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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.

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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').
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subject:"Swift"
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submitter:"Judith Racusin"

10954 results found.

  1. GRB 040924(=H3564): A Short, Bright GRB Localized in Real Time by HETE
  2. GRB040912(=H3557): Chandra Candidate X-ray Afterglow
  3. XRF040916: continuing decay of OT
  4. GRB040912(=H3557): Candidate Optical Afterglow
  5. XRF040916: Optical Transient Candidate by Subaru
  6. XRF 040912 (=H3557): Spectral and Temporal Properties
  7. GRB040912(=H3557): Observations with the Chandra X-ray Observatory
  8. GRB040916: Optical observations
  9. GRB040916 (= H3558): Improved Localization from HETE WXM
  10. GRB040916 (= H3558): A Long XRF Localized by HETE
  11. GRB040912 (= H3557): Chandra Observations Scheduled
  12. Optical observations of field of GRB040912
  13. GRB040912 (= H3557): A Long GRB or XRF Localized by HETE
  14. GRB 040903 - INTEGRAL data analysis
  15. Very bright burst detected from SGR 1806-20
  16. Possible GRB 040903 detected with INTEGRAL
  17. GRB 040827: UKIRT - 2nd epoch K-band imaging
  18. GRB 040827: K imaging - no evidence of variability
  19. GRB 040827: RTT150 optical observations
  20. GRB040825B (=H3510): An XRF Localized in Real Time by HETE
  21. GRB 040812: Second epoch CXO Observations
  22. CXO observation of GRB 040812
  23. Bursting activity from SGR 1806-20 detected with IBAS
  24. IPN/HETE localizations of GRB040810 (=H3489)
  25. GRB 040812: a long GRB detected by INTEGRAL
  26. XRF040701: Optical Observations at ESO
  27. IPN/HETE triangulation of GRB040802 (=H3485)
  28. GRB 040730: a long GRB detected with INTEGRAL
  29. GRB040624: optical monitoring at TNG
  30. XRF040701: VLA Observations
  31. XRF040701 (=U11548): a bright XRF detected by HETE
  32. GRB 040624: optical observations
  33. GRB 040624: optical observations at TNG and VLT
  34. IPN Summary of SGR1806-20 Activity in 2004
  35. SGR 1806-20: no IR variability of the proposed counterparts
  36. GRB 040511: NIR observations with REM
  37. IBAS GRB Alerts n.1785 to 1791
  38. GRB 040511: Second Epoch Optical Observations
  39. GRB040511 (=H3218): A Long GRB Localized by HETE WXM and SXC
  40. IPN triangulation of GRB040425 (=H3183)
  41. On Line Availability of Archival HETE Fregate Data and Lightcurves
  42. GRB 040423 (=H3175): A Long GRB Localized by HETE
  43. IBAS GRB alerts 1739, 1740, 1741
  44. HETE/IPN localization of GRB040403A (=H3143, a long burst) and GRB040403B(=H3144, a short/hard burst)
  45. GRB 040403: Optical Observations
  46. GRB 040403: optical observations
  47. Summary of recent bursts from SGR 1806-20 detected by INTEGRAL
  48. IBAS GRB Alert 1694
  49. GRB 040319 (=H3128): An X-Ray-Rich GRB Localized by the HETE-2 WXM and SXC
  50. GRB 040323: a long GRB detected with INTEGRAL
  51. IBAS GRB alerts 1679, 1680, 1681
  52. IBAS Alert 1678: not a GRB
  53. MASTER: RXTE GRB040308 optical observation
  54. IBAS results on a burst from SGR1806-20
  55. INTEGRAL detection of activity from SGR1806-20
  56. RXTE GRB040229 optical observation: no candidate
  57. IPN triangulation of GRB040228 (H3066, H3067)
  58. GRB 040228 (=H3066?,=H3067?): A Long GRB Localized by the HETE-2 WXM
  59. GRB 040223: Deep NIR NTT observations
  60. GRB 040223: REM IJK Observations
  61. GRB 040223: a long GRB detected with INTEGRAL
  62. Follow-up on IBAS GRB Alert 1379
  63. GRB040106: optical observations with REM+ROSS
  64. GRB 040106: Optical observations
  65. GRB031220(=H2976): TNG R-band Observation of the Chandra X-ray Sources
  66. GRB 031220: Subaru observation
  67. GRB 031220: Optical observation at Tokyo Tech
  68. GRB031203, improved XMM position
  69. GRB 031203: Optical/IR Astrometry
  70. IPN/HETE localization of GRB031203B (=H2949; large error box)
  71. XMM-Newton Observation of GRB031203
  72. GRB031203: K' Photometry of the likely GRB host
  73. XMM-Newton Observation of GRB031203
  74. GRB 031203: IR NTTobservations do not confirm REM detection
  75. GRB 031203: IR REM Observations
  76. GRB 031203: A long GRB detected with INTEGRAL
  77. IPN triangulation of GRB031130 (large error box)
  78. IPN triangulation of GRB031120 (two large error boxes)
  79. GRB 031111B (= H2925) : Kyoto Optical Observation
  80. IPN/HETE localization of GRB031109 (=H2917; large error box)
  81. GRB 031111: Optical observations
  82. SN 2003jd (SN/GRB?) -- X-ray Observations
  83. HETE Prompt GRB Spectral Analyses
  84. IPN triangulation of GRB031111 (=H2924): small error box
  85. XRF031109 (=H2919): A very long XRF localized by HETE
  86. GRB030929/SN2003jd association unlikely based on IPN localiztion
  87. IPN triangulation of GRB031027 (small error box)
  88. Lulin optical follow-up observations of GRB031026
  89. GRB 031026 (=H2882): Evidence for High Redshift from Prompt
  90. GRB031026 (=H2882): A Long, Hard Spectrum Burst Localized by HETE
  91. XRF 030723: Subaru Optical Observations
  92. IPN triangulation of GRB031004A (short/hard; annulus)
  93. XRF 030824: observations at CFHT
  94. IPN triangulation of GRB030926 (short/hard; large error box)
  95. XRF030824 (=H2821): An X-Ray Flash Localized by the HETE WXM
  96. XRF030823 (=H2818): An X-Ray Flash Localized by the HETE WXM and SXC
  97. GRB030913: Subaru Optical Observations
  98. GRB030913: OT's limit by MASTER
  99. GRB030913 (=H2849): Confirmation of the Flight Localization
  100. Magellan Observations of GRB030725 (=H2779)

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