100925A/MAXI J1659-152 MITSuME Ishigakijima and Okayama Optical Observation
  55. GRB 100925A / MAXI J1659-152: SARA-S Observations
  56. GRB100925A/MAXI J1659-152: Galactic origin from SED analysis
  57. GRB 100925A/MAXI J1659-152 - NOT optical observations
  58. GRB 100925A / MAXI J1659-152: BOOTES-2/TELMA and IAC80 optical observations
  59. MAXI J1659-152: Swift-BAT refined analysis (triggers 434928 and 434931)
  60. GRB 100925A: Nearby DSS Source - SN-GRB or new Galactic transient?
  61. GRB100925A UVOT afterglow
  62. GRB 100924A: GROND detection of an optical/NIR afterglow
  63. GRB 100924A: Swift-BAT refined analysis
  64. GRB100906A: Ashra-1 observation of early optical emission
  65. GRB 100917A: Swift-BAT refined analysis
  66. GRB100915A: MITSuME Ishigakijima Optical upper limits
  67. GRB 100915B: GRT Optical Observation
  68. GRB 100915A: GRT Optical Observation
  69. GRB 100915B: Fermi GBM observation
  70. GRB 100915A: Correction to Swift-BAT refined analysis
  71. GRB 100915A: Swift/UVOT Upper Limits
  72. GRB 100915A: Swift-BAT refined analysis
  73. GRB 100915A: Swift-XRT refined analysis
  74. GRB100909A: MITSuME Ishigakijima Optical upper limits
  75. GRB 100909A: Swift/UVOT observations
  76. GRB 100901A: errata of GRB name in GCN 11270
  77. GRB 100901A: optical observations in Mondy and R-light curve
  78. GRB 100909A: Swift-XRT refined analysis
  79. GRB 100906A: optical observations at Mt.Terskol
  80. GRB 100901A: optical observation in Maidanak, break confirmation
  81. GRB 100909A: Faulkes Telescope North afterglow candidate
  82. GRB 100909A: ROTSE-III Optical Limits
  83. GRB 100902A : Confirmation of afterglow and re-brightening with CFHT r’-band imaging
  84. GRB100901A: IAO optical upper limits at 4 days after the burst
  85. EVLA detection of radio afterglow of GRB100901A
  86. GRB 100901A: Confirmation of WSRT Radio Detection
  87. GRB 100901A: CrAO optical observations
  88. GRB 100906A: RTT150 optical observations
  89. GRB 100906A: GRAS-007 optical observations
  90. GRB100906A: R band observations
  91. Konus-Wind observation of GRB 100906A
  92. GRB100906A: Optical observations at IAO
  93. GRB 100906A: Fermi GBM observation
  94. GRB 100906A: TLS Monitoring
  95. GRB 100901A: TLS Detection at 5.5 days
  96. GRB 100906A: Observations at the Virtual Telescope
  97. GRB 100906A: Swift-XRT refined analysis
  98. GRB 100906A: Swift/UVOT Observations
  99. GRB100906A: Errata of MITSuME Okayama about observation time
  100. GRB100906A: MITSuME Okayama Optical Observation

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