PSZ2G091：由 NIKA2 相机观测到的红移 z=0.822 处的大质量双团簇
宇宙学与河外天体物理
2022-02-09 v1
摘要
PSZ2 G091.83+26.11 是一个大质量星系团，其 M500 = 7.43 x 10^14 Msun，红移 z = 0.822。该天体呈现出复杂形态，在 X 射线中观测到明显的双峰结构。然而，它在 Planck 样本中作为遵循普适轮廓的单一球形团簇被探测并分析 [1]。该模型可能导致热力学量（如压强轮廓）的误算。由于未来的多波段团簇实验将探测到越来越多更高红移处的天体（我们预期并合天体所占比例更高），量化这一系统效应至关重要。在本工作中，我们使用 NIKA2 相机对 PSZ2 G091.83+26.11 的高分辨率观测，将团簇的形态特征纳入我们的建模中。这通过向 SZ 图像拟合双晕模型，然后重建所得投影压强轮廓来实现。随后我们将这些结果与球形假设进行比较。
引用
@article{arxiv.2111.05082,
title = {PSZ2G091:A massive double cluster at z=0.822 observed by the NIKA2 camera},
author = {E. Artis and R. Adam and P. Ade and H. Ajeddig and P. André and M. Arnaud and H. Aussel and I. Bartalucci and A. Beelen and A. Benoît and S. Berta and L. Bing and O. Bourrion and M. Calvo and A. Catalano and M. De Petris and F. -X. Désert and S. Doyle and E. F. C. Driessen and A. Ferragamo and A. Gomez and J. Goupy and F. Kéruzoré and C. Kramer and B. Ladjelate and G. Lagache and S. Leclercq and J. -F. Lestrade and J. -F. Macías-Pérez and A. Maury and P. Mauskopf and F. Mayet and A. Monfardini and M. Muñoz-Echeverrí and A. Paliwal and L. Perotto and G. Pisano and E. Pointecouteau and N. Ponthieu and G. W. Pratt and V. Revéret and A. J. Rigby and A. Ritacco and C. Romero and H. Roussel and F. Ruppin and K. Schuster and S. Shu and A. Sievers and C. Tucker and G. Yepes},
journal= {arXiv preprint arXiv:2111.05082},
year = {2022}
}
备注
"To appear in the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences."