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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"

21986 results found.

  1. GRB 081003B: TAROT Calern observatory optical observations
  2. GRB 081003A: OSN optical observations
  3. GRB 081001: Further observations from OSN
  4. GRB 081001: Observations from OSN
  5. GRB 081001: Swift UVOT Observations
  6. GRB 080928: Watcher observations
  7. GRB 080928: VLT redshift
  8. GRB080928: Gemini-South Absorption Redshift
  9. GRB 080928: Swift/UVOT observations
  10. GRB 080928: GROND DETECTION
  11. GRB 080928A: ROTSE-III Confirmation of Optical Counterpart
  12. Swift trigger 325707: Swift/UVOT Upper Limits
  13. GRB 080916C: GROND Confirmation of the Optical Afterglow
  14. GRB 080916C: GROND Confirmation of the Optical Afterglow
  15. GRB 080919: REM NIR observations
  16. GRB 080915A: GROND upper limits
  17. GRB 080916A: GROND lightcurve
  18. GRB 080916A: Rapid PROMPT Observations
  19. GRB 080916C: Swift UVOT Refined Analysis
  20. GRB 080916C: GROND Detection of the Optical Afterglow Candidate
  21. GRB080916A: Spectroscopic redshift
  22. GRB 080916C: Swift/XRT detection of possible afterglow
  23. GRB 080916B: Swift UVOT Refined Analysis
  24. GRB080916A: Refined Swift/UVOT Observations
  25. GRB 080915a, SMARTS optical/IR observations
  26. GRB 080916: REM detection of the NIR afterglow
  27. GRB 080916: REM candidate afterglow
  28. GRB 080915: REM NIR early observations
  29. GRB 080915: Swift/UVOT Upper Limits
  30. SGR 0501+4516 : P200 i-band observations
  31. GRB 080915: ROTSE-III Optical Limits
  32. GRB 080913: VLT/FORS spectrum
  33. GRB080913: Swift/UVOT Upper Limits
  34. GRB 080913: VLT/FORS2 observations
  35. GRB 080913: REM NIR early observations
  36. GRB 080913: GROND observation of a high-z optical/NIR afterglow candidate
  37. GRB 080906: Watcher observations
  38. Swift-BAT/-XRT refined analysis on trigger 324362 (LS I +61 303)
  39. SGR J0501+4516: radio pulsar searches with GBT and WSRT
  40. GRB 080905B: Photometric Redshift for the 2MASS Galaxy
  41. GRB 080906: Refined Swift/UVOT Observations
  42. GRB 080905A: optical afterglow
  43. GRB 080906: GROND observations of the optical/NIR afterglow
  44. GRB 080905B: Refined UVOT Analysis
  45. GRB 080905B: VLT redshift
  46. GRB 080905A: NOT and VLT observations
  47. GRB 080905A: Swift-XRT Refined Analysis
  48. GRB080825C: Fermi-LAT observations
  49. GRB 080905: R & I-band optical observations
  50. GRB 080903: Swift/UVOT Observations
  51. GRB 080903: optical observations
  52. GRB 080903: Liverpool Telescope observations
  53. GRB 080903: Astrotel-Caucasus optical observations
  54. GRB 080903: Optical afterglow candidate
  55. GRB 080903: TAROT Calern observatory optical observations
  56. Recent VLA non-detection of SGR 0501+4516
  57. SGR 0501+4516: Spin Down Rate and Inferred Dipole Magnetic Field
  58. SGR 0501+4516: preliminary results of the first XMM-Newton observation
  59. nIR observations of SGR 0501+4516
  60. SGR 0501+4516: Detection of possible optical counterpart
  61. SGR 0501+4516: WHT observations of the possible near-infrared counterpart
  62. GRB 080828: Swift-XRT detection of a possible X-ray afterglow
  63. VLA non-detection of SGR 0501+4516
  64. SGR 0501+4516: XMM-Newton monitoring schedule
  65. GRB 080825B: Swift-XRT team analysis
  66. SGR 0501+4516: Fermi GBM (formerly GLAST Burst Monitor) observations of three exceptionally intense outbursts
  67. GRB080825: Afterglow confirmation and redshift estimate
  68. Suzaku ToO Observation of SGR 0501+4516
  69. GRB 080825B - optical counterpart candidate
  70. SGR 0501+4516: radio pulsar searches with GBT and WSRT
  71. Konus-Wind observations of new SGR 0501+4516
  72. INTEGRAL ToO Observation of SGR0501+4516
  73. Radio Detection of SGR 0501+4516
  74. SGR 0501+4516: MDM Optical Observations
  75. SGR 0501+4516: Astrotel-Caucasus optical observations
  76. SGR 0501+4516: WSRT Radio Observations
  77. SGR 0501+4516: optical observations
  78. GRB 080822 (SGR 0501+4516): archival optical observations
  79. GRB080810 - optical observations
  80. GRB080810: optical observations
  81. GRB 080810: RTT150 optical observations
  82. GRB 080810: Liverpool and Faulkes North observations
  83. GRB 080810: RTT150 optical observations
  84. GRB 080810: Swift/UVOT Refined Analysis
  85. GRB 080810: optical observations
  86. GRB 080810: Liverpool Telescope observations
  87. GRB 080810: Observations from NOT
  88. GRB 080810: RTT150 optical observations
  89. GRB 080810: Keck/HIRES Spectroscopy
  90. GRB 080810 : optical observation with KANATA
  91. GRB 080810: Swift detection of a burst with a bright optical afterglow
  92. GRB 080723B: GROND upper limits
  93. GRB 080723B: XMM-Newton observation
  94. GRB 080805: Faulkes Telescope South optical observations
  95. GRB 080804: GROND observations
  96. GRB 080804: ATCA Radio Observations
  97. GRB 080805: Swift/UVOT Upper Limits
  98. GRB 080804: Swift/UVOT Refined Analysis
  99. GRB080804: Gemini South redshift confirmation
  100. GRB 080804: Faulkes Telescope South observations

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