利用 MAGIC 对 Segue 1 进行深度观测以优化暗物质搜寻
高能物理 - 唯象学
2014-02-07 v3 高能天体物理现象
摘要
我们展示了 MAGIC 望远镜在 2011 年至 2013 年间对卫星星系 Segue 1 进行的立体观测结果。凭借近 160 小时的高质量数据，这是迄今为止在电磁谱甚高能波段对任何矮星系进行的最深观测活动。我们在此大数据样本中搜寻质量范围在 100 GeV 至 20 TeV 之间的暗物质粒子信号。为此，我们使用了全似然分析方法，该方法对特征伽马射线光谱特征（如暗物质湮灭或衰变所预期的特征）提供了最佳灵敏度。特别是，我们将搜索重点放在由不同末态标准模型粒子产生的伽马射线、伴随内部轫致辐射的湮灭、单色谱线以及箱型信号上。我们的结果代表了从卫星星系观测中获得的对湮灭截面或衰变寿命最严格的限制，适用于几百 GeV 以上的质量。特别是，我们最强的限制（95% 置信水平）对应于质量约为 500 GeV 的暗物质粒子湮灭为 tau+tau-，其量级为 <sigma v> ~ 1.2x10^{-24} cm^3 s^{-1}，约为热值 <sigma v> 的 40 倍。
引用
@article{arxiv.1312.1535,
title = {Optimized dark matter searches in deep observations of Segue 1 with MAGIC},
author = {J. Aleksić and S. Ansoldi and L. A. Antonelli and P. Antoranz and A. Babic and P. Bangale and U. Barres de Almeida and J. A. Barrio and J. Becerra González and W. Bednarek and K. Berger and E. Bernardini and A. Biland and O. Blanch and R. K. Bock and S. Bonnefoy and G. Bonnoli and F. Borracci and T. Bretz and E. Carmona and A. Carosi and D. Carreto Fidalgo and P. Colin and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and P. Da Vela and F. Dazzi and A. De Angelis and G. De Caneva and B. De Lotto and C. Delgado Mendez and M. Doert and A. Domínguez and D. Dominis Prester and D. Dorner and M. Doro and S. Einecke and D. Eisenacher and D. Elsaesser and E. Farina and D. Ferenc and M. V. Fonseca and L. Font and K. Frantzen and C. Fruck and R. J. García López and M. Garczarczyk and D. Garrido Terrats and M. Gaug and G. Giavitto and N. Godinović and A. González Muñoz and S. R. Gozzini and D. Hadasch and M. Hayashida and A. Herrero and D. Hildebrand and J. Hose and D. Hrupec and W. Idec and V. Kadenius and H. Kellermann and K. Kodani and Y. Konno and J. Krause and H. Kubo and J. Kushida and A. La Barbera and D. Lelas and N. Lewandowska and E. Lindfors and S. Lombardi and M. López and R. López-Coto and A. López-Oramas and E. Lorenz and I. Lozano and M. Makariev and K. Mallot and G. Maneva and N. Mankuzhiyil and K. Mannheim and L. Maraschi and B. Marcote and M. Mariotti and M. Martínez and D. Mazin and U. Menzel and M. Meucci and J. M. Miranda and R. Mirzoyan and A. Moralejo and P. Munar-Adrover and D. Nakajima and A. Niedzwiecki and K. Nilsson and K. Nishijima and N. Nowak and R. Orito and A. Overkemping and S. Paiano and M. Palatiello and D. Paneque and R. Paoletti and J. M. Paredes and X. Paredes-Fortuny and S. Partini and M. Persic and F. Prada and P. G. Prada Moroni and E. Prandini and S. Preziuso and I. Puljak and R. Reinthal and W. Rhode and M. Ribó and J. Rico and J. Rodriguez Garcia and S. Rügamer and A. Saggion and T. Saito and K. Saito and M. Salvati and K. Satalecka and V. Scalzotto and V. Scapin and C. Schultz and T. Schweizer and A. Sillanpää and J. Sitarek and I. Snidaric and D. Sobczynska and F. Spanier and V. Stamatescu and A. Stamerra and T. Steinbring and J. Storz and S. Sun and T. Surić and L. Takalo and H. Takami and F. Tavecchio and P. Temnikov and T. Terzić and D. Tescaro and M. Teshima and J. Thaele and O. Tibolla and D. F. Torres and T. Toyama and A. Treves and M. Uellenbeck and P. Vogler and R. M. Wagner and F. Zandanel and R. Zanin and A. Ibarra},
journal= {arXiv preprint arXiv:1312.1535},
year = {2014}
}
备注
32 pages, 19 figures