Measuring the ICM velocity structure in the Ophiuchus cluster Article Swipe

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Efraín Gatuzz , J. S. Sanders , K. Dennerl , Ang Liu , A. C. Fabian , C. Pinto , D. Eckert , H. R. Russell , T. Tamura , S. A. Walker , J. ZuHone ·

YOU? · · 2023 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2303.17556

We have found evidence of bulk velocities following active galactic nucleus (AGN) bubbles in the Virgo cluster and galaxy motions in the Centaurus cluster. In order to increase the sample and improve our understanding of the intracluster medium (ICM), we present the results of a detailed mapping of the Ophiuchus cluster with {\it XMM-Newton} to measure bulk flows through very accurate Fe~K measurements. To measure the gas velocities we use a novel EPIC-pn energy scale calibration, which uses the Cu K$α$ instrumental line as reference for the line emission. We created 2D spectral maps for the velocity, metallicity, temperature, density, entropy and pressure with a spatial resolution of 0.25$'$ ($\sim 26$~kpc). The ICM velocities in the central regions where AGN feedback is most important are similar to the velocity of the brightest cluster galaxy (BCG). We have found a large interface region where the velocity changes abruptly from blueshifted to redshifted gas which follows a sharp surface brightness discontinuity. We also found that the metallicities and temperatures do not change as we move outwards from the giant radio fossil previously identified in radio observations of the cluster. Finally, we have found a contribution from the kinetic component of $<25\%$to the total energy budget for large distances.

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Physics Intracluster medium Astrophysics Active galactic nucleus Surface brightness Galaxy cluster Ophiuchus Redshift Virgo Cluster Velocity dispersion Galaxy Cluster (spacecraft) Virial theorem Astronomy Star formation Computer science Programming language

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2303.17556
PDF: https://arxiv.org/pdf/2303.17556
OA Status: green
Cited By: 1
Related Works: 10
OpenAlex ID: https://openalex.org/W4361866070

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DOI: https://doi.org/10.48550/arxiv.2303.17556

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Title: Measuring the ICM velocity structure in the Ophiuchus cluster

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Language: en

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Publication year: 2023

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Publication date: 2023-03-27

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Authors: Efraín Gatuzz, J. S. Sanders, K. Dennerl, Ang Liu, A. C. Fabian, C. Pinto, D. Eckert, H. R. Russell, T. Tamura, S. A. Walker, J. ZuHone

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Landing page: https://arxiv.org/abs/2303.17556

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Concepts: Physics, Intracluster medium, Astrophysics, Active galactic nucleus, Surface brightness, Galaxy cluster, Ophiuchus, Redshift, Virgo Cluster, Velocity dispersion, Galaxy, Cluster (spacecraft), Virial theorem, Astronomy, Star formation, Computer science, Programming language

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Cited by: 1

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abstract_inverted_index.created	90
abstract_inverted_index.entropy	100
abstract_inverted_index.follows	153
abstract_inverted_index.improve	31
abstract_inverted_index.kinetic	195
abstract_inverted_index.mapping	46
abstract_inverted_index.measure	55, 64
abstract_inverted_index.motions	19
abstract_inverted_index.nucleus	10
abstract_inverted_index.present	40
abstract_inverted_index.regions	117
abstract_inverted_index.results	42
abstract_inverted_index.similar	125
abstract_inverted_index.spatial	105
abstract_inverted_index.surface	156
abstract_inverted_index.through	58
abstract_inverted_index.Finally,	187
abstract_inverted_index.abruptly	146
abstract_inverted_index.accurate	60
abstract_inverted_index.cluster.	23, 186
abstract_inverted_index.density,	99
abstract_inverted_index.detailed	45
abstract_inverted_index.evidence	3
abstract_inverted_index.feedback	120
abstract_inverted_index.galactic	9
abstract_inverted_index.increase	27
abstract_inverted_index.outwards	173
abstract_inverted_index.pressure	102
abstract_inverted_index.spectral	92
abstract_inverted_index.velocity	128, 144
abstract_inverted_index.26$~kpc).	110
abstract_inverted_index.Centaurus	22
abstract_inverted_index.Ophiuchus	49
abstract_inverted_index.brightest	131
abstract_inverted_index.component	196
abstract_inverted_index.emission.	88
abstract_inverted_index.following	7
abstract_inverted_index.important	123
abstract_inverted_index.interface	140
abstract_inverted_index.reference	84
abstract_inverted_index.velocity,	96
abstract_inverted_index.brightness	157
abstract_inverted_index.distances.	205
abstract_inverted_index.identified	180
abstract_inverted_index.previously	179
abstract_inverted_index.redshifted	150
abstract_inverted_index.resolution	106
abstract_inverted_index.velocities	6, 67, 113
abstract_inverted_index.XMM-Newton}	53
abstract_inverted_index.blueshifted	148
abstract_inverted_index.$<25\%$to	198
abstract_inverted_index.calibration,	75
abstract_inverted_index.contribution	192
abstract_inverted_index.instrumental	81
abstract_inverted_index.intracluster	36
abstract_inverted_index.metallicity,	97
abstract_inverted_index.observations	183
abstract_inverted_index.temperature,	98
abstract_inverted_index.temperatures	166
abstract_inverted_index.measurements.	62
abstract_inverted_index.metallicities	164
abstract_inverted_index.understanding	33
abstract_inverted_index.discontinuity.	158
cited_by_percentile_year.max	94
cited_by_percentile_year.min	89
countries_distinct_count	0
institutions_distinct_count	11
sustainable_development_goals[0].id	https://metadata.un.org/sdg/7
sustainable_development_goals[0].score	0.7400000095367432
sustainable_development_goals[0].display_name	Affordable and clean energy
citation_normalized_percentile.value	0.74038088
citation_normalized_percentile.is_in_top_1_percent	False
citation_normalized_percentile.is_in_top_10_percent	False