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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.

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subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

37579 results found.

  1. GRB 030323: SARA Optical Observations
  2. IPN triangulation of GRB030325 (single small error box)
  3. GRB030324, optical observations
  4. IPN triangulation of GRB030325 (two small error boxes)
  5. GRB 030324: TAROT optical observations
  6. GRB 030324 (HETE #2641): Optical observations
  7. GRB030324, Optical Observations
  8. GRB030323: Upper limits from recent and historical observations.
  9. GRB030323 (=H2640): A Faint, Long GRB Localized by the HETE WXM and SXC
  10. GRB030324 (=H2641): A Long GRB Localized in Real Time by the HETE WXM
  11. GRB030324 (=H2641): A Long GRB Localized in Real Time by the HETE WXM
  12. VLT/FORS2 spectra of GRB 030323
  13. GRB030323, ROTSE-III detection of possible optical counterpart
  14. GRB030323, optical observations
  15. GRB030324, BVRcIc field photometry
  16. GRB030323, possible optical counterpart
  17. GRB030323, BVRcIc field calibration
  18. GRB 030324 optical observations
  19. GRB 030320: Optical Observations
  20. GRB 030324, optical observations
  21. IPN triangulation of GRB030320B (annulus)
  22. IPN triangulation of GRB030320 (small error box)
  23. IPN triangulation of GRB030320
  24. Possible GRB 030320 localized by INTEGRAL
  25. IPN upper limit to a GRB associated with SN2003L
  26. IPN triangulation of GRB030317 (annulus)
  27. IPN triangulation of GRB030307 (annulus)
  28. GRB 030227: Optical limit at RIKEN
  29. GRB 030226 Optical observations
  30. IPN triangulation of GRB030306 (single small error box - REVISED)
  31. GRB030226: Optical observations at Asiago
  32. IPN triangulation of GRB030306 (single small error box)
  33. IPN triangulation of GRB030306 (two small error boxes)
  34. IPN triangulation of GRB030306 (intense; annulus only so far)
  35. GRB 030226: Optical observations
  36. IPN triangulation of GRB030304 (annulus)
  37. GRB 030227: Optical observations
  38. GRB030226, BVRc observations
  39. Chandra detection of the X-ray afterglow of GRB 030226
  40. GRB 030226, further optical/NIR imaging
  41. GRB030227, optical observations
  42. GRB 030226: Ic Observations
  43. GRB030227: Kiso optical upper limit
  44. IPN triangulation of GRB030301 (annulus)
  45. IPN triangulation of GRB030228 (annulus)
  46. GRB030227, BVRcIc field photometry
  47. GRB030226, BVRcIc field calibration
  48. GRB 030227 optical afterglow
  49. 030302: NOT A GRB
  50. 030228: NOT A GRB
  51. GRB 030228, optical observations
  52. GRB 030226: Steep Decline
  53. GRB 030227: Confirmed Optical Afterglow (S1-A)
  54. GRB 030226: R band polarimetric observations
  55. GRB 030226: Optical observations
  56. GRB 030227: fading of candidate optical afterglow 'S1-A'
  57. GRB030227:Optical observations
  58. GRB 20030226: Upper limits from recent and historical observations
  59. GRB 030227, possible optical counterpart of XMM-Newton source
  60. GRB030227 - faint tentative OT candidate
  61. GRB 030226, optical observations
  62. GRB030227: Kiso optical observations
  63. GRB 030227: Kyoto optical observation
  64. GRB 030226, optical light curve
  65. GRB 030226 spectroscopy
  66. Possible break in the GRB 030226 light curve
  67. GRB 030226 : Predicted light curve
  68. IPN triangulation of GRB030225 (annulus)
  69. GRB 030226: Confirmed decay index
  70. GRB030226: ESI spectroscopy
  71. GRB030226 (=U10893): A Long GRB Localized by the HETE WXM and SXC
  72. GRB 030226 simultaneous optical observations
  73. Two absorption systems in GRB 030226
  74. GRB 030226, optical observations
  75. GRB 030226 Optical Spectra and R,I,z' Imaging
  76. GRB 030226, optical observations
  77. GRB 030226: Optical afterglow
  78. GRB 030217: Optical Observations at 4, 5, and 6 Days
  79. IPN triangulation of GRB030223 (annulus)
  80. IPN triangulation of GRB030220 (annulus)
  81. GRB: Non-Referencing of GCN Circulars.
  82. IPN triangulation of GRB030218 (annulus)
  83. IPN triangulation of GRB030217 (small error box)
  84. IPN triangulation of GRB030215C (annulus)
  85. IPN triangulation of GRB030217 (annulus)
  86. IPN triangulation of GRB030216 (annulus)
  87. IPN triangulation of GRB030215A and GRB030215B (annuli)
  88. GRB030115, WSRT radio observations - correction to GCN 1864
  89. GRB 030131: marginal optical detection
  90. GRB030115, WSRT radio observations
  91. IPN triangulation of GRB030206 (annulus)
  92. IPN triangulation of GRB030208 (annulus)
  93. GRB 030204: Optical Observations
  94. GRB030204 field photometry
  95. GRB020819: Kiso R and I band observations
  96. GRB 030204: Correction to GCN 1856
  97. GRB 030115: Optical Observations
  98. GRB 030204, optical observations
  99. IPN triangulation of GRB030204 (small error box)
  100. IPN triangulation of GRB030202 (annulus)

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