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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"

32688 results found.

  1. GRB 030329, the review of the sky area in plate archive (1950-1998)
  2. GRB 030329: Spectral Evolution of SN 2003dh
  3. GRB 030329: optical spectropolarimetry at VLT
  4. GRB030329: optical polarization
  5. GRB030329, optical observation
  6. GRB030329: 444 AAVSO Measurements
  7. ROTSE-III prompt optical detections of GRB 030418
  8. GRB030418: Upper limits from recent and historical observations.
  9. GRB 030418: Optical afterglow
  10. GRB 030418: Finder for afterglow candidate
  11. GRB 030329 OT position
  12. GRB030329: Optical Observations
  13. OT GRB 030329: early UBVRcIc spectral evolution
  14. GRB030329, UBVRI polarimetry, R-polarization
  15. GRB 030329: SARA Optical Observations
  16. OT GRB 030329: early spectrum
  17. GRB030329: VR Photometry at TNG
  18. GRB030324: Candidate Optical Afterglow
  19. GRB 030413: Optical Observations
  20. GRB 030329 Rc observations
  21. Superluminal motion in GRB 030329 (Correction)
  22. Superluminal motion in GRB 030329
  23. GRB 030329 and SN 2003dh
  24. GRB030329, optical position
  25. GRB 030329 VLBA Observations
  26. GRB 030329: BVRI photometry at Asiago
  27. GRB 030329, light curve flattens
  28. GRB 030329: VLT V-band photometry
  29. If the SN/GRB connection confirmed
  30. GRB 030329: Supernova Confirmed
  31. GRB030329: RTT150 optical observations
  32. GRB030329: Near Infrared Observations at Gunma
  33. GRB030329: HET spectroscopic monitoring
  34. GRB 030329, color evolution
  35. GRB030328, UBVRcIc field photometry
  36. GRB030329: Optical observcations
  37. GRB030329: BV photographic observations
  38. GRB 030329 Optical observations
  39. GRB 030329, color evolution
  40. GRB 030329: possible color change
  41. GRB030329: RTT150 optical observations
  42. GRB 030329: Supernova Spectrum Emerging
  43. GRB030329: RTT150 optical observation
  44. GRB030329: More AAVSO VR obs
  45. GRB030328: R upper limit after 6 hours by MASTER
  46. GRB 030329: BV photographic observations
  47. GRB 030329: SARA Optical Observations
  48. GRB 030329: SARA Optical Observations
  49. GRB030329, fading resumes
  50. GRB 030329, BVRI photometry
  51. GRB030329: Optical observations
  52. SDSS 0.5m PT observations of GRB030329 (correction)
  53. SDSS 0.5m PT observations of GRB030329
  54. GRB 030329, Optical observations
  55. GRB 030329, nearby galaxies
  56. GRB030329, cessation of fading
  57. GRB030329: final R-band light curve by MASTER
  58. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  59. GRB 030329: Sub-millimeter detection
  60. GRB 030329: SARA Optical Observations
  61. GRB 030329: SARA Optical Observations
  62. OT GRB light curves and SN predictions
  63. GRB030329, optical observation
  64. GRB030329, optical observation
  65. GRB030329, new UBVRcIc field photometry
  66. GRB 030329, light curve and SN prediction
  67. GRB030329: optical observations at Tokyo Tech
  68. GRB 030329: optical observations
  69. GRB030329: multiple re-brightening phases
  70. GRB 030329, BRI photometry
  71. GRB030329: Optical observations at Teramo
  72. GRB030329: more 15GHz observations
  73. Further AAVSO V,B,R observations of GRB030329
  74. GRB 030329: Additional Mt. Laguna Optical Observations
  75. GRB 030329: SARA Optical Observations
  76. GRB 030329: Observations with ANDICAM
  77. GRB030329: Optical observations
  78. GRB 030329: Correction to GCN 2056
  79. GRB 030329: fitting parameters and re-brightening
  80. GRB 030329: KAIT optical photometry
  81. GRB030329 Further RBO Optical Observations
  82. triangulation of GRB 030331 (single error box)
  83. GRB030329 - OT rebrightens
  84. GRB 030329: SARA Optical Observations
  85. AAVSO V & R observations of GRB030329
  86. GRB 030329: optical observations
  87. IPN triangulation of GRB030329b (large error box)
  88. GRB 030329: beginning of the new fading phase in optical band
  89. GRB 030329, optical spectroscopy
  90. GRB 030329: fading X-ray afterglow with RXTE
  91. GRB 030329: optical photometry
  92. GRB030329: Optical observations
  93. Photometry of GRB030329 - Constant OT Magnitude
  94. GRB 030329, R-band light curve
  95. GRB 030329: further optical observations
  96. GRB030329 - OT brightens
  97. GRB 030329: OT observations at Kanazawa
  98. GRB030329 15 GHz radio observation
  99. GRB 030329 RBO V Optical Observations
  100. GRB 030329, optical photometry

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