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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"

36115 results found.

  1. GRB 030329 VLBA Observations
  2. IPN triangulation of GRB030406 (small error box)
  3. IPN triangulation of GRB050403 (small error box)
  4. IPN triangulation of GRB030403 (annulus)
  5. GRB 030329: BVRI photometry at Asiago
  6. GRB 030329, light curve flattens
  7. GRB 030329: VLT V-band photometry
  8. If the SN/GRB connection confirmed
  9. GRB 030329: Supernova Confirmed
  10. GRB030329: RTT150 optical observations
  11. GRB030329: Near Infrared Observations at Gunma
  12. GRB030329: HET spectroscopic monitoring
  13. Kiso observation of the GRB030329 at April 6
  14. GRB 030329, color evolution
  15. GRB030328, UBVRcIc field photometry
  16. GRB 030329 Optical observations
  17. GRB 030329, color evolution
  18. GRB 030329: possible color change
  19. GRB030329: RTT150 optical observations
  20. GRB 030329: Supernova Spectrum Emerging
  21. GRB030329: Kiso B and R band observations
  22. GRB030329: RTT150 optical observation
  23. GRB030329: More AAVSO VR obs
  24. GRB030328: R upper limit after 6 hours by MASTER
  25. GRB 030329: BV photographic observations
  26. GRB 030329: SARA Optical Observations
  27. GRB 030329: SARA Optical Observations
  28. GRB030329, fading resumes
  29. GRB 030329, BVRI photometry
  30. SDSS 0.5m PT observations of GRB030329 (correction)
  31. SDSS 0.5m PT observations of GRB030329
  32. GRB 030329, Optical observations
  33. GRB 030329, nearby galaxies
  34. GRB030329, cessation of fading
  35. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  36. GRB 030329: Sub-millimeter detection
  37. GRB 030329: SARA Optical Observations
  38. GRB 030329: SARA Optical Observations
  39. OT GRB light curves and SN predictions
  40. GRB030329, optical observation
  41. GRB030329, new UBVRcIc field photometry
  42. GRB 030329, light curve and SN prediction
  43. GRB030329: optical observations at Tokyo Tech
  44. GRB 030329: optical observations
  45. GRB030329: multiple re-brightening phases
  46. GRB 030329, BRI photometry
  47. GRB 030329 , SPM optical observations
  48. GRB 030329: Radio observations at GMRT
  49. Further AAVSO V,B,R observations of GRB030329
  50. GRB 030329: Additional Mt. Laguna Optical Observations
  51. GRB 030329: SARA Optical Observations
  52. GRB 030329: Observations with ANDICAM
  53. GRB030329: further optical photometry and evidence for a light curve discontinuity
  54. GRB 030329: Correction to GCN 2056
  55. GRB 030329: fitting parameters and re-brightening
  56. GRB 030329: KAIT optical photometry
  57. GRB030329 Further RBO Optical Observations
  58. triangulation of GRB 030331 (single error box)
  59. GRB030329 - OT rebrightens
  60. GRB 030329: SARA Optical Observations
  61. AAVSO V & R observations of GRB030329
  62. IPN triangulation of GRB030331 (annulus)
  63. GRB 030329: optical observations
  64. IPN triangulation of GRB030329b (large error box)
  65. GRB 030329: beginning of the new fading phase in optical band
  66. GRB 030329, optical spectroscopy
  67. GRB 030329: fading X-ray afterglow with RXTE
  68. GRB 030329: optical photometry
  69. Photometry of GRB030329 - Constant OT Magnitude
  70. GRB 030329, R-band observations
  71. GRB 030329, R-band light curve
  72. GRB 030329: further optical observations
  73. GRB030329 - OT brightens
  74. GRB 030329: OT observations at Kanazawa
  75. GRB030329 15 GHz radio observation
  76. GRB 030329 RBO V Optical Observations
  77. GRB 030329, optical photometry
  78. GRB030329: Near Infrared Observations
  79. 030331 NOT A GRB
  80. INTEGRAL GRB 030331
  81. GRB 030324: Optical and NIR Observations
  82. GRB 030328, optical photometry
  83. GRB030329: R band light curve by MASTER
  84. GRB030329 - Light curve flattening
  85. GRB 030329: SARA Optical Observations
  86. GRB 030324, optical search
  87. GRB030329 - near contemporaneous optical limits from CONCAM
  88. GRB 030329, optical observations
  89. GRB 030329: Light curve observed during the change of its slope.
  90. GRB030329, BVRcIc field photometry
  91. GRB030329, SPM optical observations
  92. GRB 030329: Optical Decay
  93. Redshift of GRB 030329
  94. GRB030329: ROTSE network observes steepening of decay curve
  95. GRB 030329, optical photometry
  96. GRB 030329: Optical decay and synthesis
  97. GRB 030329: Radio Observations
  98. GRB 030329, optical spectroscopy
  99. GRB 030329: still bright
  100. GRB 030329: Optical pre-Imaging

Advanced

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