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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. 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"
body:"GRB"
submitter:"Judith Racusin"

49 results found.

  1. LIGO/Virgo G184098: MASTER arhival results
  2. LIGO/Virgo G184098: Correction for GCN Circular 18361
  3. LIGO/Virgo G184098: MAXI/GSC search for an X-ray counterpart of GW150914
  4. LIGO/VIRGO G184098: Summary of VLA results for iPTF15cyk
  5. LIGO/Virgo G184098: MASTER final result
  6. LIGO/Virgo G184098: Refined localizations from CBC parameter estimation
  7. LIGO/Virgo G184098: Updated FAR estimate
  8. LIGO/Virgo G184098: Fermi-LAT search for high-energy gamma-ray counterpart
  9. LIGO/Virgo G184098: LOFAR follow-up
  10. LIGO/Virgo G184098: Results of of 2nd epoch of ASKAP follow-up
  11. LIGO/Virgo G184098: VLA follow-up of iPTF15cyk
  12. LIGO/Virgo G184098: LOFAR follow-up
  13. LIGO/Virgo G184098: VLA follow-up of iPTF15cyk
  14. LIGO/VIRGO G184098 : PESSTO classifications of PanSTARRS transients in the northern region
  15. LIGO/Virgo G184098: Further VST-ESO PARANAL observations
  16. LIGO/VIRGO G184098 : PESSTO classification of PS15cbm in the northern region
  17. LIGO/Virgo G184098: ongoing Pan-STARRS search for optical transients
  18. LIGO/Virgo G184098: MASTER OTs detection and Scenario Machine prediction
  19. LIGO/Virgo G184098: Ongoing gravitational-wave analysis
  20. LIGO/Virgo G184098: spectral classification of PS15cci
  21. LIGO/Virgo G184098: Update to LT Spectroscopy of PS15ccx
  22. LIGO/Virgo G184098: Liverpool Telescope Spectroscopy of PS15ccx
  23. LIGO/Virgo G184098: LOFAR follow-up
  24. LIGO/Virgo G184098: ASKAP followup
  25. LIGO/Virgo G184098: ongoing Pan-STARRS search for optical transients
  26. LIGO/Virgo G184098: optical transient search with Kiso Schmidt telescope and KWFC on behalf of J-GEM collaboration
  27. LIGO/VIRGO G184098 : classifications of transients from the LSQ observations
  28. LIGO/Virgo G184098: INTEGRAL search of temporally coincident prompt hard X-ray emission
  29. LIGO/Virgo G184098: transient search with VISTA
  30. LIGO/Virgo G184098: DESGW followup program
  31. LIGO/Virgo G184098: SkyMapper observations
  32. LIGO/Virgo G184098: TAROT network optical observations
  33. LIGO/Virgo G184098: La Silla - QUEST Followup
  34. LIGO/Virgo G184098: Swift follow-up observations
  35. LIGO/Virgo G184098: MWA Followup
  36. LIGO/Virgo G184098: DESGW followup program
  37. LIGO/Virgo G184098: Pan-STARRS1 observations of the northern sky region
  38. LIGO/Virgo G184098: Keck II DEIMOS Spectra of iPTF Optical Candidates
  39. LIGO/Virgo G184098: Nearby Galaxies in Error Circle
  40. LIGO/Virgo G184098: Fermi-GBM ground-based follow-up
  41. LIGO/Virgo G184098: Observations from the TOROS collaboration
  42. LIGO/Virgo G184098: iPTF Optical Transient Candidates
  43. LIGO/Virgo G184098: VST-ESO PARANAL observations
  44. LIGO/Virgo G184098: Pan-STARRS1 observations of the northern sky region
  45. Instructions for reporting follow-up observations related to LIGO/Virgo G184098
  46. LIGO/Virgo G184098: observations by MASTER
  47. LIGO/Virgo G184098: TAROT La Silla Observatory optical observations (TZAC)
  48. LIGO/Virgo G184098: Swift follow-up observations
  49. LIGO/Virgo G184098: Burst candidate in LIGO engineering run data

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