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CHANG-ES XXXI--CHANG-ES十年：我们从对边缘星系的射电观测中学到了什么

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS

Galaxies Pub Date : 2024-05-06 DOI:10.3390/galaxies12030022

J. Irwin, Rainer Beck, Tanden Cook, R. Dettmar, J. English, V. Heesen, Richard Henriksen, Yan Jiang, Jiang-Tao Li, Li-Yuan Lu, Crystal Mele, A. Müller, Eric J. Murphy, Troy Porter, Richard J. Rand, Nathan Skeggs, Michael Stein, Y. Stein, Jeroen Stil, Andrew Strong, R. Walterbos, Q. D. Wang, T. Wiegert, Yang Yang

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引用次数: 0

摘要

CHANG-ES（Continuum Halos in Nearby Galaxies-an EVLA Survey）是一个雄心勃勃的项目，其目标是35个与视线边缘相交的附近盘状星系。这个方位既可以研究盘区，也可以研究晕区。观测最初在 1.5 GHz（L 波段）和 6.0 GHz（C 波段）进行，采用了多种 VLA 阵列配置和全部四个斯托克斯参数，从而获得了总强度加偏振的空间分辨图像。加入偏振是边缘星系巡天观测所独有的，可以揭示星系的晕磁场。本文将总结迄今为止所取得的成果，其中一些是在CHANG-ES之前从未见过的新现象。例如，我们发现 "X 型 "磁场以及旋转测量反转是螺旋星系的共同特征。此外，还将介绍在 3.0 GHz（S 波段）上的进一步观测情况以及未来的科研机会。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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CHANG-ES XXXI—A Decade of CHANG-ES: What We Have Learned from Radio Observations of Edge-on Galaxies

CHANG-ES (Continuum Halos in Nearby Galaxies—an EVLA Survey) is an ambitious project to target 35 nearby disk galaxies that are edge-on to the line of sight. The orientation permits both the disk and halo regions to be studied. The observations were initially at 1.5 GHz (L-band) and 6.0 GHz (C-band) in a variety of VLA array configurations, and in all four Stokes parameters, which allowed for spatially resolved images in total intensity plus polarization. The inclusion of polarization is unique to an edge-on galaxy survey and reveals the galaxies’ halo magnetic fields. This paper will summarize the results to date, some of which are new phenomena, never seen prior to CHANG-ES. For example, we see that ‘X-type’ fields, as well as rotation measure reversals, are common features of spiral galaxies. Further observations at 3.0 GHz (S-band) as well as future scientific opportunities will also be described.

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来源期刊

Galaxies

Galaxies Physics and Astronomy-Astronomy and Astrophysics

CiteScore

4.90

自引率

12.00%

发文量

100

审稿时长

11 weeks

期刊介绍： Es una revista internacional de acceso abierto revisada por pares que proporciona un foro avanzado para estudios relacionados con astronomía, astrofísica y cosmología. Areas temáticas Astronomía Astrofísica Cosmología Astronomía observacional: radio, infrarrojo, óptico, rayos X, neutrino, etc. Ciencia planetaria Equipos y tecnologías de astronomía. Ingeniería Aeroespacial Análisis de datos astronómicos. Astroquímica y Astrobiología. Arqueoastronomía Historia de la astronomía y cosmología. Problemas filosóficos en cosmología.

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