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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"

45723 results found.

  1. If the SN/GRB connection confirmed
  2. GRB 030329: Supernova Confirmed
  3. GRB030329: RTT150 optical observations
  4. GRB030329: Near Infrared Observations at Gunma
  5. GRB030329: HET spectroscopic monitoring
  6. Kiso observation of the GRB030329 at April 6
  7. GRB 030329, color evolution
  8. GRB030328, UBVRcIc field photometry
  9. GRB030329: Optical observcations
  10. GRB030329: BV photographic observations
  11. GRB 030329 Optical observations
  12. GRB 030329, color evolution
  13. GRB 030329: possible color change
  14. GRB030329: RTT150 optical observations
  15. GRB 030329: Supernova Spectrum Emerging
  16. GRB030329: Kiso B and R band observations
  17. GRB030329: RTT150 optical observation
  18. GRB030329: More AAVSO VR obs
  19. GRB030328: R upper limit after 6 hours by MASTER
  20. GRB 030329: BV photographic observations
  21. GRB 030329: SARA Optical Observations
  22. GRB 030329: SARA Optical Observations
  23. GRB030329, fading resumes
  24. GRB 030329, BVRI photometry
  25. GRB030329: Optical observations
  26. SDSS 0.5m PT observations of GRB030329 (correction)
  27. SDSS 0.5m PT observations of GRB030329
  28. GRB 030329, Optical observations
  29. GRB 030329, nearby galaxies
  30. GRB030329, cessation of fading
  31. GRB030329: final R-band light curve by MASTER
  32. GRB030329 - more 15 GHz radio data
  33. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  34. GRB 030329: Sub-millimeter detection
  35. GRB 030329: SARA Optical Observations
  36. GRB 030329: SARA Optical Observations
  37. OT GRB light curves and SN predictions
  38. GRB030329, optical observation
  39. GRB030329, optical observation
  40. GRB030329, new UBVRcIc field photometry
  41. GRB 030329, light curve and SN prediction
  42. GRB030329: optical observations at Tokyo Tech
  43. GRB 030329: optical observations
  44. GRB030329: multiple re-brightening phases
  45. GRB 030329, BRI photometry
  46. GRB030328: Full Observation, X-ray Fading and Spectrum Measured
  47. GRB 030329 , SPM optical observations
  48. GRB030329: Optical observations at Teramo
  49. GRB 030329: Radio observations at GMRT
  50. GRB030329: more 15GHz observations
  51. Further AAVSO V,B,R observations of GRB030329
  52. GRB 030329: Additional Mt. Laguna Optical Observations
  53. GRB 030329: SARA Optical Observations
  54. GRB 030329: Observations with ANDICAM
  55. GRB030329: Optical observations
  56. GRB030329: further optical photometry and evidence for a light curve discontinuity
  57. GRB 030329: Correction to GCN 2056
  58. GRB 030329: fitting parameters and re-brightening
  59. GRB 030329: KAIT optical photometry
  60. GRB030329 Further RBO Optical Observations
  61. triangulation of GRB 030331 (single error box)
  62. GRB030329 - OT rebrightens
  63. GRB 030329: SARA Optical Observations
  64. AAVSO V & R observations of GRB030329
  65. IPN triangulation of GRB030331 (annulus)
  66. GRB 030329: optical observations
  67. IPN triangulation of GRB030329b (large error box)
  68. GRB 030329: beginning of the new fading phase in optical band
  69. GRB 030329, optical spectroscopy
  70. GRB 030329: fading X-ray afterglow with RXTE
  71. GRB 030329: optical photometry
  72. GRB030329: Optical observations
  73. Photometry of GRB030329 - Constant OT Magnitude
  74. GRB 030329, R-band observations
  75. GRB 030329, R-band light curve
  76. GRB 030329: further optical observations
  77. GRB030329 - OT brightens
  78. GRB 030329: OT observations at Kanazawa
  79. GRB030329 15 GHz radio observation
  80. GRB 030329 RBO V Optical Observations
  81. GRB 030329, optical photometry
  82. GRB030329: Near Infrared Observations
  83. 030331 NOT A GRB
  84. INTEGRAL GRB 030331
  85. GRB 030324: Optical and NIR Observations
  86. GRB 030328, optical photometry
  87. GRB030329: R band light curve by MASTER
  88. GRB030329 - Light curve flattening
  89. GRB 030329: SARA Optical Observations
  90. GRB 030324, optical search
  91. GRB030329 - near contemporaneous optical limits from CONCAM
  92. GRB030329: R and B observations
  93. GRB 030329, optical observations
  94. GRB030329: Optical observations
  95. GRB030328: X-ray Fading and Spectrum Measured with Chandra
  96. GRB030329a: detection by Konus-Wind
  97. GRB030329b: detection by Konus-Wind and Helicon-CoronasF
  98. GRB 030329: Light curve observed during the change of its slope.
  99. GRB030329, BVRcIc field photometry
  100. GRB030329, SPM optical observations

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