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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"

36217 results found.

  1. GRB 030329 and SN 2003dh
  2. GRB030329, optical position
  3. GRB 030329 VLBA Observations
  4. IPN triangulation of GRB030406 (small error box)
  5. IPN triangulation of GRB050403 (small error box)
  6. IPN triangulation of GRB030403 (annulus)
  7. GRB 030329: BVRI photometry at Asiago
  8. GRB 030329, light curve flattens
  9. GRB 030329: VLT V-band photometry
  10. If the SN/GRB connection confirmed
  11. GRB 030329: Supernova Confirmed
  12. GRB030329: RTT150 optical observations
  13. GRB030329: Near Infrared Observations at Gunma
  14. GRB030329: HET spectroscopic monitoring
  15. Kiso observation of the GRB030329 at April 6
  16. GRB 030329, color evolution
  17. GRB030328, UBVRcIc field photometry
  18. GRB 030329 Optical observations
  19. GRB 030329, color evolution
  20. GRB 030329: possible color change
  21. GRB030329: RTT150 optical observations
  22. GRB 030329: Supernova Spectrum Emerging
  23. GRB030329: Kiso B and R band observations
  24. GRB030329: RTT150 optical observation
  25. GRB030329: More AAVSO VR obs
  26. GRB030328: R upper limit after 6 hours by MASTER
  27. GRB 030329: BV photographic observations
  28. GRB 030329: SARA Optical Observations
  29. GRB 030329: SARA Optical Observations
  30. GRB030329, fading resumes
  31. GRB 030329, BVRI photometry
  32. SDSS 0.5m PT observations of GRB030329 (correction)
  33. SDSS 0.5m PT observations of GRB030329
  34. GRB 030329, Optical observations
  35. GRB 030329, nearby galaxies
  36. GRB030329, cessation of fading
  37. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  38. GRB 030329: Sub-millimeter detection
  39. GRB 030329: SARA Optical Observations
  40. GRB 030329: SARA Optical Observations
  41. OT GRB light curves and SN predictions
  42. GRB030329, optical observation
  43. GRB030329, new UBVRcIc field photometry
  44. GRB 030329, light curve and SN prediction
  45. GRB030329: optical observations at Tokyo Tech
  46. GRB 030329: optical observations
  47. GRB030329: multiple re-brightening phases
  48. GRB 030329, BRI photometry
  49. GRB 030329 , SPM optical observations
  50. GRB 030329: Radio observations at GMRT
  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: further optical photometry and evidence for a light curve discontinuity
  56. GRB 030329: Correction to GCN 2056
  57. GRB 030329: fitting parameters and re-brightening
  58. GRB 030329: KAIT optical photometry
  59. GRB030329 Further RBO Optical Observations
  60. triangulation of GRB 030331 (single error box)
  61. GRB030329 - OT rebrightens
  62. GRB 030329: SARA Optical Observations
  63. AAVSO V & R observations of GRB030329
  64. IPN triangulation of GRB030331 (annulus)
  65. GRB 030329: optical observations
  66. IPN triangulation of GRB030329b (large error box)
  67. GRB 030329: beginning of the new fading phase in optical band
  68. GRB 030329, optical spectroscopy
  69. GRB 030329: fading X-ray afterglow with RXTE
  70. GRB 030329: optical photometry
  71. Photometry of GRB030329 - Constant OT Magnitude
  72. GRB 030329, R-band observations
  73. GRB 030329, R-band light curve
  74. GRB 030329: further optical observations
  75. GRB030329 - OT brightens
  76. GRB 030329: OT observations at Kanazawa
  77. GRB030329 15 GHz radio observation
  78. GRB 030329 RBO V Optical Observations
  79. GRB 030329, optical photometry
  80. GRB030329: Near Infrared Observations
  81. 030331 NOT A GRB
  82. INTEGRAL GRB 030331
  83. GRB 030324: Optical and NIR Observations
  84. GRB 030328, optical photometry
  85. GRB030329: R band light curve by MASTER
  86. GRB030329 - Light curve flattening
  87. GRB 030329: SARA Optical Observations
  88. GRB 030324, optical search
  89. GRB030329 - near contemporaneous optical limits from CONCAM
  90. GRB 030329, optical observations
  91. GRB 030329: Light curve observed during the change of its slope.
  92. GRB030329, BVRcIc field photometry
  93. GRB030329, SPM optical observations
  94. GRB 030329: Optical Decay
  95. Redshift of GRB 030329
  96. GRB030329: ROTSE network observes steepening of decay curve
  97. GRB 030329, optical photometry
  98. GRB 030329: Optical decay and synthesis
  99. GRB 030329: Radio Observations
  100. GRB 030329, optical spectroscopy

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