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GRB prompt emission polarization measurements using integral/IBIS

  • Diego Götz
  • , Philippe Laurent
  • , Francois Lebrun
  • , Frederic Daigne
  • , Željka Bošnjak

Résultats de recherche: Le chapitre dans un livre, un rapport, une anthologie ou une collectionContribution à une conférenceRevue par des pairs

Résumé

We present the polarization measurements of the prompt emission of GRB 041219A obtained with IBIS on board INTEGRAL. For this very long and bright Gamma-Ray Burst we detected a time variable highly polarized signal in the 200-800 keV energy range. Our results favor GRB models where the prompt emission at these energies is produced by synchrotron radiation from a relativistic outflow with a magnetic field, which is coherent on an angular size comparable with the angular size of the emitting region (∼1/Γ).We also present results and the upper limits we obtained for fainter GRBs detected with INTEGRAL.

langue originaleAnglais
titre12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity
EditeurWorld Scientific Publishing Co. Pte Ltd
Pages1604-1606
Nombre de pages3
ISBN (imprimé)9814374512, 9789814374514
Les DOIs
étatPublié - 1 janv. 2012
Modification externeOui
Evénement12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009 - Paris, France
Durée: 12 juil. 200918 juil. 2009

Série de publications

Nom12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity

Une conférence

Une conférence12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009
Pays/TerritoireFrance
La villeParis
période12/07/0918/07/09

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