arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1204.3565astro-ph.SRhep-ph
收藏

作为物理实验室的白矮星:轴子的情况

White dwarfs as physics laboratories: the case of axions

J. Isern, L. Althaus, S. Catalan, A. Corsico, E. Garcia-Berro, M. Salaris, S. Torres

摘要:

白矮星几乎是完全简并的天体,无法从热核源获得能量,因此它们的演化只是一个重力热冷却过程。最近在光度函数的准确度和精确度以及可变白矮星的脉动数据方面的改进表明,它们的冷却速度比传统理论预期的要快。在这篇文章中,我们表明,包括一个额外的冷却项,由于轴子能够与电子相互作用的耦合常数g_ae ~(2-7)× 10 ^{-13}允许更好地拟合的观察。

英文摘要:

White dwarfs are almost completely degenerate objects that cannot obtain energy from thermonuclear sources, so their evolution is just a gravothermal cooling process. Recent improvements in the accuracy and precision of the luminosity function and in pulsational data of variable white dwarfs suggest that they are cooling faster than expected from conventional theory. In this contribution we show that the inclusion of an additional cooling term due to axions able to interact with electrons with a coupling constant g_ae ~(2-7)x10^{-13} allows to fit better the observations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