SIMBAD references

2025A&A...700A.248Z - Astronomy and Astrophysics, volume 700A248 (2025/8-1)

Imaging-spectroscopy diagnosis of the giant sloshing spiral in the Virgo cluster with the Einstein Probe Follow-up X-ray Telescope.

ZHENG X., JIA S., LI C., CHEN Y., YU H., FENG H., XU D., LIU A., SONG L., LIU C., LU F., ZHANG S., YUAN W., SANDERS J., WANG J., CHEN T., CUI C., CUI W., FENG W., GAO N., GUAN J., HAN D., HOU D., HU H., HUANG M., HUO J., JIN C., LI M., LI W., LIU Y., LUO L., MA J., OU G., PAN H., WANG H., WANG J., WANG J., WANG Y., XU J., XU Y., YANG X., YANG Y., ZHANG H., ZHANG J., ZHANG M., ZHANG Z., ZHAO H., ZHAO X., ZHAO Z., ZHU P. and ZHU Y.

Abstract (from CDS):

We performed deep X-ray observations of the Virgo cluster using the Einstein Probe Follow-up X-ray Telescope (EP-FXT) with a total exposure of 295 ks. Taking advantage of the large field of view (FoV) and low particle background of EP-FXT, the image reveals a giant spiral feature connecting the cold fronts in the northwest and southeast, forming a coherent structure consistent with previous XMM-Newton and Suzaku findings. Furthermore, we present two-dimensional maps of the temperature, metallicity, and entropy in the Virgo cluster that cover a FoV of approximately 28.5'. These maps clearly depict a spiral structure that is characterized by high density, low temperature, high metallicity, and low entropy. These results support the scenario in which the spiral morphology originates from gas sloshing that is induced by a minor merger. In addition, the temperatures measured with EP-FXT are reasonably consistent with those obtained from XMM-Newton within the uncertainties.

Abstract Copyright: © The Authors 2025

Journal keyword(s): Galaxy: structure - galaxies: clusters: intracluster medium - galaxies: structure

Simbad objects: 13

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