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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"

42279 results found.

  1. GRB030329, SPM optical observations (Correction)
  2. GRB030329, SPM optical observations
  3. GRB 030329, the review of the sky area in plate archive (1950-1998)
  4. GRB 030329: Spectral Evolution of SN 2003dh
  5. Optical Observations of GRB 030418 with Magellan
  6. GRB 030329: optical spectropolarimetry at VLT
  7. GRB 030329: wide-field photograph by R. Tamura 1 hr after the burst
  8. GRB030329: optical polarization
  9. IPN triangulation of GRB030422 (two large error boxes)
  10. GRB 030329 3.5 and 6 cm radio observations at RTF-32 telescope
  11. GRB030329, optical observation
  12. MASTER:optical observations GRB030418
  13. MASTER:optical observations probable GRB030414
  14. GRB030329: 444 AAVSO Measurements
  15. MASTER:optical observations GRB030416
  16. ROTSE-III prompt optical detections of GRB 030418
  17. GRB030418: Upper limits from recent and historical observations.
  18. GRB030418: Kiso near infrared observations
  19. GRB 030418: Optical afterglow
  20. GRB 030418: Finder for afterglow candidate
  21. GRB 030418: Optical afterglow candidate
  22. GRB 030329 OT position
  23. GRB030329: Optical Observations
  24. OT GRB 030329: early UBVRcIc spectral evolution
  25. GRB030329, UBVRI polarimetry, R-polarization
  26. GRB 030329: SARA Optical Observations
  27. OT GRB 030329: early spectrum
  28. GRB030329: VR Photometry at TNG
  29. GRB030324: Candidate Optical Afterglow (Erratum)
  30. GRB030324: Candidate Optical Afterglow
  31. GRB 030413: Optical Observations
  32. GRB 030329 Rc observations
  33. Superluminal motion in GRB 030329 (Correction)
  34. Superluminal motion in GRB 030329
  35. GRB 030329 and SN 2003dh
  36. GRB030329, optical position
  37. GRB 030329 VLBA Observations
  38. IPN triangulation of GRB030406 (small error box)
  39. GRB 030329: BVRI photometry at Asiago
  40. GRB 030329, light curve flattens
  41. GRB 030329: VLT V-band photometry
  42. GRB 030329: Supernova Confirmed
  43. GRB030329: RTT150 optical observations
  44. GRB030329: Near Infrared Observations at Gunma
  45. GRB030329: HET spectroscopic monitoring
  46. Kiso observation of the GRB030329 at April 6
  47. GRB 030329, color evolution
  48. GRB030328, UBVRcIc field photometry
  49. GRB030329: Optical observcations
  50. GRB030329: BV photographic observations
  51. GRB 030329 Optical observations
  52. GRB 030329, color evolution
  53. GRB 030329: possible color change
  54. GRB030329: RTT150 optical observations
  55. GRB 030329: Supernova Spectrum Emerging
  56. GRB030329: Kiso B and R band observations
  57. GRB030329: RTT150 optical observation
  58. GRB030328: R upper limit after 6 hours by MASTER
  59. GRB 030329: BV photographic observations
  60. GRB 030329: SARA Optical Observations
  61. GRB 030329: SARA Optical Observations
  62. GRB 030329, BVRI photometry
  63. GRB030329: Optical observations
  64. SDSS 0.5m PT observations of GRB030329 (correction)
  65. SDSS 0.5m PT observations of GRB030329
  66. GRB 030329, Optical observations
  67. GRB030329, cessation of fading
  68. GRB030329: final R-band light curve by MASTER
  69. GRB030329 - more 15 GHz radio data
  70. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  71. GRB 030329: Sub-millimeter detection
  72. GRB 030329: SARA Optical Observations
  73. GRB 030329: SARA Optical Observations
  74. OT GRB light curves and SN predictions
  75. GRB030329, optical observation
  76. GRB030329, optical observation
  77. GRB030329, new UBVRcIc field photometry
  78. GRB 030329, light curve and SN prediction
  79. GRB030329: optical observations at Tokyo Tech
  80. GRB 030329: optical observations
  81. GRB030329: multiple re-brightening phases
  82. GRB 030329, BRI photometry
  83. GRB030328: Full Observation, X-ray Fading and Spectrum Measured
  84. GRB 030329 , SPM optical observations
  85. GRB030329: Optical observations at Teramo
  86. GRB 030329: Radio observations at GMRT
  87. GRB030329: more 15GHz observations
  88. Further AAVSO V,B,R observations of GRB030329
  89. GRB 030329: Additional Mt. Laguna Optical Observations
  90. GRB 030329: SARA Optical Observations
  91. GRB 030329: Observations with ANDICAM
  92. GRB030329: Optical observations
  93. GRB030329: further optical photometry and evidence for a light curve discontinuity
  94. GRB 030329: fitting parameters and re-brightening
  95. GRB 030329: KAIT optical photometry
  96. GRB030329 Further RBO Optical Observations
  97. GRB 030329: SARA Optical Observations
  98. AAVSO V & R observations of GRB030329
  99. GRB 030329: optical observations
  100. GRB 030329: beginning of the new fading phase in optical band

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