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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"

42276 results found.

  1. GRB 030329: Spectral Evolution of SN 2003dh
  2. Optical Observations of GRB 030418 with Magellan
  3. GRB 030329: optical spectropolarimetry at VLT
  4. GRB 030329: wide-field photograph by R. Tamura 1 hr after the burst
  5. GRB030329: optical polarization
  6. IPN triangulation of GRB030422 (two large error boxes)
  7. GRB 030329 3.5 and 6 cm radio observations at RTF-32 telescope
  8. GRB030329, optical observation
  9. MASTER:optical observations GRB030418
  10. MASTER:optical observations probable GRB030414
  11. GRB030329: 444 AAVSO Measurements
  12. MASTER:optical observations GRB030416
  13. ROTSE-III prompt optical detections of GRB 030418
  14. GRB030418: Upper limits from recent and historical observations.
  15. GRB030418: Kiso near infrared observations
  16. GRB 030418: Optical afterglow
  17. GRB 030418: Finder for afterglow candidate
  18. GRB 030418: Optical afterglow candidate
  19. GRB 030329 OT position
  20. GRB030329: Optical Observations
  21. OT GRB 030329: early UBVRcIc spectral evolution
  22. GRB030329, UBVRI polarimetry, R-polarization
  23. GRB 030329: SARA Optical Observations
  24. OT GRB 030329: early spectrum
  25. GRB030329: VR Photometry at TNG
  26. GRB030324: Candidate Optical Afterglow (Erratum)
  27. GRB030324: Candidate Optical Afterglow
  28. GRB 030413: Optical Observations
  29. GRB 030329 Rc observations
  30. Superluminal motion in GRB 030329 (Correction)
  31. Superluminal motion in GRB 030329
  32. GRB 030329 and SN 2003dh
  33. GRB030329, optical position
  34. GRB 030329 VLBA Observations
  35. IPN triangulation of GRB030406 (small error box)
  36. GRB 030329: BVRI photometry at Asiago
  37. GRB 030329, light curve flattens
  38. GRB 030329: VLT V-band photometry
  39. GRB 030329: Supernova Confirmed
  40. GRB030329: RTT150 optical observations
  41. GRB030329: Near Infrared Observations at Gunma
  42. GRB030329: HET spectroscopic monitoring
  43. Kiso observation of the GRB030329 at April 6
  44. GRB 030329, color evolution
  45. GRB030328, UBVRcIc field photometry
  46. GRB030329: Optical observcations
  47. GRB030329: BV photographic observations
  48. GRB 030329 Optical observations
  49. GRB 030329, color evolution
  50. GRB 030329: possible color change
  51. GRB030329: RTT150 optical observations
  52. GRB 030329: Supernova Spectrum Emerging
  53. GRB030329: Kiso B and R band observations
  54. GRB030329: RTT150 optical observation
  55. GRB030328: R upper limit after 6 hours by MASTER
  56. GRB 030329: BV photographic observations
  57. GRB 030329: SARA Optical Observations
  58. GRB 030329: SARA Optical Observations
  59. GRB 030329, BVRI photometry
  60. GRB030329: Optical observations
  61. SDSS 0.5m PT observations of GRB030329 (correction)
  62. SDSS 0.5m PT observations of GRB030329
  63. GRB 030329, Optical observations
  64. GRB030329, cessation of fading
  65. GRB030329: final R-band light curve by MASTER
  66. GRB030329 - more 15 GHz radio data
  67. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  68. GRB 030329: Sub-millimeter detection
  69. GRB 030329: SARA Optical Observations
  70. GRB 030329: SARA Optical Observations
  71. OT GRB light curves and SN predictions
  72. GRB030329, optical observation
  73. GRB030329, optical observation
  74. GRB030329, new UBVRcIc field photometry
  75. GRB 030329, light curve and SN prediction
  76. GRB030329: optical observations at Tokyo Tech
  77. GRB 030329: optical observations
  78. GRB030329: multiple re-brightening phases
  79. GRB 030329, BRI photometry
  80. GRB030328: Full Observation, X-ray Fading and Spectrum Measured
  81. GRB 030329 , SPM optical observations
  82. GRB030329: Optical observations at Teramo
  83. GRB 030329: Radio observations at GMRT
  84. GRB030329: more 15GHz observations
  85. Further AAVSO V,B,R observations of GRB030329
  86. GRB 030329: Additional Mt. Laguna Optical Observations
  87. GRB 030329: SARA Optical Observations
  88. GRB 030329: Observations with ANDICAM
  89. GRB030329: Optical observations
  90. GRB030329: further optical photometry and evidence for a light curve discontinuity
  91. GRB 030329: fitting parameters and re-brightening
  92. GRB 030329: KAIT optical photometry
  93. GRB030329 Further RBO Optical Observations
  94. GRB 030329: SARA Optical Observations
  95. AAVSO V & R observations of GRB030329
  96. GRB 030329: optical observations
  97. GRB 030329: beginning of the new fading phase in optical band
  98. GRB 030329, optical spectroscopy
  99. GRB 030329: fading X-ray afterglow with RXTE
  100. GRB 030329: optical photometry

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