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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').
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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"
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submitter:"Judith Racusin"

16319 results found.

  1. GRB 190114B: continued optical observations in Mondy
  2. GRB 190114C: Optical detection from HCT
  3. GRB 190114C: CHILESCOPE optical observations
  4. GRB 190114A:DOAO/LOAO optical observation
  5. GRB 190114C: KMTNet optical observation
  6. GRB190114C: GRowth-India detection of optical afterglow
  7. GRB 190114C: LSGT optical observation
  8. GRB 190114A: DOAO/LOAO optical observation
  9. GRB 190114C: REM optical/NIR detection
  10. GRB 190114C: ALMA detection of a fading mm counterpart
  11. GRB 190114C: Mondy optical observations
  12. GRB 190114C: VLA Detection
  13. GRB 190114C: Swift/UVOT Detection
  14. GRB 190114B: Liverpool Telescope near-IR observations
  15. GRB 190114B: optical afterglow observations in Mondy and Abastumani observatories
  16. GRB 190114B: Swift/UVOT Upper Limits
  17. GRB 190114A: Swift/UVOT Observations
  18. GRB 190114A: Mondy optical afterglow detectio
  19. GRB 190114C: Optical observations
  20. GRB 190114C: A type 1 BdHN with TeV emission
  21. GRB 190114B: NOT optical counterpart
  22. GRB190109B: MITSuME Akeno optical upper limits
  23. GRB 190114C: X-shooter observations of a highly extinguished afterglow
  24. GRB 190114C: refined redshift by the 10.4m GTC
  25. GRB 190114C: Fermi GBM detection
  26. GRB 190114B: MITSuME Akeno optical upper limits
  27. GRB 190114B: GWAC-F60B upper limit
  28. GRB 190114C: OASDG optical observations
  29. GRB 190114A: NOT optical observations
  30. GRB 190114B: Mondy optical afterglow detection
  31. GRB 190114C: NOT optical counterpart and redshift
  32. GRB 190114B: BOOTES-4/MET optical afterglow detection
  33. GRB 190114C: MASTER 4-polarizations filters OT detection
  34. GRB 190114C: MASTER afterglow Detection
  35. GRB 190114C: Swift detection of a very bright burst with a bright optical counterpart
  36. GRB 190114A: OSN Detection
  37. GRB 190103B: Swift/UVOT Upper Limits
  38. GRB 190114A: VLT/X-shooter redshift
  39. Correction to GCN Circular 23663: GRB 190109A: Swift UVOT Upper Limits
  40. GRB 181228A: FRAM-ORM optical limit
  41. GRB 190106A: GMG continued observation
  42. GRB 190106A: OSN Afterglow Observations
  43. GRB 190109B: Swift/UVOT Upper Limits
  44. GRB 190109A: Swift/UVOT Upper Limits
  45. GRB 190106A: optical observations, possible jet break detection
  46. GRB 190106A: Liverpool Telescope observations
  47. Correction to the GCN circ. 23654 / GRB 190109B: Mondy optical upper limit
  48. GRB 190109B: COATLI Optical Observations
  49. GRB 190109B: BOOTES-5/JGT optical observations
  50. GRB 190109B: Mondy optical upper limit
  51. INTEGRAL Weak#8189: AROMA-N Optical Observation
  52. GRB190109A: MITSuME Akeno optical upper limits
  53. GRB 190106A: Mondy optical observations
  54. GRB 190106A : continued TSHAO optical observations
  55. GRB 190106A: NEXT-0.6m and Xinglong-2.16m photometric single powerlaw decay
  56. IERCOO/ICSP optical observation of GRB 190106A
  57. GRB 190106A: GMG photometry in the 2nd night
  58. GRB 190106A: VLT/X-shooter redshift confirmation
  59. GRB 190106A: GMG spectral results
  60. GRB 190106A: OASDG optical observations
  61. GRB 190106A: BOOTES-4/MET optical observations
  62. GRB 190106A: Bassano Bresciano Observatory optical detection
  63. GRB 190106A: Xinglong-2.16m spectroscopy
  64. GRB 190106A: GWAC-F60B optical detection
  65. GRB 190106A : TSHAO optical observations
  66. GRB 190106A: GMG detection
  67. GRB 190106A: MITSuME Akeno optical observation
  68. GRB 190106A: MASTER Amur OT detection
  69. GRB 190106A: Swift detection of a burst with an optical counterpart
  70. SWIFT GRB190106.57 Global MASTER-Net OT detection
  71. IceCube-190104A: MASTER optical observation
  72. GRB 190103B: Bassano Bresciano observatory upper limit
  73. GRB 181201A: photometric signature of the SN
  74. GRB 181231A: BOOTES-2/TELMA optical observations
  75. GRB 181228A: Mondy and AbAO optical upper limits
  76. GRB 181228A: Global MASTER Net OT is the same REM IR transient
  77. GRB 181228A: possible NOT optical detection
  78. GRB 181228A: MITSuME Akeno optical upper limits
  79. GRB 181228A: Xinglong-2.16m optical upper limit
  80. FRB 181228: Global MASTER Net optical inspection
  81. GRB 181222B: Swift follow-up observations of MASTER optical transient J204928.79+245744.0
  82. GRB 181228A: Swift/UVOT Upper Limits
  83. GRB 181228A: TSHAO optical upper limit
  84. GRB 181228A: Global MASTER Net OT detection
  85. GRB 181228A: REM NIR detection
  86. GRB 181225A: KAIT Follow-Up Observations with Upper Limit
  87. GRB 181228A: KAIT Optical Upper Limit
  88. GRB 181225A: Global MASTER Net optical observations
  89. GRB 181222B: Global MASTER Net observations of short bright Fermi GRB
  90. GRB 181222B: Global MASTER Net observations of the short bright Fermi GRB error box.
  91. GRB 181213A: Swift/UVOT Observations
  92. GRB 181213A: Mondy optical observations
  93. GRB 181213A: continued TSHAO optical observations
  94. GRB 181213A: AbAO optical observations
  95. GRB 181213A: HMM-0.5m, NEXT-0.6m, CNEOST-1m optical observations
  96. GRB 181213A: NOT optical observations
  97. GRB 181213A: GWAC-F60A upper limit
  98. GRB 181213A : TSHAO optical observations
  99. GRB181213A: Swift/UVOT Detection
  100. GRB 181213A: BOOTES-5/JGT optical observations

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