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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"

42881 results found.

  1. GRB030328, UBVRcIc field photometry
  2. GRB030329: Optical observcations
  3. GRB030329: BV photographic observations
  4. GRB 030329 Optical observations
  5. GRB 030329, color evolution
  6. GRB 030329: possible color change
  7. GRB030329: RTT150 optical observations
  8. GRB 030329: Supernova Spectrum Emerging
  9. GRB030329: Kiso B and R band observations
  10. GRB030329: RTT150 optical observation
  11. GRB030329: More AAVSO VR obs
  12. GRB030328: R upper limit after 6 hours by MASTER
  13. GRB 030329: BV photographic observations
  14. GRB 030329: SARA Optical Observations
  15. GRB 030329: SARA Optical Observations
  16. GRB030329, fading resumes
  17. GRB 030329, BVRI photometry
  18. GRB030329: Optical observations
  19. SDSS 0.5m PT observations of GRB030329 (correction)
  20. SDSS 0.5m PT observations of GRB030329
  21. GRB 030329, Optical observations
  22. GRB 030329, nearby galaxies
  23. GRB030329, cessation of fading
  24. GRB030329: final R-band light curve by MASTER
  25. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  26. GRB 030329: Sub-millimeter detection
  27. GRB 030329: SARA Optical Observations
  28. GRB 030329: SARA Optical Observations
  29. OT GRB light curves and SN predictions
  30. GRB030329, optical observation
  31. GRB030329, optical observation
  32. GRB030329, new UBVRcIc field photometry
  33. GRB 030329, light curve and SN prediction
  34. GRB030329: optical observations at Tokyo Tech
  35. GRB 030329: optical observations
  36. GRB030329: multiple re-brightening phases
  37. GRB 030329, BRI photometry
  38. GRB030328: Full Observation, X-ray Fading and Spectrum Measured
  39. GRB 030329 , SPM optical observations
  40. GRB 030329: Radio observations at GMRT
  41. GRB030329: more 15GHz observations
  42. Further AAVSO V,B,R observations of GRB030329
  43. GRB 030329: Additional Mt. Laguna Optical Observations
  44. GRB 030329: SARA Optical Observations
  45. GRB 030329: Observations with ANDICAM
  46. GRB030329: Optical observations
  47. GRB030329: further optical photometry and evidence for a light curve discontinuity
  48. GRB 030329: Correction to GCN 2056
  49. GRB 030329: fitting parameters and re-brightening
  50. GRB 030329: KAIT optical photometry
  51. GRB030329 Further RBO Optical Observations
  52. triangulation of GRB 030331 (single error box)
  53. GRB030329 - OT rebrightens
  54. GRB 030329: SARA Optical Observations
  55. AAVSO V & R observations of GRB030329
  56. IPN triangulation of GRB030331 (annulus)
  57. GRB 030329: optical observations
  58. IPN triangulation of GRB030329b (large error box)
  59. GRB 030329: beginning of the new fading phase in optical band
  60. GRB 030329, optical spectroscopy
  61. GRB 030329: fading X-ray afterglow with RXTE
  62. GRB 030329: optical photometry
  63. GRB030329: Optical observations
  64. GRB 030329, R-band light curve
  65. GRB 030329: further optical observations
  66. GRB 030329: OT observations at Kanazawa
  67. GRB030329 15 GHz radio observation
  68. GRB 030329 RBO V Optical Observations
  69. GRB 030329, optical photometry
  70. GRB030329: Near Infrared Observations
  71. 030331 NOT A GRB
  72. GRB 030324: Optical and NIR Observations
  73. GRB 030328, optical photometry
  74. GRB030329: R band light curve by MASTER
  75. GRB030329 - Light curve flattening
  76. GRB 030329: SARA Optical Observations
  77. GRB 030324, optical search
  78. GRB030329 - near contemporaneous optical limits from CONCAM
  79. GRB030329: R and B observations
  80. GRB 030329, optical observations
  81. GRB030329: Optical observations
  82. GRB030328: X-ray Fading and Spectrum Measured with Chandra
  83. GRB030329a: detection by Konus-Wind
  84. GRB030329b: detection by Konus-Wind and Helicon-CoronasF
  85. GRB 030329: Light curve observed during the change of its slope.
  86. GRB030329, BVRcIc field photometry
  87. GRB030329, SPM optical observations
  88. GRB 030329: Optical Decay
  89. Redshift of GRB 030329
  90. GRB030329: ROTSE network observes steepening of decay curve
  91. GRB 030329, optical photometry
  92. GRB 030329: Optical decay and synthesis
  93. GRB030329 optical observations
  94. GRB030329: optical spectroscopy with the TNG
  95. GRB 030329: Radio Observations
  96. GRB 030329, optical spectroscopy
  97. GRB 030329: still bright
  98. GRB 030329: Optical pre-Imaging
  99. GRB 030329: visual observations
  100. GRB 030329: Upper limit from 5.6 hours before trigger

Advanced

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