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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"

28101 results found.

  1. GRB070223: Swift/UVOT refined analysis
  2. GRB 070223: Optical-IR observation with KANATA
  3. GRB 070223, Swift-BAT refined analysis
  4. GRB070223: MASTER-VWF-Kislovodsk observations
  5. GRB 070223: Swift-XRT Refined Analysis
  6. GRB070223 - SDSS Pre-Burst Observations
  7. GRB 070223: MDM Observations
  8. GRB070223: Swift burst
  9. GRB 070220: MITSuME Okayama Optical Observation
  10. GRB 070220 Swift-BAT Refined Analysis
  11. Swift/UVOT refined analysis of GRB070220
  12. GRB 070209: Swift XRT refined analysis
  13. GRB 070220: Swift-XRT Refined Analysis
  14. GRB 070220: Observation with the KANATA 1.5m telescope
  15. GRB 070219: Gemini Observations
  16. GRB 070220: Swift detection of a burst
  17. GRB070219: MASTER-VWF-Kislovodsk observations
  18. GRB 070219: Swift/UVOT Upper limits
  19. GRB 070219: I-band observations
  20. GRB 070219, Swift-BAT refined analysis
  21. GRB 070219: optical TNG observations
  22. GRB070219 - SDSS Pre-Burst Observations
  23. GRB 070219: Swift detection of a burst
  24. GRB 070125 observations with the GMRT
  25. GRB 070209: Redshift of a galaxy in the error circle of XRT source
  26. GRB 070129: MDM I-band Detection
  27. GRB 070125: Break in Optical Decay
  28. GRB 070209: Swift XRT analysis
  29. GRB 070201: clarification on localization and Konus-Wind spectra
  30. IPN localization of very bright long hard GRB 070207
  31. GRB 070209, Swift-BAT refined analysis of the short hard burst
  32. GRB 070208: Swift XRT refined analysis
  33. GRB 070208, Swift-BAT refined analysis
  34. GRB070208 - SDSS Pre-Burst Observations
  35. GRB 070208: Early IR detection and afterglow astrometry
  36. GRB 070208: Swift detection of a burst
  37. GRB 070125 detection with CARMA
  38. GRB 070125: Redshift z>~1.54 from Gemini Afterglow Spectrum
  39. GRB 070129: afterglow confirmation
  40. GRB070126: Swift-XRT Observation
  41. GRB 070129: Swift/UVOT Upper limits
  42. GRB 070125: optical observation
  43. GRB 070129, Swift-BAT refined analysis of a particularly long
  44. GRB 070129: Xinglong TNT optical Upper Limit
  45. GRB 070129: Swift-XRT Refined Analysis
  46. GRB 070129: VLT observations
  47. GRB 070125: An IR Point Source and an Apparent Host Galaxy
  48. GRB 070129: Swift detection of a burst
  49. GRB 070126: Swift/UVOT refined analysis
  50. GRB 070125: MITSuME Okayama optical observation
  51. GRB 070125: optical observations
  52. GRB 070126: VLT observations
  53. GRB 070124: Suzaku WAM observation of the prompt emissions
  54. GRB 070125: UVOT Detection in Ultraviolet Filters
  55. GRB 070126, Swift-BAT refined analysis of a very faint burst
  56. GRB070125: Optical observation by Kanata
  57. GRB070124: Swift-XRT Observation
  58. Possible GRB 070126: Swift/UVOT Upper Limit
  59. GRB 070125: UVOT Observations of a Fading Optical Afterglow
  60. GRB 070125: Xinglong TNT optical observations
  61. GRB 070125: Keck/LRIS Spectroscopy -- Evidence for a very low redshift
  62. GRB 070125: Lick 3m Spectroscopy
  63. GRB070125: Swift-XRT Refined Analysis
  64. GRB 070125: SARA detection in R
  65. GRB 070125: P60 Optical Afterglow Candidate
  66. GRB 070126?: Swift detection of a possible burst
  67. GRB070125 redshift request
  68. IPN localization of GRB070124 (short duration, hard spectrum)
  69. GRB 070110: Ep,i - Eiso correlation
  70. GRB 070107: Suzaku WAM observation of the prompt emission
  71. GRB070110: Swift XRT Team refined analysis
  72. GRB 070110, Swift-BAT refined analysis
  73. GRB070107 Swift/UVOT Observations of a Fading Optical Afterglow
  74. GRB 070110: Swift detection of a burst with a possible optical afterglow
  75. GRB 070107: Possible UVOT Afterglow
  76. GRB 070107, Swift-BAT refined analysis
  77. GRB 070107: Swift detection of a burst
  78. VLA observation of GRB 061222B
  79. VLA detection of GRB 061222A
  80. GRB070103: APO SPIcam i' and z' limits
  81. GRB070103: KPNO 4m+FLAMINGOS J limit
  82. GRB 070103: Swift/UVOT Upper limits
  83. GRB070103: Swift XRT refined analysis
  84. GRB 070103, Swift-BAT refined analysis
  85. GRB 070103: NOT observations
  86. GRB 070103: TAROT Calern observatory optical observations
  87. Retractions of previous Swift-BAT triggers
  88. erratum : SDSS Pre-burst Observations of GRB061126
  89. GRB 061210: Swift/XRT Astrometry Correction
  90. GRB 050826: MDM Redshift
  91. GRB 061222A: Confirmation of Gemini Afterglow Candidate
  92. GRB 061222A: Xinglong Optical Limit
  93. GRB 061222A: Gemini Afterglow Candidate
  94. GRB 061222B, Swift-BAT refined analysis
  95. GRB061222A Swift/UVOT: Upper Limits
  96. GRB 061222B: Swift/UVOT Upper limits
  97. GRB 061222B: Observation with the KANATA 1.5m telescope
  98. GRB 061222A: Observation with the KANATA 1.5m telescope
  99. GRB 061222B: BOOTES-IR optical observations
  100. GRB 061222B: SARA upper limit

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