Discovery of inverse-Compton X-ray emission and estimate of the
volume-averaged magnetic field in a galaxy group

J 2023

Discovery of inverse-Compton X-ray emission and estimate of the volume-averaged magnetic field in a galaxy group

MERNIER, F., Norbert WERNER, J. BAGCHI, M.-L. GENDRON-MARSOLAIS, Gopal-Krishna GOPAL-KRISHNA et. al.

Základní údaje

Originální název

Discovery of inverse-Compton X-ray emission and estimate of the volume-averaged magnetic field in a galaxy group

Autoři

MERNIER, F. (garant), Norbert WERNER (703 Slovensko, domácí), J. BAGCHI, M.-L. GENDRON-MARSOLAIS, Gopal-Krishna GOPAL-KRISHNA, M. GUAINAZZI, A. RICHARD-LAFERRIERE, T. W. SHIMWELL a A. SIMIONESCU

Vydání

Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2023, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL arXiv

Impakt faktor

Impact factor: 4.800 v roce 2022

Kód RIV

RIV/00216224:14310/23:00134377

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1093/mnras/stad2093

UT WoS

001040026300008

Klíčová slova anglicky

magnetic fields; galaxies: clusters: individual: MRC0116+111; galaxies: clusters: intracluster medium; X-rays: galaxies: clusters

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 16. 1. 2024 08:59, Mgr. Marie Šípková, DiS.

Anotace

V originále

Observed in a significant fraction of clusters and groups of galaxies, diffuse radio synchrotron emission reveals the presence of relativistic electrons and magnetic fields permeating large scale systems of galaxies. Although, these non-thermal electrons are expected to upscatter cosmic microwave background photons up to hard X-ray energies, such inverse-Compton (IC) X-ray emission has so far not been unambiguously detected on cluster/group scales. Using deep, new proprietary XMM–Newton observations (∼200 ks of clean exposure), we report a 4.6 σ detection of extended IC X-ray emission in MRC 0116 +111, an extraordinary group of galaxies at z = 0.131. Assuming a spectral slope derived from low frequency radio data, the detection remains robust to systematic uncertainties. Together with low frequency radio data from the Giant Metrewave Radio Telescope (GMRT), this detection provides an estimate for the volume-averaged magnetic field of (1.9 ± 0.3) μG within the central part of the group. This value can serve as an anchor for studies of magnetic fields in the largest gravitationally bound systems in the Universe.

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

MERNIER, F., Norbert WERNER, J. BAGCHI, M.-L. GENDRON-MARSOLAIS, Gopal-Krishna GOPAL-KRISHNA, M. GUAINAZZI, A. RICHARD-LAFERRIERE, T. W. SHIMWELL a A. SIMIONESCU. Discovery of inverse-Compton X-ray emission and estimate of the volume-averaged magnetic field in a galaxy group. Monthly Notices of the Royal Astronomical Society. Oxford University Press, 2023, roč. 524, č. 4, s. 4939-4949. ISSN 0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stad2093.

@article{2361460,
   author = {Mernier, F. and Werner, Norbert and Bagchi, J. and GendronandMarsolais, M.andL. and GopalandKrishna, GopalandKrishna and Guainazzi, M. and RichardandLaferriere, A. and Shimwell, T. W. and Simionescu, A.},
   article_number = {4},
   doi = {http://dx.doi.org/10.1093/mnras/stad2093},
   keywords = {magnetic fields; galaxies: clusters: individual: MRC0116+111; galaxies: clusters: intracluster medium; X-rays: galaxies: clusters},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Discovery of inverse-Compton X-ray emission and estimate of the volume-averaged magnetic field in a galaxy group},
   url = {https://doi.org/10.1093/mnras/stad2093},
   volume = {524},
   year = {2023}
}

TY  - JOUR
ID  - 2361460
AU  - Mernier, F. - Werner, Norbert - Bagchi, J. - Gendron-Marsolais, M.-L. - Gopal-Krishna, Gopal-Krishna - Guainazzi, M. - Richard-Laferriere, A. - Shimwell, T. W. - Simionescu, A.
PY  - 2023
TI  - Discovery of inverse-Compton X-ray emission and estimate of the volume-averaged magnetic field in a galaxy group
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 524
IS  - 4
SP  - 4939-4949
EP  - 4939-4949
PB  - Oxford University Press
SN  - 00358711
KW  - magnetic fields
KW  - galaxies: clusters: individual: MRC0116+111
KW  - galaxies: clusters: intracluster medium
KW  - X-rays: galaxies: clusters
UR  - https://doi.org/10.1093/mnras/stad2093
N2  - Observed in a significant fraction of clusters and groups of galaxies, diffuse radio synchrotron emission reveals the presence of relativistic electrons and magnetic fields permeating large scale systems of galaxies. Although, these non-thermal electrons are expected to upscatter cosmic microwave background photons up to hard X-ray energies, such inverse-Compton (IC) X-ray emission has so far not been unambiguously detected on cluster/group scales. Using deep, new proprietary XMM–Newton observations (∼200 ks of clean exposure), we report a 4.6 σ detection of extended IC X-ray emission in MRC 0116 +111, an extraordinary group of galaxies at z = 0.131. Assuming a spectral slope derived from low frequency radio data, the detection remains robust to systematic uncertainties. Together with low frequency radio data from the Giant Metrewave Radio Telescope (GMRT), this detection provides an estimate for the volume-averaged magnetic field of (1.9 ± 0.3) μG within the central part of the group. This value can serve as an anchor for studies of magnetic fields in the largest gravitationally bound systems in the Universe.
ER  -

MERNIER, F., Norbert WERNER, J. BAGCHI, M.-L. GENDRON-MARSOLAIS, Gopal-Krishna GOPAL-KRISHNA, M. GUAINAZZI, A. RICHARD-LAFERRIERE, T. W. SHIMWELL a A. SIMIONESCU. Discovery of inverse-Compton X-ray emission and estimate of the volume-averaged magnetic field in a galaxy group. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2023, roč.~524, č.~4, s.~4939-4949. ISSN~0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stad2093.

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