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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"

15361 results found.

  1. SGR1900+14, BeppoSAX-GRBM observations
  2. GRB980703 Very Long Baseline Interferometry
  3. GRB970508 optical observations
  4. GRB980703, Host galaxy multicolor photometry
  5. GRB980703 - BeppoSAX/GRBM detection
  6. GRB980703 optical photometry
  7. GRB980703 optical observations
  8. GRB980703: Radio transient
  9. GRB980703 H-band Observations
  10. GRB980703 Transient Optical Follow-Up
  11. GRB980703: LOTIS observation at early times
  12. GRB 980703: ASM Position & Intensity
  13. SGR1627-41
  14. GRB 980613 Near-IR observations
  15. GRB980613, optical observations
  16. SGR1627-41, RXTE/ASM observations
  17. GRB 980613: Detection of the probable host galaxy
  18. Reduced error box of SGR 1627-41
  19. SGR1627-41, BeppoSAX-GRBM detections
  20. GRB 980613 Optical Observations
  21. GRB 980613 optical observations
  22. Discovery of a new SGR source, SGR1627-41
  23. GRB980613 observations from Palomar
  24. GRB 980613 new optical/IR observations
  25. SGR 1900+14
  26. BATSE on-board GRB trigger change
  27. GRB 980519 Optical Observations
  28. GRB980519 optical observations
  29. GRB980519 I-band observations
  30. GRB970519, optical follow-up at Schmidt Calern
  31. GRB980519 optical observations
  32. GRB980519 Optical Observations
  33. GRB980519 IPN POSITION
  34. GRB980515, BeppoSAX IAUC to be submitted
  35. BATSE on-board GRB trigger change
  36. GRB 980425 Brightness Temperature
  37. BSAX Observations of GRB980425 field
  38. GRB980425 BATSE observations
  39. GRB980425: optical obs.
  40. GRB980326, optical observations
  41. GRB980329, Fading IR counterpart to radio source
  42. GRB980329 Keck K-band observations
  43. GRB980329 optical observations
  44. GRB980329 near-IR observations
  45. GRB980329 infrared observations
  46. GRB980329 optical observations
  47. GRB980329 near IR observations
  48. GRB980326 optical observations
  49. Optical Observations of GRB 970508
  50. GRB 971214: Redshift from Keck Observations
  51. GRB971227: Plaskett R-band observations
  52. GRB 971227: Optical clarifications
  53. GRB971214: Optical Observations and Calibrations
  54. GRB 971214: Apache Point Observatory Optical Observations
  55. GRB 971214: KPNO Optical Observations
  56. Optical Observations of GRB 971214 at Keck
  57. GRB 971214: Optical Observations
  58. Radio Observations of GRB 971214 at the VLA
  59. GRB 971024: KPNO Optical Observations
  60. GRB 970828: Palomar Observations
  61. GRB 970228: Keck/LRIS Optical Observations

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