Observatório Dietrich Schiel
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Observatório Dietrich SchielCentro de Divulgação da Astronomia Centro de Divulgação Científica e Cultural - CDCCUniversidade de São Paulo - USP
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Os Fascinantes Pulsares
Por: Andrea de Souza Navarro Carvalho
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Descoberta dos Pulsares
1967 Jocelyn Bell
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Radiotelescópio
quatro hectares
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"Pequenos Homenzinhos Verdes“
"Little Green Man 1" (LGM-1)
regularidades em marcações
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PSR 1919+21
1,3373 vezes por segundo
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Pulsares
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Estrela de Neutrons
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Densidade
– Uma colher de chá = 100 milhões de toneladas
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Pulsares
Rotação rápida
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Rotação do Pulsar
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Crédito da imagem:http://astro.if.ufrgs.br
Rotação do Pulsar
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Pulso
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Nebulosa do Caranguejo
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Pulsar do Caranguejo
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Brilho
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Velocidade
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Velocidade
Video
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47 Tucane
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Dupla de Pulsares
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Anomalias na regularidade dos pulsos de um pulsar
PSR B1257+12
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PSR B1257+12
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Pulsar PSR J1719-1438
4000 anos-luz
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Exoplaneta Exótico
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Sons dos Pulsares
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PSR_0329+54
1,4 vezes por segundo
Alfa= 03h32min59sDelta=+54°34´44”Camelopardalis – GirafaEscala= 12,9 min-arc
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PSR_0833-45
11 vezes por segundo
Alfa= 08h33min20sDelta=-45°10´35”VelaEscala 12 min-arc
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PSR_B0531+21
30 vezes por segundo
Nebulosa de CarangueloAlfa= 05h34min32sDelta= +22°00´52”Taurus – TouroEscala= 12 min-arc
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PSR J0437-4715Milissegundo
174 vezes por segundo
Alfa= 04h37mim 15sDelta = -47°15´08sCaelum – CinzelEscala= 12 min-arc
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PSR B1937+21.4
642 vezes por segundo
Alfa= 19h39min38sDelta=+21°54´39”Vulpecula – RaposaEscala= 12.9 min-arc
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FIM
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Obrigada !