Home > Research > Publications & Outputs > The XMM Cluster Survey

Electronic data

  • pdf

    Rights statement: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version S Bhargava, P A Giles, A K Romer, T Jeltema, J Mayers, A Bermeo, M Hilton, R Wilkinson, C Vergara, C A Collins, M Manolopoulou, P J Rooney, S Rosborough, K Sabirli, J P Stott, E Swann, P T P Viana, The XMM Cluster Survey: new evidence for the 3.5-keV feature in clusters is inconsistent with a dark matter origin, Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 1, September 2020, Pages 656–671, https://doi.org/10.1093/mnras/staa1829 is available online at: https://academic.oup.com/mnras/article/497/1/656/5863961

    Accepted author manuscript, 1.23 MB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

Links

Text available via DOI:

View graph of relations

The XMM Cluster Survey: new evidence for the 3.5 keV feature in clusters is inconsistent with a dark matter origin

Research output: Contribution to journalJournal articlepeer-review

Published

Standard

The XMM Cluster Survey : new evidence for the 3.5 keV feature in clusters is inconsistent with a dark matter origin. / Bhargava, S.; Giles, P. A.; Romer, A. K.; Jeltema, T.; Mayers, J.; Bermeo, A.; Hilton, M.; Wilkinson, R.; Vergara, C.; Collins, C. A.; Manolopoulou, M.; Rooney, P. J.; Rosborough, S.; Sabirli, K.; Stott, J. P.; Swann, E.; Viana, P. T. P.

In: Monthly Notices of the Royal Astronomical Society, Vol. 497, No. 1, 01.09.2020, p. 656-671.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Bhargava, S, Giles, PA, Romer, AK, Jeltema, T, Mayers, J, Bermeo, A, Hilton, M, Wilkinson, R, Vergara, C, Collins, CA, Manolopoulou, M, Rooney, PJ, Rosborough, S, Sabirli, K, Stott, JP, Swann, E & Viana, PTP 2020, 'The XMM Cluster Survey: new evidence for the 3.5 keV feature in clusters is inconsistent with a dark matter origin', Monthly Notices of the Royal Astronomical Society, vol. 497, no. 1, pp. 656-671. https://doi.org/10.1093/mnras/staa1829

APA

Bhargava, S., Giles, P. A., Romer, A. K., Jeltema, T., Mayers, J., Bermeo, A., Hilton, M., Wilkinson, R., Vergara, C., Collins, C. A., Manolopoulou, M., Rooney, P. J., Rosborough, S., Sabirli, K., Stott, J. P., Swann, E., & Viana, P. T. P. (2020). The XMM Cluster Survey: new evidence for the 3.5 keV feature in clusters is inconsistent with a dark matter origin. Monthly Notices of the Royal Astronomical Society, 497(1), 656-671. https://doi.org/10.1093/mnras/staa1829

Vancouver

Bhargava S, Giles PA, Romer AK, Jeltema T, Mayers J, Bermeo A et al. The XMM Cluster Survey: new evidence for the 3.5 keV feature in clusters is inconsistent with a dark matter origin. Monthly Notices of the Royal Astronomical Society. 2020 Sep 1;497(1):656-671. https://doi.org/10.1093/mnras/staa1829

Author

Bhargava, S. ; Giles, P. A. ; Romer, A. K. ; Jeltema, T. ; Mayers, J. ; Bermeo, A. ; Hilton, M. ; Wilkinson, R. ; Vergara, C. ; Collins, C. A. ; Manolopoulou, M. ; Rooney, P. J. ; Rosborough, S. ; Sabirli, K. ; Stott, J. P. ; Swann, E. ; Viana, P. T. P. / The XMM Cluster Survey : new evidence for the 3.5 keV feature in clusters is inconsistent with a dark matter origin. In: Monthly Notices of the Royal Astronomical Society. 2020 ; Vol. 497, No. 1. pp. 656-671.

