SGR 1806-20 Referências Menu de navegaçãoSGR 1806-20folha.uol.com.brM. Mandea and G. Balasis; The SGR 1806-20 magnetar signature on the Earth's magnetic field; Geophysical Journal International; Volume 167 Issue 2 Page 586-591, November 2006 - www.blackwell-synergy.comD. M. Palmer et al; A giant big gamma-ray flare from the magnetar SGR 1806−20; Nature 434, 1107-1109 (28 April 2005) - www.nature.comexpandindo-oe

Magnetares


magnetarestrelas de nêutrons2002molsSGRinglêsquiloparsecanos-luzTerraconstelaçãoSagittariusdiâmetroquilômetrossegundoskm/h2007magnéticocampo magnéticogaussSolgauss





SGR 1806-20 108685main SRB1806 20rev2.jpg


SGR 1806-20 é um magnetar, um tipo particular de estrelas de nêutrons. Descoberto em 2002[1], ele foi identificado como um repetidor de raios gama mols, o SGR, do inglês soft gamma repeater. SGR 1806-20 está localizado a 14,5 quiloparsec (aproximadamente 50.000 anos-luz) da Terra, na constelação de Sagittarius. Tem um diâmetro de não mais de 20 quilômetros, e completa uma rotação sobre seu eixo vertical a cada 7,5 segundos (aproximadamente 30.000 km/h na superfície). No começo de 2007, SGR 1806-20 foi classificado como o objeto mais magnético registrado, seu campo magnético possui uma intensidade de superior aos 1015gauss (comparado com o campo magnético do Sol, que possui entre 1 e 5 gauss de intensidade).[2][3]




O Commons possui uma categoria contendo imagens e outros ficheiros sobre SGR 1806-20



Referências



  1. ↑ folha.uol.com.br Cientistas identificam maior objeto magnético do Universo Acessado em 11/05/2012.


  2. ↑ M. Mandea and G. Balasis; The SGR 1806-20 magnetar signature on the Earth's magnetic field; Geophysical Journal International; Volume 167 Issue 2 Page 586-591, November 2006 - www.blackwell-synergy.com (em inglês)


  3. ↑ D. M. Palmer et al; A giant big gamma-ray flare from the magnetar SGR 1806−20; Nature 434, 1107-1109 (28 April 2005) - www.nature.com (em inglês)




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