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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"

37677 results found.

  1. OT GRB light curves and SN predictions
  2. GRB030329, optical observation
  3. GRB030329, new UBVRcIc field photometry
  4. GRB 030329, light curve and SN prediction
  5. GRB030329: optical observations at Tokyo Tech
  6. GRB 030329: optical observations
  7. GRB030329: multiple re-brightening phases
  8. GRB 030329, BRI photometry
  9. GRB 030329 , SPM optical observations
  10. GRB 030329: Radio observations at GMRT
  11. Further AAVSO V,B,R observations of GRB030329
  12. GRB 030329: Additional Mt. Laguna Optical Observations
  13. GRB 030329: SARA Optical Observations
  14. GRB 030329: Observations with ANDICAM
  15. GRB030329: further optical photometry and evidence for a light curve discontinuity
  16. GRB 030329: Correction to GCN 2056
  17. GRB 030329: fitting parameters and re-brightening
  18. GRB 030329: KAIT optical photometry
  19. GRB030329 Further RBO Optical Observations
  20. triangulation of GRB 030331 (single error box)
  21. GRB030329 - OT rebrightens
  22. GRB 030329: SARA Optical Observations
  23. AAVSO V & R observations of GRB030329
  24. IPN triangulation of GRB030331 (annulus)
  25. GRB 030329: optical observations
  26. IPN triangulation of GRB030329b (large error box)
  27. GRB 030329: beginning of the new fading phase in optical band
  28. GRB 030329, optical spectroscopy
  29. GRB 030329: fading X-ray afterglow with RXTE
  30. GRB 030329: optical photometry
  31. Photometry of GRB030329 - Constant OT Magnitude
  32. GRB 030329, R-band observations
  33. GRB 030329, R-band light curve
  34. GRB 030329: further optical observations
  35. GRB030329 - OT brightens
  36. GRB 030329: OT observations at Kanazawa
  37. GRB030329 15 GHz radio observation
  38. GRB 030329 RBO V Optical Observations
  39. GRB 030329, optical photometry
  40. GRB030329: Near Infrared Observations
  41. 030331 NOT A GRB
  42. INTEGRAL GRB 030331
  43. GRB 030324: Optical and NIR Observations
  44. GRB 030328, optical photometry
  45. GRB030329: R band light curve by MASTER
  46. GRB030329 - Light curve flattening
  47. GRB 030329: SARA Optical Observations
  48. GRB 030324, optical search
  49. GRB030329 - near contemporaneous optical limits from CONCAM
  50. GRB 030329, optical observations
  51. GRB 030329: Light curve observed during the change of its slope.
  52. GRB030329, BVRcIc field photometry
  53. GRB030329, SPM optical observations
  54. GRB 030329: Optical Decay
  55. Redshift of GRB 030329
  56. GRB030329: ROTSE network observes steepening of decay curve
  57. GRB 030329, optical photometry
  58. GRB 030329: Optical decay and synthesis
  59. GRB 030329: Radio Observations
  60. GRB 030329, optical spectroscopy
  61. GRB 030329: still bright
  62. GRB 030329: Optical pre-Imaging
  63. GRB 030329: visual observations
  64. GRB 030329: Upper limit from 5.6 hours before trigger
  65. GRB030328: R optical observation
  66. GRB 030323: Gemini South VRI obsevations.
  67. GRB030329: Optical observations
  68. GRB 030329, R-band observations, supplement
  69. GRB030329:optical observations by MASTER
  70. GRB 030329: optical observations
  71. GRB 030329, R-band observations
  72. GRB 030329: OT B and R photometry, decline rate
  73. GRB030329: Upper limits from recent and historical observations.
  74. GRB030329 (=H2652): A Long, Extremely Bright GRB Localized by the HETE WXM and SXC
  75. RXTE detection of GRB 030329 afterglow
  76. GRB 030329: Optical Afterglow Observations
  77. GRB 030329: precise position from Kyoto images
  78. GRB 030328 Optical Observations
  79. GRB 030328: Optical observations
  80. GRB 030328: optical observations
  81. GRB 030329: Optical afterglow fading
  82. GRB 030329 follow-up
  83. GRB 030329: Optical afterglow candidate
  84. GRB 030329: OT candidate
  85. GRB 030329: Optical afterglow candidate
  86. GRB 030328: OT photometry
  87. VLT spectra of GRB 030328
  88. GRB 030328, optical spectroscopy
  89. GRB 030328, optical observations
  90. GRB030328 (=H2650): A Long, Bright GRB Localized by the HETE WXM and SXC
  91. GRB 030328: Optical observations
  92. Re: GRB 030328: Finding chart
  93. GRB 030328: Finding chart
  94. GRB 030328: Optical afterglow candidate
  95. GRB030131, BVRcIc field photometry
  96. Possible GRB030323 localized by INTEGRAL
  97. IPN triangulation of GRB030325 (final analysis)
  98. IPN triangulation of GRB030326 (single small error box)
  99. GRB 030323: SARA Optical Observations
  100. IPN triangulation of GRB030325 (single small error box)

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