#1657 : Observation Inédite D'une Oscillation Transitoire À 19,5 Hz Dans Le Sursaut Gamma (kilonova) GRB 211211A Ça Se Passe Là-Haut podcast

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#1657 : Observation inédite d'une oscillation transitoire à 19,5 Hz dans le sursaut gamma (kilonova) GRB 211211A

2M ago 20:34

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Une équipe d’astrophysiciens à découvert la présence d’une oscillation de courte durée dans le signal gamma du sursaut GRB 211211A. Elle n’a duré que 0,2 s, 1,6 s après le début du sursaut, puis a disparu. Deux origines possibles en sont déduites pour ce GRB. L’étude est parue dans The Astrophysical Journal.

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Evidence of a Strong 19.5 Hz Flux Oscillation in Swift BAT and Fermi GBM Gamma-Ray Data from GRB 211211A
Cecilia Chirenti et al.
The Astrophysical Journal, Volume 967, Number 1 (15 may 2024)
https://doi.org/10.3847/1538-4357/ad3bb7

… continue reading

1705 episodes

#Astrophysique #Univers #Physique #Cosmologie #Eric Simon #Astronomie #Sciences #Sciences Naturelles

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#1657 : Observation inédite d'une oscillation transitoire à 19,5 Hz dans le sursaut gamma (kilonova) GRB 211211A

Ça Se Passe Là-Haut

108 subscribers

published 2M ago

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MP3•Episode home

Content provided by Eric Simon. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Eric Simon or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://player.fm/legal.

Une équipe d’astrophysiciens à découvert la présence d’une oscillation de courte durée dans le signal gamma du sursaut GRB 211211A. Elle n’a duré que 0,2 s, 1,6 s après le début du sursaut, puis a disparu. Deux origines possibles en sont déduites pour ce GRB. L’étude est parue dans The Astrophysical Journal.

Source

Evidence of a Strong 19.5 Hz Flux Oscillation in Swift BAT and Fermi GBM Gamma-Ray Data from GRB 211211A
Cecilia Chirenti et al.
The Astrophysical Journal, Volume 967, Number 1 (15 may 2024)
https://doi.org/10.3847/1538-4357/ad3bb7

… continue reading

1705 episodes

#Astrophysique #Univers #Physique #Cosmologie #Eric Simon #Astronomie #Sciences #Sciences Naturelles

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