Investigating the outskirts of Abell 133 with Suzaku and
Chandra observations

J 2023

Investigating the outskirts of Abell 133 with Suzaku and Chandra observations

ZHU, Zhenlin; Orsolya Eszter KOVÁCS; Aurora SIMIONESCU a Norbert WERNER

Základní údaje

Originální název

Investigating the outskirts of Abell 133 with Suzaku and Chandra observations

Autoři

ZHU, Zhenlin; Orsolya Eszter KOVÁCS; Aurora SIMIONESCU a Norbert WERNER

Vydání

Astronomy and Astrophysics, EDP Sciences, 2023, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL, arXiv

Impakt faktor

Impact factor: 5.400

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/23:00134401

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Galaxies: clusters: intracluster medium; Galaxies: clusters: individual: Abell 133; X-rays: galaxies: clusters

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 6. 2. 2024 09:31, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Context. Past observations and simulations have predicted an increasingly inhomogeneous gas distribution towards the outskirts of galaxy clusters. However, the exact properties of such gas clumping are not yet well known. The outskirts of Abell 133 can benefit from deep X-ray observations, with a 2.4 Ms ultra-deep Chandra exposure, as well as eight archival Suzaku pointings, making it a unique laboratory for studying the clumping of the intracluster medium (ICM).Aims. We searched for significant clump candidates with the specific aim of identifying ones that could represent genuine ICM inhomogeneity. To further understand how clumping biases the thermodynamic profiles, we compared the measurements including and excluding the clump candidates.Methods. We jointly analyzed Chandra and Suzaku observations of Abell 133. We selected clump candidates with at least 2 sigma significance based on the Chandra image and we discussed their origins further, using information from the DESI Legacy Imaging Surveys cluster catalog as well as the CFHT r-band image. We performed multiple rounds of Suzaku spectral analysis with different corrections for the underlying point sources and clump distribution and we compared the resulting thermodynamic profiles.Results. We detected 16 clump candidates using Chandra, most of which are identified as background clusters or galaxies - as opposed to intrinsic inhomogeneity. Even after the correction of the resolved clumps, the entropy profile approaching the outskirts still flattens, deviating from the power law model expected from self-similar evolution, which implies that unresolved clumping and other complex physics contribute to the entropy flattening in the outskirts.

Návaznosti

GX21-13491X, projekt VaV

Název: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě (Akronym: EHU)

Investor: Grantová agentura ČR, Exploring the Hot Universe and Understanding Comic Feedback

Citovat

ZHU, Zhenlin; Orsolya Eszter KOVÁCS; Aurora SIMIONESCU a Norbert WERNER. Investigating the outskirts of Abell 133 with Suzaku and Chandra observations. Astronomy and Astrophysics. EDP Sciences, 2023, roč. 678, October, s. 1-14. ISSN 0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/202347191.

@article{2370697,
   author = {Zhu, Zhenlin and Kovács, Orsolya Eszter and Simionescu, Aurora and Werner, Norbert},
   article_number = {October},
   doi = {https://doi.org/10.1051/0004-6361/202347191},
   keywords = {Galaxies: clusters: intracluster medium; Galaxies: clusters: individual: Abell 133; X-rays: galaxies: clusters},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {Investigating the outskirts of Abell 133 with Suzaku and Chandra observations},
   url = {https://arxiv.org/abs/2306.10110},
   volume = {678},
   year = {2023}
}

TY  - JOUR
ID  - 2370697
AU  - Zhu, Zhenlin - Kovács, Orsolya Eszter - Simionescu, Aurora - Werner, Norbert
PY  - 2023
TI  - Investigating the outskirts of Abell 133 with Suzaku and Chandra observations
JF  - Astronomy and Astrophysics
VL  - 678
IS  - October
SP  - 1-14
EP  - 1-14
PB  - EDP Sciences
SN  - 00046361
KW  - Galaxies: clusters: intracluster medium
KW  - Galaxies: clusters: individual: Abell 133
KW  - X-rays: galaxies: clusters
UR  - https://arxiv.org/abs/2306.10110
N2  - Context. Past observations and simulations have predicted an increasingly inhomogeneous gas distribution towards the outskirts of galaxy clusters. However, the exact properties of such gas clumping are not yet well known. The outskirts of Abell 133 can benefit from deep X-ray observations, with a 2.4 Ms ultra-deep Chandra exposure, as well as eight archival Suzaku pointings, making it a unique laboratory for studying the clumping of the intracluster medium (ICM).Aims. We searched for significant clump candidates with the specific aim of identifying ones that could represent genuine ICM inhomogeneity. To further understand how clumping biases the thermodynamic profiles, we compared the measurements including and excluding the clump candidates.Methods. We jointly analyzed Chandra and Suzaku observations of Abell 133. We selected clump candidates with at least 2 sigma significance based on the Chandra image and we discussed their origins further, using information from the DESI Legacy Imaging Surveys cluster catalog as well as the CFHT r-band image. We performed multiple rounds of Suzaku spectral analysis with different corrections for the underlying point sources and clump distribution and we compared the resulting thermodynamic profiles.Results. We detected 16 clump candidates using Chandra, most of which are identified as background clusters or galaxies - as opposed to intrinsic inhomogeneity. Even after the correction of the resolved clumps, the entropy profile approaching the outskirts still flattens, deviating from the power law model expected from self-similar evolution, which implies that unresolved clumping and other complex physics contribute to the entropy flattening in the outskirts.
ER  -

ZHU, Zhenlin; Orsolya Eszter KOVÁCS; Aurora SIMIONESCU a Norbert WERNER. Investigating the outskirts of Abell 133 with Suzaku and Chandra observations. \textit{Astronomy and Astrophysics}. EDP Sciences, 2023, roč.~678, October, s.~1-14. ISSN~0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/202347191.

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