潮汐点燃白矮星的超高能宇宙射线
Ultrahigh-energy cosmic rays from tidally-ignited white dwarfs
摘要：
超高能宇宙射线（UHECR）可以被黑洞对恒星的潮汐扰动事件加速。我们提出了一种新的机制UHECR加速，其中白矮星（WD）潮汐压缩的中等质量黑洞（IMBHs），导致其点火和随后的爆炸作为超新星。被超新星加速的宇宙射线在穿过吸积动力喷流时可能会获得能量提升。WD和IMBH之间的相遇率可能相对较高，因为一旦考虑到它们可能存在于矮星系中，IMBH的数量可能会大幅增加。在这里，我们表明，这种潮汐破裂事件自然提供了一个中间组成的观察到的UHECR，并建议矮星系和球状星团的粒子加速到超高能量的合适的网站。
英文摘要：
Ultra-high-energy cosmic rays (UHECRs) can be accelerated by tidal disruption events of stars by black holes. We suggest a novel mechanism for UHECR acceleration wherein white dwarfs (WDs) are tidally compressed by intermediate-mass black holes (IMBHs), leading to their ignition and subsequent explosion as a supernova. Cosmic rays accelerated by the supernova may receive an energy boost when crossing the accretion-powered jet. The rate of encounters between WDs and IMBHs can be relatively high, as the number of IMBHs may be substantially augmented once account is taken of their likely presence in dwarf galaxies. Here we show that this kind of tidal disruption event naturally provides an intermediate composition for the observed UHECRs, and suggest that dwarf galaxies and globular clusters are suitable sites for particle acceleration to ultra-high energies.
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。
