利用 MAGIC 望远镜在三角座 II 中搜寻暗物质
高能天体物理现象
2020-04-07 v1 高能物理 - 唯象学
摘要
我们展示了利用 MAGIC 望远镜对矮椭球卫星候选体三角座 II（Triangulum II）甚高能观测的首批结果，所用为 2016 年 8 月至 2017 年 8 月间获取的 62.4 小时高质量数据。我们在三角座 II 方向上未发现伽马射线超出，并给出了微分与积分伽马射线流强的上限。当前，三角座 II 的运动学受较大不确定性影响，导致其暗物质晕属性测定存在偏差。利用已知矮椭球星系湮灭 J 因子与日心距之间的标度关系，我们估算了三角座 II 对 WIMP 暗物质的湮灭 J 因子为 GeV cm。我们还依据银河系尺寸暗物质晕高分辨模拟的结果推导了该天体的暗物质密度轮廓。我们得到了 WIMP 湮灭至各标准模型通道的热平均湮灭截面的 95% 置信水平上限。最严格的限制来自 末态，其中湮灭截面低至 cm s 被排除。
引用
@article{arxiv.2003.05260,
title = {A search for dark matter in Triangulum II with the MAGIC telescopes},
author = {MAGIC Collaboration and V. A. Acciari and S. Ansoldi and L. A. Antonelli and A. Arbet Engels and D. Baack and A. Babić and B. Banerjee and U. Barres de Almeida and J. A. Barrio and J. Becerra González and W. Bednarek and L. Bellizzi and E. Bernardini and A. Berti and J. Besenrieder and W. Bhattacharyya and C. Bigongiari and A. Biland and O. Blanch and G. Bonnoli and Ž. Bošnjak and G. Busetto and R. Carosi and G. Ceribella and Y. Chai and A. Chilingarian and S. Cikota and S. M. Colak and U. Colin and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and V. D'Elia and P. Da Vela and F. Dazzi and A. De Angelis and B. De Lotto and M. Delfino and J. Delgado and D. Depaoli and F. Di Pierro and L. Di Venere and E. Do Souto Espiñeira and D. Dominis Prester and A. Donini and D. Dorner and M. Doro and D. Elsaesser and V. Fallah Ramazani and A. Fattorini and G. Ferrara and D. Fidalgo and L. Foffano and M. V. Fonseca and L. Font and C. Fruck and S. Fukami and R. J. García López and M. Garczarczyk and S. Gasparyan and M. Gaug and N. Giglietto and F. Giordano and P. Gliwny and N. Godinović and D. Green and J. G. Green and D. Guberman and D. Hadasch and A. Hahn and J. Herrera and J. Hoang and D. Hrupec and M. Hütten and T. Inada and S. Inoue and K. Ishio and Y. Iwamura and L. Jouvin and D. Kerszberg and H. Kubo and J. Kushida and A. Lamastra and D. Lelas and F. Leone and E. Lindfors and S. Lombardi and F. Longo and M. López and R. López-Coto and A. López-Oramas and S. Loporchio and B. Machado de Oliveira Fraga and C. Maggio and P. Majumdar and M. Makariev and M. Mallamaci and G. Maneva and M. Manganaro and K. Mannheim and L. Maraschi and M. Mariotti and M. Martínez and D. Mazin and S. Mićanović and D. Miceli and T. Miener and M. Minev and J. M. Miranda and R. Mirzoyan and E. Molina and A. Moralejo and D. Morcuende and V. Moreno and E. Moretti and P. Munar-Adrover and V. Neustroev and C. Nigro and K. Nilsson and D. Ninci and K. Nishijima and K. Noda and L. Nogués and S. Nozaki and S. Paiano and J. Palacio and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and P. Peñil and M. Peresano and M. Persic and P. G. Prada Moroni and E. Prandini and I. Puljak and W. Rhode and M. Ribó and J. Rico and C. Righi and A. Rugliancich and L. Saha and N. Sahakyan and T. Saito and S. Sakurai and K. Satalecka and F. G. Saturni and K. Schmidt and T. Schweizer and J. Sitarek and I. Šnidarić and D. Sobczynska and A. Somero and A. Stamerra and D. Strom and Y. Suda and T. Surić and M. Takahashi and F. Tavecchio and P. Temnikov and T. Terzić and M. Teshima and N. Torres-Albà and L. Tosti and V. Vagelli and J. van Scherpenberg and G. Vanzo and M. Vazquez Acosta and C. F. Vigorito and V. Vitale and I. Vovk and M. Will and D. Zarić},
journal= {arXiv preprint arXiv:2003.05260},
year = {2020}
}
备注
14 pages, 8 figures, accepted for publication in Physics of the Dark Universe