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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"

24511 results found.

  1. GRB 120327A: MITSuME Ishigakijima Optical Upper Limits at 1 day afterthe burst
  2. Swift trigger 518853: MASTER-ICATE possible OT
  3. GRB 120328B: Fermi-LAT Observations
  4. GRB 120328B: Fermi GBM detection
  5. long/intense GRB 120328B: MASTER follow up observations
  6. GRB 120328A: Swift-XRT refined Analysis
  7. Konus-Wind observation of GRB 120328B
  8. IPN Triangulation of GRB 120328B (long/intense)
  9. GRB 120327A: MITSuME Ishigakijima Optical Observation
  10. GRB 120326A: MITSuME Ishigakijima Optical Observation
  11. GRB 120328A: Swift-BAT refined analysis
  12. GRB 120327A: NOT optical observations
  13. GRB 120326A: Xinglong TNT further optical observation��correction for GCN Cir 13149)
  14. GRB 120326A: Xinglong TNT further optical observation
  15. Skynet/PROMPT observations of GRB120328A
  16. GRB 120326A: Fermi GBM Observation
  17. GRB 120326A: PAIRITEL NIR Observations
  18. GRB 120326A: LOAO R-band Observations
  19. GRB 120327A: Swift-BAT refined analysis
  20. GRB 120327A: X-shooter redshift
  21. GRB 120327A: IAC80 I-band observations
  22. GRB 120327A: REM NIR and optical observations
  23. GRB 120327A: Liverpool Telescope Observations
  24. GRB 120326A: optical observation of GMG
  25. GRB 120326A: Swift-BAT refined analysis
  26. GRB 120326A: T17 optical observations
  27. GRB 120326A: CQUEAN grizY Observation
  28. GRB 120323A: MASTER follow up observations
  29. GRB 120326A: Swift-XRT refined Analysis
  30. GRB 120326A: Swift/UVOT Detection
  31. GRB 120326A: Optical observations at Crni Vrh
  32. GRB 120326A: Liverpool Telescope observations
  33. Skynet/Dolomiti Observations of GRB120326A
  34. GRB 120326A: ROTSE-III Optical Limits
  35. GRB 120323A: Fermi LAT observations
  36. Konus-Wind observation of GRB 120323A
  37. GRB 120324A: Swift-XRT refined Analysis
  38. Konus-Wind observation of GRB 120324A
  39. GRB 120323A: Fermi GBM detection
  40. GRB 120324A: Swift-BAT refined analysis
  41. GRB 120324A: Liverpool Telescope optical candidate
  42. GRB 120324A: Swift detection of a burst
  43. GRB 120316A : Suzaku WAM observation of the prompt emission
  44. GRB 120316A: Fermi-GBM and Fermi-LAT Observations
  45. GRB 120320A: MITSuME Okayama Optical upper limits
  46. GRB 120320A, Swift-BAT refined analysis
  47. GRB 120320A: Gemini-N and UKIRT observations
  48. Konus-Wind observation of GRB 120316A
  49. IPN Triangulation of GRB 120316A
  50. GRB 120320A: MASTER optical observations
  51. GRB 120320A: Swift detection of a burst
  52. GBM trigger 353549464 (GRB 120316A?) : High-energy photon emission in Fermi/LAT data
  53. GRB 120312A: MASTER-NET optical observations
  54. GRB 120312A: Swift-BAT refined analysis
  55. GRB 120311A: VLT/X-shooter observations
  56. GRB 120311B: MITSuME Okayama Optical upper limits
  57. GRB 120311B: Faulkes Telescope North observations
  58. GRB 120311A: Swift-XRT refined Analysis
  59. GRB 120311B: Swift-BAT refined analysis
  60. GRB 120311A, Swift-BAT refined analysis
  61. GRB 120311B: Swift detection of a burst
  62. GRB 120311A: Liverpool Telescope optical candidate
  63. GRB 120311A: Swift detection of a burst
  64. GRB 120308A : LOAO optical observation
  65. GRB120308A: MITSuME Ishigakijima Optical Upper Limits
  66. GRB 120308A: Swift-XRT refined Analysis
  67. GRB 120308A: Swift-BAT refined analysis
  68. GRB 120308A: IAC80 I-band observations
  69. GRB 120308A: PAIRITEL NIR observations
  70. GRB 120308A: confirmation of the optical afterglow
  71. GRB 120308A: Liverpool Telescope optical afterglow candidate
  72. GRB 120308A: Swift detection of a burst
  73. GRB 120302A: Fermi GBM Observation
  74. GRB 120305A: Swift-BAT refined analysis
  75. GRB 120305A - Liverpool Telescope Observations
  76. GRB 120305A: MASTER-NET early optical observations
  77. GRB 120302A: GROND detection of an afterglow candidate
  78. GRB 120302A, Swift-BAT refined analysis
  79. GRB 120229A, Swift-BAT refined analysis
  80. GRB 120229A: Swift detection of a short burst
  81. Konus-Wind observation of GRB 120226A
  82. GRB 120226A: Fermi-GBM and Fermi-LAT detections; LAT position retraction
  83. GRB 120226A: Fermi-LAT data analysis
  84. IPN Triangulation of GRB 120226A
  85. GRB 120224A: optical observation in Mondy observatory
  86. GRB 120226A: Fermi-LAT detection of a burst
  87. GRB 120224A: GROND detection of the afterglow candidate
  88. GRB 120224A: Swift-XRT refined Analysis
  89. GRB 120224A: Swift-BAT refined analysis
  90. GRB 120224A: FTN optical observations
  91. GRB 120224A: Swift detection of a burst
  92. GRB 120219A: MASTER prompt and early optical limit and OT discussion
  93. GRB120219A: Keck Observations
  94. GRB 120215A: MITSuME Akeno Optical upper limits
  95. GRB 120219A: MITSuME Okayama Optical upper limits
  96. GRB 120219A: Swift-BAT refined analysis
  97. GRB120219A: TNT optical afterglow candidates
  98. GRB 120219A: MASTER-NET prompt and early optical observations
  99. GRB 120219A: Swift detection of a burst
  100. GRB 120218A: Swift-BAT refined analysis

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