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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"

23609 results found.

  1. GRB030429: RTT150 optical observations, a possible host galaxy
  2. IPN triangulation of GRB030505B (large error box)
  3. GRB030329: RTT150 optical observations and upper limit for a host
  4. GRB030329: RTT150 optical observations and upper limit for a host
  5. GRB 030329 Optical Observations
  6. IPN triangulation of GRB030425 (single error box)
  7. GRB030329, SPM optical observations
  8. GRB 030329, the review of the sky area in plate archive (1950-1998)
  9. GRB 030329: Spectral Evolution of SN 2003dh
  10. GRB 030329: optical spectropolarimetry at VLT
  11. IPN triangulation of GRB030422B (annulus)
  12. IPN triangulation of GRB030422 (two large error boxes)
  13. GRB 030329 3.5 and 6 cm radio observations at RTF-32 telescope
  14. GRB030329, optical observation
  15. GRB030418: Upper limits from recent and historical observations.
  16. GRB030418: Kiso near infrared observations
  17. GRB 030329 OT position
  18. OT GRB 030329: early UBVRcIc spectral evolution
  19. GRB 030329: SARA Optical Observations
  20. OT GRB 030329: early spectrum
  21. GRB030329: VR Photometry at TNG
  22. GRB030324: Candidate Optical Afterglow (Erratum)
  23. GRB030324: Candidate Optical Afterglow
  24. IPN triangulation of GRB030414 (small error box)
  25. GRB 030413: Optical Observations
  26. IPN triangulation of GRB030413 (small error box)
  27. GRB 030329 and SN 2003dh
  28. IPN triangulation of GRB030406 (small error box)
  29. IPN triangulation of GRB050403 (small error box)
  30. IPN triangulation of GRB030403 (annulus)
  31. GRB 030329: VLT V-band photometry
  32. GRB 030329: Supernova Confirmed
  33. GRB030329: RTT150 optical observations
  34. GRB030329: Near Infrared Observations at Gunma
  35. GRB030329: HET spectroscopic monitoring
  36. Kiso observation of the GRB030329 at April 6
  37. GRB030328, UBVRcIc field photometry
  38. GRB 030329: possible color change
  39. GRB030329: RTT150 optical observations
  40. GRB 030329: Supernova Spectrum Emerging
  41. GRB030329: RTT150 optical observation
  42. GRB030328: R upper limit after 6 hours by MASTER
  43. GRB 030329, Optical observations
  44. GRB 030329, nearby galaxies
  45. GRB030329: final R-band light curve by MASTER
  46. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  47. GRB 030329: SARA Optical Observations
  48. GRB030329, new UBVRcIc field photometry
  49. GRB030329: optical observations at Tokyo Tech
  50. GRB 030329: optical observations
  51. GRB 030329 , SPM optical observations
  52. GRB030329: Optical observations at Teramo
  53. GRB 030329: SARA Optical Observations
  54. GRB 030329: Observations with ANDICAM
  55. GRB030329 Further RBO Optical Observations
  56. triangulation of GRB 030331 (single error box)
  57. GRB030329 - OT rebrightens
  58. GRB 030329: SARA Optical Observations
  59. IPN triangulation of GRB030329b (large error box)
  60. GRB 030329: beginning of the new fading phase in optical band
  61. GRB 030329, optical spectroscopy
  62. GRB 030329: optical photometry
  63. Photometry of GRB030329 - Constant OT Magnitude
  64. GRB 030329, R-band light curve
  65. GRB 030329: further optical observations
  66. GRB030329 - OT brightens
  67. GRB 030329 RBO V Optical Observations
  68. GRB 030329, optical photometry
  69. GRB030329: Near Infrared Observations
  70. GRB 030324: Optical and NIR Observations
  71. GRB 030328, optical photometry
  72. GRB030329: R band light curve by MASTER
  73. GRB 030329: SARA Optical Observations
  74. GRB 030324, optical search
  75. GRB030329b: detection by Konus-Wind and Helicon-CoronasF
  76. GRB 030329: Light curve observed during the change of its slope.
  77. GRB030329, BVRcIc field photometry
  78. GRB030329, SPM optical observations
  79. GRB 030329: Optical Decay
  80. Redshift of GRB 030329
  81. GRB030329 optical observations
  82. GRB030329: optical spectroscopy with the TNG
  83. GRB 030329: Radio Observations
  84. GRB 030329, optical spectroscopy
  85. GRB 030329: still bright
  86. GRB 030329: Optical pre-Imaging
  87. GRB 030329: visual observations
  88. GRB 030323: Gemini South VRI obsevations.
  89. GRB 030329: optical observations
  90. GRB030329: Upper limits from recent and historical observations.
  91. GRB030329 (=H2652): A Long, Extremely Bright GRB Localized by the HETE WXM and SXC
  92. GRB 030329: precise position from Kyoto images
  93. GRB 030328 Optical Observations
  94. GRB030328: Decay index
  95. GRB 030328: optical observations
  96. GRB 030329: Optical afterglow fading
  97. GRB 030329: OT candidate
  98. GRB030328: optical spectroscopy at TNG
  99. GRB030328: optical photometry at the TNG
  100. GRB 030328, optical spectroscopy

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