星系团周围的宇宙激波：基于 DES、SPT 与 ACT 的相干研究
星系天体物理
2023-12-14 v2 宇宙学与河外天体物理
摘要
我们利用来自三项巡天的星系团星表：暗能量巡天（DES）第三年、南极望远镜（SPT）SZ 巡天以及阿塔卡马宇宙学望远镜（ACT）第 4、5、6 次数据发布，并使用来自 SPT 和 ACT 的热 Sunyaev-Zeldovich（SZ）图，在星系团气体压力剖面中搜寻宇宙激波的 signatures。合并后的星系团样本包含约 个团，其质量和红移范围分别为 和 ，图的总天区覆盖约为 。我们在 ACT 和 SPT 星系团周围的 SZ 剖面中于 处发现明显的压力亏损，估计显著性为 ，这在定性上与激波引起的电子与离子间热非平衡一致。该特征在 DES 星系团周围的剖面中未明确确定。我们验证了使用 SPT 或 ACT 图的测量在所有尺度上均一致，包括亏损特征。光学选与 SZ 选星系团的高质量团 SZ 剖面也一致。质量较小的光学选星系团的剖面在小尺度上相较预测被压低 2-5 倍，我们讨论了此行为的可能解释。团的有向堆叠——其方向由 SZ 图像、最亮星系团星系或利用星系星表测得的大尺度结构推断——显示单晕与双晕项的归一化随方向变化。最后，压力亏损特征的位置与现有的溅射半径估计在统计上一致。
引用
@article{arxiv.2310.00059,
title = {Cosmological shocks around galaxy clusters: A coherent investigation with DES, SPT & ACT},
author = {D. Anbajagane and C. Chang and E. J. Baxter and S. Charney and M. Lokken and M. Aguena and S. Allam and O. Alves and A. Amon and R. An and F. Andrade-Oliveira and D. Bacon and N. Battaglia and K. Bechtol and M. R. Becker and B. A. Benson and G. M. Bernstein and L. Bleem and S. Bocquet and J. R. Bond and D. Brooks and A. Carnero Rosell and M. Carrasco Kind and R. Chen and A. Choi and M. Costanzi and T. M. Crawford and M. Crocce and L. N. da Costa and M. E. S. Pereira and T. M. Davis and J. De Vicente and S. Desai and M. J. Devlin and H. T. Diehl and P. Doel and C. Doux and A. Drlica-Wagner and J. Elvin-Poole and I. Ferrero and A. Ferte and B. Flaugher and P. Fosalba and D. Friedel and J. Frieman and J. Garcia-Bellido and M. Gatti and G. Giannini and S. Grandis and D. Gruen and R. A. Gruendl and G. Gutierrez and I. Harrison and J. C. Hill and M. Hilton and S. R. Hinton and D. L. Hollowood and K. Honscheid and B. Jain and D. J. James and M. Jarvis and K. Kuehn and M. Lin and N. MacCrann and J. L. Marshall and J. McCullough and J. J. McMahon and J. Mena-Fernandez and F. Menanteau and R. Miquel and K. Moodley and T. Mroczkowski and J. Myles and S. Naess and A. Navarro-Alsina and R. L. C. Ogando and L. A. Page and A. Palmese and S. Pandey and B. Patridge and A. Pieres and A. A. Plazas Malagon and A. Porredon and J. Prat and C. Reichardt and K. Reil and M. Rodriguez-Monroy and R. P. Rollins and A. K. Romer and E. S. Rykoff and E. Sanchez and C. Sanchez and D. Sanchez Cid and E. Schaan and M. Schubnell and L. F. Secco and I. Sevilla-Noarbe and E. Sheldon and T. Shin and C. Sifon and M. Smith and S. T. Staggs and E. Suchyta and M. E. C. Swanson and G. Tarle and C. To and M. A. Troxel and I. Tutusaus and E. M. Vavagiakis and N. Weaverdyck and J. Weller and P. Wiseman and E. J. Wollack and B. Yanny},
journal= {arXiv preprint arXiv:2310.00059},
year = {2023}
}
备注
[v2]: Version accepted to MNRAS