Warming nuclear pasta with dark matter: kinetic and annihilation heating of neutron star crusts
Warming nuclear pasta with dark matter: kinetic and annihilation heating of neutron star crusts
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用暗物质加热核意大利面：中子星外壳的动力学和湮灭加热
DOI：
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发表时间：
2019
影响因子：
6.4
通讯作者：
N. Raj
中科院分区：
文献类型：
--
作者：
Javier F. Acevedo;J. Bramante;R. K. Leane;N. Raj
中子星是下一代优秀的暗物质热探测器，在其深引力井中，暗物质被加速到相对论速度的散射和湮灭加热。然而，中子星核心的动力学是不确定的，这使得目前很难明确地计算该区域的暗物质散射。另一方面，人们对中子星外层--地壳--的物理理解更为深入。我们表明，仅与低密度地壳的暗物质散射仍然会将中子星动力学地加热到即将到来的望远镜可以探测到的红外温度。我们发现，对于与自旋无关和与自旋相关的核子散射，对于100MeV−1PeV的暗物质质量，仅壳截面灵敏度为10−43−10−41 cm~2，其中最好的灵敏度来自于含有壳层成分(包括面团、意大利面和千层面)的暗物质散射。对于从10 eV到1 MeV的暗物质质量，灵敏度为10−39−10−34 cm~2，这是由壳内中子超流体中的集体声子模激发产生的。此外，对于任何S波或p波湮没暗物质，我们证明了暗物质将仅仅通过与中子星壳层的热化而有效地湮灭，而无论暗物质是否与中子星核散射。这意味着在中子星中，任何具有高达200 MeV的非弹性质量分裂的弱电弱相互作用的暗物质，包括希格西诺，都是有效的湮灭。我们的结论是，中子星的壳层在中子星的暗物质散射和湮灭中起着关键作用。
Neutron stars serve as excellent next-generation thermal detectors of dark matter, heated by the scattering and annihilation of dark matter accelerated to relativistic speeds in their deep gravitational wells. However, the dynamics of neutron star cores are uncertain, making it difficult at present to unequivocally compute dark matter scattering in this region. On the other hand, the physics of an outer layer of the neutron star, the crust, is more robustly understood. We show that dark matter scattering solely with the low-density crust still kinetically heats neutron stars to infrared temperatures detectable by forthcoming telescopes. We find that for both spin-independent and spin-dependent scattering on nucleons, the crust-only cross section sensitivity is 10−43 − 10−41 cm2 for dark matter masses of 100 MeV − 1 PeV, with the best sensitivity arising from dark matter scattering with a crust constituent called nuclear pasta (including gnocchi, spaghetti, and lasagna phases). For dark matter masses from 10 eV to 1 MeV, the sensitivity is 10−39 − 10−34 cm2, arising from exciting collective phonon modes in a neutron superfluid in the inner crust. Furthermore, for any s-wave or p-wave annihilating dark matter, we show that dark matter will efficiently annihilate by thermalizing just with the neutron star crust, regardless of whether the dark matter ever scatters with the neutron star core. This implies efficient annihilation in neutron stars for any electroweakly interacting dark matter with inelastic mass splittings of up to 200 MeV, including Higgsinos. We conclude that neutron star crusts play a key role in dark matter scattering and annihilation in neutron stars.
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中子星中的夸克物质
DOI：
10.1007/978-3-030-34234-0_9
发表时间：
2020
期刊：
Discoveries at the Frontiers of Science: From Nuclear Astrophysics to Relativistic Heavy Ion Collisions
影响因子：
--
作者：
Spinella, W.;Weber, F.;Contrera, G.;Orsaria, M. G.
通讯作者：
Orsaria, M. G.
DOI：
10.1140/epja/i2019-12716-4
发表时间：
2018-10
期刊：
The European Physical Journal A
影响因子：
--
作者：
D. Radice;L. Dai
通讯作者：
D. Radice;L. Dai
影响因子：
5
作者：
P. Graham;R. Janish;V. Narayan;S. Rajendran;P. Riggins
通讯作者：
P. Graham;R. Janish;V. Narayan;S. Rajendran;P. Riggins
影响因子：
5
作者：
A. Albert;R. Alfaro;C. Álvarez;R. Arceo;J. Arteaga-Velázquez;D. Avila Rojas;H. A. Ayala Solares
通讯作者：
A. Albert;R. Alfaro;C. Álvarez;R. Arceo;J. Arteaga-Velázquez;D. Avila Rojas;H. A. Ayala Solares
影响因子：
3.1
作者：
A. Roggero;J. Margueron;L. Roberts;S. Reddy
通讯作者：
A. Roggero;J. Margueron;L. Roberts;S. Reddy