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Cover Figure


COVER Production of an astrophysical jet by magnetic forces during gravitational contraction of a rotating, ionized torus (yellow material) as it accretes onto a central compact object. High-speed, spinning bipolar outflow (green) is generated by torsional Alfvén waves that propagate along the large-scale magnetic field (red). These waves simultaneously pinch the magnetic field into slender jets. See page 84 [Image: Y. Uchida, M. Nakamura, S. Hirose]

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Science. ISSN 0036-8075 (print), 1095-9203 (online)