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Estrella Q

Un estel Q o estrella Q (també conegut com a forat gris) és un tipus d'estel degenerat considerat com un derivat dels estels de neutrons més pesats, en el qual la matèria es troba en un estat exòtic. Els estels Q podrien ser extremadament compactes, amb radis inferiors a 1,5 del corresponent radi de Schwarzschild, el que faria que fos difícil de determinar si un objecte és un forat negre estel·lar o un estel Q, llevat que hi hagués una evidència directa de l'absència d'una superfície sòlida.[1]

El terme "estel Q" no indica que es tracta d'un estel de quarks, ja que, la "Q" no es refereix a Quark", sinó més aviat a les partícules retingudes (quantum). Un possible estel Q podria ser l'objecte compacte V404 Cygni.[1]

Referències

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  1. 1,0 1,1 Miller, J.C.; Shahbaz, T.; Nolan, L.A. «Are Q-stars a serious threat for stellar-mass black hole candidates?». University of Oxford, 01-02-2008.(anglès)PDF

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Estrella Q
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