| ZHU, Z., A. SIMIONESCU, H. AKAMATSU, X. ZHANG, J. S. KAASTRA, J. DE PLAA, O. URBAN, S. W. ALLEN a Norbert WERNER. A shock near the virial radius of the Perseus Cluster. Astronomy and Astrophysics. EDP Sciences, 2021, roč. 652, August, s. "A147", 11 s. ISSN 0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202140673. |
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@article{1791777,
author = {Zhu, Z. and Simionescu, A. and Akamatsu, H. and Zhang, X. and Kaastra, J. S. and de Plaa, J. and Urban, O. and Allen, S. W. and Werner, Norbert},
article_number = {August},
doi = {http://dx.doi.org/10.1051/0004-6361/202140673},
keywords = {Galaxies: clusters: intracluster medium; Galaxies: clusters: individual: Perseus Cluster; X-rays: galaxies: clusters},
language = {eng},
issn = {0004-6361},
journal = {Astronomy and Astrophysics},
title = {A shock near the virial radius of the Perseus Cluster},
url = {https://doi.org/10.1051/0004-6361/202140673},
volume = {652},
year = {2021}
}
TY - JOUR
ID - 1791777
AU - Zhu, Z. - Simionescu, A. - Akamatsu, H. - Zhang, X. - Kaastra, J. S. - de Plaa, J. - Urban, O. - Allen, S. W. - Werner, Norbert
PY - 2021
TI - A shock near the virial radius of the Perseus Cluster
JF - Astronomy and Astrophysics
VL - 652
IS - August
SP - "A147"
EP - "A147"
PB - EDP Sciences
SN - 00046361
KW - Galaxies: clusters: intracluster medium
KW - Galaxies: clusters: individual: Perseus Cluster
KW - X-rays: galaxies: clusters
UR - https://doi.org/10.1051/0004-6361/202140673
N2 - Context. Previous X-ray studies of the Perseus Cluster, consisting of 85 Suzaku pointings along eight azimuthal directions, revealed a particularly steep decrease in the projected temperature profile near the virial radius (similar to r(200)) towards the northwest (NW). Aims. To further explore this shock candidate, another 4 Suzaku observations on the NW edge of the Perseus Cluster have been obtained. These deeper data were designed to provide the best possible control of systematic uncertainties in the spectral analysis. Methods. Using the combined Suzaku observations, we have carefully investigated this interesting region by analyzing the spectra of various annuli and extracting projected thermodynamic profiles. Results. We find that the projected temperature profile shows a break near r(200), indicating a shock with M = 1.9 +/- 0.3. Corresponding discontinuities are also found in the projected emission measure and the density profiles at the same location. This evidence of a shock front so far away from the cluster center is unprecedented, and may provide a first insight into the properties of large-scale virial shocks which shape the process of galaxy cluster growth.
ER -
ZHU, Z., A. SIMIONESCU, H. AKAMATSU, X. ZHANG, J. S. KAASTRA, J. DE PLAA, O. URBAN, S. W. ALLEN a Norbert WERNER. A shock near the virial radius of the Perseus Cluster. \textit{Astronomy and Astrophysics}. EDP Sciences, 2021, roč.~652, August, s.~''A147'', 11 s. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202140673.
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