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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"

36190 results found.

  1. GRB 030329: SARA Optical Observations
  2. GRB 030329: SARA Optical Observations
  3. GRB030329, fading resumes
  4. GRB 030329, BVRI photometry
  5. SDSS 0.5m PT observations of GRB030329 (correction)
  6. SDSS 0.5m PT observations of GRB030329
  7. GRB 030329, Optical observations
  8. GRB 030329, nearby galaxies
  9. GRB030329, cessation of fading
  10. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  11. GRB 030329: Sub-millimeter detection
  12. GRB 030329: SARA Optical Observations
  13. GRB 030329: SARA Optical Observations
  14. OT GRB light curves and SN predictions
  15. GRB030329, optical observation
  16. GRB030329, new UBVRcIc field photometry
  17. GRB 030329, light curve and SN prediction
  18. GRB030329: optical observations at Tokyo Tech
  19. GRB 030329: optical observations
  20. GRB030329: multiple re-brightening phases
  21. GRB 030329, BRI photometry
  22. GRB 030329 , SPM optical observations
  23. GRB 030329: Radio observations at GMRT
  24. Further AAVSO V,B,R observations of GRB030329
  25. GRB 030329: Additional Mt. Laguna Optical Observations
  26. GRB 030329: SARA Optical Observations
  27. GRB 030329: Observations with ANDICAM
  28. GRB030329: further optical photometry and evidence for a light curve discontinuity
  29. GRB 030329: Correction to GCN 2056
  30. GRB 030329: fitting parameters and re-brightening
  31. GRB 030329: KAIT optical photometry
  32. GRB030329 Further RBO Optical Observations
  33. triangulation of GRB 030331 (single error box)
  34. GRB030329 - OT rebrightens
  35. GRB 030329: SARA Optical Observations
  36. AAVSO V & R observations of GRB030329
  37. IPN triangulation of GRB030331 (annulus)
  38. GRB 030329: optical observations
  39. IPN triangulation of GRB030329b (large error box)
  40. GRB 030329: beginning of the new fading phase in optical band
  41. GRB 030329, optical spectroscopy
  42. GRB 030329: fading X-ray afterglow with RXTE
  43. GRB 030329: optical photometry
  44. Photometry of GRB030329 - Constant OT Magnitude
  45. GRB 030329, R-band observations
  46. GRB 030329, R-band light curve
  47. GRB 030329: further optical observations
  48. GRB030329 - OT brightens
  49. GRB 030329: OT observations at Kanazawa
  50. GRB030329 15 GHz radio observation
  51. GRB 030329 RBO V Optical Observations
  52. GRB 030329, optical photometry
  53. GRB030329: Near Infrared Observations
  54. 030331 NOT A GRB
  55. INTEGRAL GRB 030331
  56. GRB 030324: Optical and NIR Observations
  57. GRB 030328, optical photometry
  58. GRB030329: R band light curve by MASTER
  59. GRB030329 - Light curve flattening
  60. GRB 030329: SARA Optical Observations
  61. GRB 030324, optical search
  62. GRB030329 - near contemporaneous optical limits from CONCAM
  63. GRB 030329, optical observations
  64. GRB 030329: Light curve observed during the change of its slope.
  65. GRB030329, BVRcIc field photometry
  66. GRB030329, SPM optical observations
  67. GRB 030329: Optical Decay
  68. Redshift of GRB 030329
  69. GRB030329: ROTSE network observes steepening of decay curve
  70. GRB 030329, optical photometry
  71. GRB 030329: Optical decay and synthesis
  72. GRB 030329: Radio Observations
  73. GRB 030329, optical spectroscopy
  74. GRB 030329: still bright
  75. GRB 030329: Optical pre-Imaging
  76. GRB 030329: visual observations
  77. GRB 030329: Upper limit from 5.6 hours before trigger
  78. GRB030328: R optical observation
  79. GRB 030323: Gemini South VRI obsevations.
  80. GRB030329: Optical observations
  81. GRB 030329, R-band observations, supplement
  82. GRB030329:optical observations by MASTER
  83. GRB 030329: optical observations
  84. GRB 030329, R-band observations
  85. GRB 030329: OT B and R photometry, decline rate
  86. GRB030329: Upper limits from recent and historical observations.
  87. GRB030329 (=H2652): A Long, Extremely Bright GRB Localized by the HETE WXM and SXC
  88. RXTE detection of GRB 030329 afterglow
  89. GRB 030329: Optical Afterglow Observations
  90. GRB 030329: precise position from Kyoto images
  91. GRB 030328 Optical Observations
  92. GRB 030328: Optical observations
  93. GRB 030328: optical observations
  94. GRB 030329: Optical afterglow fading
  95. GRB 030329 follow-up
  96. GRB 030329: Optical afterglow candidate
  97. GRB 030329: OT candidate
  98. GRB 030329: Optical afterglow candidate
  99. GRB 030328: OT photometry
  100. VLT spectra of GRB 030328

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