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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"

45738 results found.

  1. GRB 030329 Rc observations
  2. IPN triangulation of GRB030413 (small error box)
  3. IPN triangulation of GRB030410 (annulus)
  4. Superluminal motion in GRB 030329 (Correction)
  5. Superluminal motion in GRB 030329
  6. GRB 030329 and SN 2003dh
  7. GRB030329, optical position
  8. GRB 030329 VLBA Observations
  9. CORRECTION TO IPN TRIANGULATION OF GRB050403
  10. IPN triangulation of GRB030406 (small error box)
  11. IPN triangulation of GRB050403 (small error box)
  12. IPN triangulation of GRB030403 (annulus)
  13. GRB 030329: BVRI photometry at Asiago
  14. GRB 030329, light curve flattens
  15. GRB 030329: VLT V-band photometry
  16. If the SN/GRB connection confirmed
  17. GRB 030329: Supernova Confirmed
  18. GRB030329: RTT150 optical observations
  19. GRB030329: Near Infrared Observations at Gunma
  20. GRB030329: HET spectroscopic monitoring
  21. Kiso observation of the GRB030329 at April 6
  22. GRB 030329, color evolution
  23. GRB030328, UBVRcIc field photometry
  24. GRB030329: Optical observcations
  25. GRB030329: BV photographic observations
  26. GRB 030329 Optical observations
  27. GRB 030329, color evolution
  28. GRB 030329: possible color change
  29. GRB030329: RTT150 optical observations
  30. GRB 030329: Supernova Spectrum Emerging
  31. GRB030329: Kiso B and R band observations
  32. GRB030329: RTT150 optical observation
  33. GRB030329: More AAVSO VR obs
  34. GRB030328: R upper limit after 6 hours by MASTER
  35. GRB 030329: BV photographic observations
  36. GRB 030329: SARA Optical Observations
  37. GRB 030329: SARA Optical Observations
  38. GRB030329, fading resumes
  39. GRB 030329, BVRI photometry
  40. GRB030329: Optical observations
  41. SDSS 0.5m PT observations of GRB030329 (correction)
  42. SDSS 0.5m PT observations of GRB030329
  43. GRB 030329, Optical observations
  44. GRB 030329, nearby galaxies
  45. GRB030329, cessation of fading
  46. GRB030329: final R-band light curve by MASTER
  47. GRB030329 - more 15 GHz radio data
  48. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  49. GRB 030329: Sub-millimeter detection
  50. GRB 030329: SARA Optical Observations
  51. GRB 030329: SARA Optical Observations
  52. OT GRB light curves and SN predictions
  53. GRB030329, optical observation
  54. GRB030329, optical observation
  55. GRB030329, new UBVRcIc field photometry
  56. GRB 030329, light curve and SN prediction
  57. GRB030329: optical observations at Tokyo Tech
  58. GRB 030329: optical observations
  59. GRB030329: multiple re-brightening phases
  60. GRB 030329, BRI photometry
  61. GRB030328: Full Observation, X-ray Fading and Spectrum Measured
  62. GRB 030329 , SPM optical observations
  63. GRB030329: Optical observations at Teramo
  64. GRB 030329: Radio observations at GMRT
  65. GRB030329: more 15GHz observations
  66. Further AAVSO V,B,R observations of GRB030329
  67. GRB 030329: Additional Mt. Laguna Optical Observations
  68. GRB 030329: SARA Optical Observations
  69. GRB 030329: Observations with ANDICAM
  70. GRB030329: Optical observations
  71. GRB030329: further optical photometry and evidence for a light curve discontinuity
  72. GRB 030329: Correction to GCN 2056
  73. GRB 030329: fitting parameters and re-brightening
  74. GRB 030329: KAIT optical photometry
  75. GRB030329 Further RBO Optical Observations
  76. triangulation of GRB 030331 (single error box)
  77. GRB030329 - OT rebrightens
  78. GRB 030329: SARA Optical Observations
  79. AAVSO V & R observations of GRB030329
  80. IPN triangulation of GRB030331 (annulus)
  81. GRB 030329: optical observations
  82. IPN triangulation of GRB030329b (large error box)
  83. GRB 030329: beginning of the new fading phase in optical band
  84. GRB 030329, optical spectroscopy
  85. GRB 030329: fading X-ray afterglow with RXTE
  86. GRB 030329: optical photometry
  87. GRB030329: Optical observations
  88. Photometry of GRB030329 - Constant OT Magnitude
  89. GRB 030329, R-band observations
  90. GRB 030329, R-band light curve
  91. GRB 030329: further optical observations
  92. GRB030329 - OT brightens
  93. GRB 030329: OT observations at Kanazawa
  94. GRB030329 15 GHz radio observation
  95. GRB 030329 RBO V Optical Observations
  96. GRB 030329, optical photometry
  97. GRB030329: Near Infrared Observations
  98. 030331 NOT A GRB
  99. INTEGRAL GRB 030331
  100. GRB 030324: Optical and NIR Observations

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