论文标题
巨大的白色矮人星星中的核和暗物质加热
Nuclear and dark matter heating in massive white dwarf stars
论文作者
论文摘要
最近，Cheng等。确定了许多大型白色矮人（WD）似乎具有额外的热源，可为多个GYR提供$ \ odot $ $ \ 10^{ - 3} l_ \ odot $。在本文中，我们探讨了电子捕获和pycnoncolear反应的加热。我们还探索了来自暗物质歼灭的加热。 WD星似乎太小，无法捕获足够的暗物质，以至于这很重要。最后，如果暗物质在WD内部凝结至非常高的密度，则可以点燃核反应。我们计算了非常致密的暗物质核心重力潜力中WD的中央密度增强。虽然这可能会启动超新星，但长期以来似乎不太可能提供适度的供暖。我们得出的结论是，电子捕获，pycnonaclear和暗物质反应不太可能在Cheng认为的大量WD中提供明显的加热。
Recently, Cheng et al. identified a number of massive white dwarfs (WD) that appear to have an additional heat source providing a luminosity near $\approx 10^{-3}L_\odot$ for multiple Gyr. In this paper we explore heating from electron capture and pycnonuclear reactions. We also explore heating from dark matter annihilation. WD stars appear to be too small to capture enough dark matter for this to be important. Finally, if dark matter condenses to very high densities inside a WD this could ignite nuclear reactions. We calculate the enhanced central density of a WD in the gravitational potential of a very dense dark matter core. While this might start a supernova, it seems unlikely to provide modest heating for a long time. We conclude that electron capture, pycnonuclear, and dark matter reactions are unlikely to provide significant heating in the massive WD that Cheng considers.
