NIKA2相机观测下的大质量并合星系团PSZ2G091
宇宙学与河外天体物理
2022-05-02 v1
摘要
PSZ2 G091.83+26.11是一个质量为M500 = 7.43 x 10^14 Msun、红移z = 0.822的星系团。该天体呈现出复杂的形态，在X射线中观测到明显的双峰结构。然而，在Planck样本中它被作为单一、球对称的星系团并按照普适轮廓进行检测和分析。该模型可能导致热力学量（如压强轮廓）的误算。由于未来的多波段星系团探测实验将探测到越来越多的高红移天体，量化这一系统效应至关重要。在本工作中，我们利用NIKA2相机的高分辨率观测，将星系团的形态学特征纳入我们的建模中。具体做法是对SZ图像拟合双晕模型，然后重建所得的投影压强轮廓。随后我们将这些结果与球对称假设进行比较。
引用
@article{arxiv.2204.14052,
title = {Massive merging cluster PSZ2G091 as seen 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 C. Hanser 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-Echeverría 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:2204.14052},
year = {2022}
}
备注
4 pages, 3 figures Contribution to the 2022 Cosmology session of the 56th Rencontres de Moriond. arXiv admin note: substantial text overlap with arXiv:2111.05082