Bibtex

@article{adbe6b3c812d476098b20394c95f51ed,
title = "The XMM Cluster Survey: new evidence for the 3.5 keV feature in clusters is inconsistent with a dark matter origin",
abstract = "There have been several reports of a detection of an unexplained excess of X-ray emission at ≃ 3.5 keV in astrophysical systems. One interpretation of this excess is the decay of sterile neutrino dark matter. The most influential study to date analysed 73 clusters observed by the XMM-Newton satellite. We explore evidence for a ≃ 3.5 keV excess in the XMM-PN spectra of 117 redMaPPer galaxy clusters (0.1 < z <0.6). In our analysis of individual spectra, we identify three systems with an excess of flux at ≃ 3.5 keV. In one case (XCS J0003.3+0204) this excess may result from a discrete emission line. None of these systems are the most dark matter dominated in our sample. We group the remaining 114 clusters into four temperature (TX) bins to search for an increase in ≃ 3.5 keV flux excess with TX - a reliable tracer of halo mass. However, we do not find evidence of a significant excess in flux at ≃ 3.5 keV in any TX bins. To maximise sensitivity to a potentially weak dark matter decay feature at ≃ 3.5 keV, we jointly fit 114 clusters. Again, no significant excess is found at ≃ 3.5 keV. We estimate the upper limit of an undetected emission line at ≃ 3.5 keV to be 2.41 × 10-6 photons cm-2 s-1, corresponding to a mixing angle of sin 2(2θ) = 4.4 × 10-11, lower than previous estimates from cluster studies (e.g. sin 2(2θ) ≃ 7 × 10-11, B14). We conclude that a flux excess at ≃ 3.5 keV is not a ubiquitous feature in clusters and therefore unlikely to originate from sterile neutrino dark matter decay.",
keywords = "Dark matter, galaxies: clusters: intracluster medium, X-rays: galaxies: clusters, line: identification",
author = "S. Bhargava and Giles, {P. A.} and Romer, {A. K.} and T. Jeltema and J. Mayers and A. Bermeo and M. Hilton and R. Wilkinson and C. Vergara and Collins, {C. A.} and M. Manolopoulou and Rooney, {P. J.} and S. Rosborough and K. Sabirli and Stott, {J. P.} and E. Swann and Viana, {P. T. P.}",
note = "This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version S Bhargava, P A Giles, A K Romer, T Jeltema, J Mayers, A Bermeo, M Hilton, R Wilkinson, C Vergara, C A Collins, M Manolopoulou, P J Rooney, S Rosborough, K Sabirli, J P Stott, E Swann, P T P Viana, The XMM Cluster Survey: new evidence for the 3.5-keV feature in clusters is inconsistent with a dark matter origin, Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 1, September 2020, Pages 656–671, https://doi.org/10.1093/mnras/staa1829 is available online at: https://academic.oup.com/mnras/article/497/1/656/5863961",
year = "2020",
month = sep,
day = "1",
doi = "10.1093/mnras/staa1829",
language = "English",
volume = "497",
pages = "656--671",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "1",

}

RIS

TY - JOUR

T1 - The XMM Cluster Survey

T2 - new evidence for the 3.5 keV feature in clusters is inconsistent with a dark matter origin

AU - Bhargava, S.

AU - Giles, P. A.

AU - Romer, A. K.

AU - Jeltema, T.

AU - Mayers, J.

AU - Bermeo, A.

AU - Hilton, M.

AU - Wilkinson, R.

AU - Vergara, C.

AU - Collins, C. A.

AU - Manolopoulou, M.

AU - Rooney, P. J.

AU - Rosborough, S.

AU - Sabirli, K.

AU - Stott, J. P.

AU - Swann, E.

AU - Viana, P. T. P.

