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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"

32721 results found.

  1. GRB 110422A: tentative redshift from TNG
  2. GRB 110422A: Suzaku WAM observation of the prompt emission
  3. GRB110422A: NOT optical follow-ups
  4. GRB 110422A: optical observations in CrAO
  5. GRB110422A: MITSuME Ishigakijima Optical Observation
  6. Konus-Wind observation of GRB 110422A
  7. GRB 110422A: Further NOT observation
  8. GRB 110422A: Swift/UVOT Detection of optical afterglow
  9. GRB 110422A: Swift-XRT refined Analysis
  10. GRB 110422A: CQUEAN griz Observation
  11. GRB 110422A: THO optical observations
  12. GRB 110422A: correction to the GCN circ. 11958
  13. GRB 110422A: TNG optical observations
  14. GRB 110422A: SAO RAS optical observations
  15. GRB 110422A: NOT optical observation
  16. GRB 110422A: MASTER earlier OT polarization observations
  17. GRB 110422A: Swift-BAT refined analysis
  18. GRB 110422A: Mondy optical observations
  19. GRB 110420B: Swift/UVOT Upper Limits
  20. GRB110420A: GROND detection of the Optical/NIR Afterglow Candidate
  21. GRB 110420B: Swift-XRT afterglow candidate retraction
  22. GRB 110420B: Fermi GBM observation
  23. Konus-Wind observation of GRB 110420A
  24. GRB 110420B, GROND observations
  25. GRB 110420A Swift/UVOT Observations
  26. GRB 110420B: Swift-XRT afterglow candidate
  27. GRB 110420B: Swift-BAT refined analysis
  28. GRB 110420A: Swift-BAT refined analysis
  29. GRB 110420A: Swift-XRT refined Analysis
  30. GRB110414A: MITSuME Ishigakijima Optical upper limits
  31. GRB 110414A: GROND upper limits
  32. GRB110414A: MITSuME Okayama Optical upper limits
  33. GRB 110414A: Swift-BAT Refined Analysis
  34. GRB 110414A: Swift/UVOT Upper limits
  35. GRB 110414A: Swift-XRT refined Analysis
  36. GRB 110328A / Swift J164449.3+573451: WISE quiescent source upper limit
  37. GRB 110414A : Faulkes Telescope North observations
  38. GRB 110411A: PAIRITEL NIR Upper Limits
  39. GRB 110412A: Swift-BAT refined analysis
  40. GRB 110411A: Swift-XRT refined Analysis
  41. GRB 110412A: Fermi GBM observation
  42. GRB 110411A: Swift/UVOT Upper Limits
  43. GRB 110411A: MASTER prompt and follow-up optical limits
  44. GRB 110411A : Xinglong TNT OT candidate
  45. GRB 110411A, Swift-BAT refined analysis
  46. GRB 110328A / Swift J164449.3+573451: R-band Monitoring
  47. GRB 110407A: Swift-XRT refined Analysis
  48. GRB 110328A / Swift J164449.3+573451: MASTER pre, prompt and follow-up observations
  49. GRB 110407A:VLF observations on 20.27kHz
  50. GRB 110328A / Swift J164449.3+573451: optical observations
  51. GRB 110407A: SMARTS optical limit
  52. GRB 110328A / Swift J164449.3+573451: VLBA Observations
  53. GRB 110328A/Swift J164449.3+573451 UVOT Upper Limits
  54. GRB 110406A: Positional coincidence with NGC 404
  55. GRB 110407A: MASTER optical observations
  56. GRB110407A: UVOT Upper Limits
  57. GRB 110407A: GROND Detection of the Optical Afterglow
  58. GRB 110407A: MITSuME Okayama and Ishigakijima Optical upper limits
  59. GRB 110407A: NOT optical observations
  60. GRB 110407A: Swift-BAT refined analysis
  61. GRB 100407A : Errata of afterglow position in GCN 11899
  62. IPN triangulation of the bright GRB110406A
  63. GRB 110407A : Lulin optical afterglow detection
  64. GRB 110407A : Xinglong TNT upper limit
  65. Konus-Wind observation of GRB 110406A
  66. GRB 110328A/Swift J164449.3+573451: BAT recent rate increase and pre-outburst,light curve
  67. GRB 110402A: fading optical afterglow
  68. GRB 110328/Swift J164449.3+573451: Chandra observations
  69. GRB 110402A: LOAO Optical Observation
  70. ICSP VLF observation of multiple SGR-like bursts from 1E 1841-045 on Feb. 9, 2011
  71. Comparison of ICSP VLF observation of GRB 090424 with satellite observations
  72. GRB 110328A / Swift J164449.3+573451: Keck LRIS R-band photometry
  73. GRB 110328A / Swift J164449.3+573451, HST Observations
  74. GRB 110328A / Swift J164449.3+573451: millimeter detection at PdBI
  75. GRB 110402A: Konus-Wind spectral lags and detailed energetics
  76. GRB 110402A: Fermi GBM detection
  77. GRB 110402A: optical observations in Mondy
  78. GRB 110402A afterglow observation
  79. GRB 110328A / Swift J164449.3+573451: Keck/DEIMOS Optical Spectroscopy
  80. GRB 110402A: MITSuME Okayama and Ishigakijima Optical upper limits
  81. GRB 110328A/Swift J164449.3+573451: SARA-N detection
  82. GRB 110402A: Swift/UVOT detection of afterglow candidate
  83. Konus-Wind observation of GRB 110402A
  84. GRB 110402A: Konkoly observations
  85. GRB 110328A: Konkoly observations.
  86. GRB 110402A: Swift-BAT refined analysis
  87. GRB 110402A: Swift-XRT refined Analysis
  88. GRB 110402A: further NOT observations
  89. GRB110328A/Swift J164449.3+573451: Fermi LAT Observations
  90. GRB 110402A: PAIRITEL NIR Upper Limits
  91. GRB 110402A: NOT afterglow confirmation
  92. GRB 110402A: Liverpool Telescope Observations
  93. GRB 110328A / Swift J164449.3+573451: KASINICS NIR Observation
  94. GRB 110328A / Swift J164449.3+57345: Correction to GCN 11850
  95. GRB 110328A / Swift J164449.3+573451: Radio-optical/NIR Astrometry
  96. GRB 110328A / Swift J164449.3+573451: Infrared transient
  97. GRB 110328A / Swift J164449.3+573451: Mondy optical observations
  98. GRB 110328A / Swift J164449.3+573451: KASINICS K-band Observation
  99. GRB 110328A / Swift J164449.3+573451: EVLA observations of a brightening radio source
  100. GRB 110328A / Swift J164449.3+573451: X-ray analysis and a mini-blazar analogy

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