论文标题
旨在通过Spectrum-Roentgen-Gamma任务测试无菌中微子暗物质
Towards Testing Sterile Neutrino Dark Matter with Spectrum-Roentgen-Gamma Mission
论文作者
论文摘要
我们调查了SRG任务的前景，以搜索Kev尺度的质量无菌中微子暗物质，从而辐射腐烂成活跃的中微子和光子。 ART-XC和Erosita望远镜获得的数据对SRG太空观测的持续全套X射线调查可以充分探索深色无菌中微子的共振生产机制，这使Lepton不对称地在原始血浆中与大型Plassma中的Lepton不对称相吻合，这与大型肿块一致。特别是，在四年全天空调查的结束时，较早报道的3.5 keV线信号附近的erosita望远镜的敏感性与所有收集的数据可以与XMM-Newton的敏感性相提并论，这将允许一个人在该区域内对可能的无菌型脱发信号进行另一项独立的研究。在低于$ \ 2.4 $ keV的能量范围内，模型参数的预期约束可能比XMM-Newton获得的预期限制明显更强。从ART-XC数据中，在能量范围内，大约在5到20 keV中，可能比到目前为止使用Nustar获得的限制更为严格。我们得出的结论是，SRG任务在测试无菌中微子暗物质假设方面具有很高的潜力。
We investigate the prospects of the SRG mission in searches for the keV-scale mass sterile neutrino dark matter radiatively decaying into active neutrino and photon. The ongoing all-sky X-ray survey of the SRG space observatory with data acquired by the ART-XC and eROSITA telescopes can provide a possibility to fully explore the resonant production mechanism of the dark matter sterile neutrino, which exploits the lepton asymmetry in the primordial plasma consistent with cosmological limits from the Big Bang Nucleosynthesis. In particular, it is shown that at the end of the four year all-sky survey, the sensitivity of the eROSITA telescope near the 3.5 keV line signal reported earlier can be comparable to that of the XMM-Newton with all collected data, which will allow one to carry out another independent study of the possible sterile neutrino decay signal in this area. In the energy range below $\approx2.4$ keV, the expected constraints on the model parameters can be significantly stronger than those obtained with XMM-Newton. From the ART-XC data, in the energy range approximately from 5 to 20 keV, it can be possible to get more stringent constraints than those obtained with NuSTAR so far. We conclude that the SRG mission has a very high potential in testing the sterile neutrino dark matter hypothesis.