N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version S Bhargava, P A Giles, A K Romer, T Jeltema, J Mayers, A Bermeo, M Hilton, R Wilkinson, C Vergara, C A Collins, M Manolopoulou, P J Rooney, S Rosborough, K Sabirli, J P Stott, E Swann, P T P Viana, The XMM Cluster Survey: new evidence for the 3.5-keV feature in clusters is inconsistent with a dark matter origin, Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 1, September 2020, Pages 656–671, https://doi.org/10.1093/mnras/staa1829 is available online at: https://academic.oup.com/mnras/article/497/1/656/5863961

PY - 2020/9/1

Y1 - 2020/9/1

N2 - There have been several reports of a detection of an unexplained excess of X-ray emission at ≃ 3.5 keV in astrophysical systems. One interpretation of this excess is the decay of sterile neutrino dark matter. The most influential study to date analysed 73 clusters observed by the XMM-Newton satellite. We explore evidence for a ≃ 3.5 keV excess in the XMM-PN spectra of 117 redMaPPer galaxy clusters (0.1 < z <0.6). In our analysis of individual spectra, we identify three systems with an excess of flux at ≃ 3.5 keV. In one case (XCS J0003.3+0204) this excess may result from a discrete emission line. None of these systems are the most dark matter dominated in our sample. We group the remaining 114 clusters into four temperature (TX) bins to search for an increase in ≃ 3.5 keV flux excess with TX - a reliable tracer of halo mass. However, we do not find evidence of a significant excess in flux at ≃ 3.5 keV in any TX bins. To maximise sensitivity to a potentially weak dark matter decay feature at ≃ 3.5 keV, we jointly fit 114 clusters. Again, no significant excess is found at ≃ 3.5 keV. We estimate the upper limit of an undetected emission line at ≃ 3.5 keV to be 2.41 × 10-6 photons cm-2 s-1, corresponding to a mixing angle of sin 2(2θ) = 4.4 × 10-11, lower than previous estimates from cluster studies (e.g. sin 2(2θ) ≃ 7 × 10-11, B14). We conclude that a flux excess at ≃ 3.5 keV is not a ubiquitous feature in clusters and therefore unlikely to originate from sterile neutrino dark matter decay.

AB - There have been several reports of a detection of an unexplained excess of X-ray emission at ≃ 3.5 keV in astrophysical systems. One interpretation of this excess is the decay of sterile neutrino dark matter. The most influential study to date analysed 73 clusters observed by the XMM-Newton satellite. We explore evidence for a ≃ 3.5 keV excess in the XMM-PN spectra of 117 redMaPPer galaxy clusters (0.1 < z <0.6). In our analysis of individual spectra, we identify three systems with an excess of flux at ≃ 3.5 keV. In one case (XCS J0003.3+0204) this excess may result from a discrete emission line. None of these systems are the most dark matter dominated in our sample. We group the remaining 114 clusters into four temperature (TX) bins to search for an increase in ≃ 3.5 keV flux excess with TX - a reliable tracer of halo mass. However, we do not find evidence of a significant excess in flux at ≃ 3.5 keV in any TX bins. To maximise sensitivity to a potentially weak dark matter decay feature at ≃ 3.5 keV, we jointly fit 114 clusters. Again, no significant excess is found at ≃ 3.5 keV. We estimate the upper limit of an undetected emission line at ≃ 3.5 keV to be 2.41 × 10-6 photons cm-2 s-1, corresponding to a mixing angle of sin 2(2θ) = 4.4 × 10-11, lower than previous estimates from cluster studies (e.g. sin 2(2θ) ≃ 7 × 10-11, B14). We conclude that a flux excess at ≃ 3.5 keV is not a ubiquitous feature in clusters and therefore unlikely to originate from sterile neutrino dark matter decay.

KW - Dark matter

KW - galaxies: clusters: intracluster medium

KW - X-rays: galaxies: clusters

KW - line: identification

U2 - 10.1093/mnras/staa1829

DO - 10.1093/mnras/staa1829

M3 - Journal article

VL - 497

SP - 656

EP - 671

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -