On the interpretation of dark matter self-interactions in Abell 3827

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

On the interpretation of dark matter self-interactions in Abell 3827. / Kahlhoefer, Felix; Schmidt-Hoberg, Kai; Kummer, Janis; Sarkar, Subir.

In: Monthly Notices of the Royal Astronomical Society, Vol. 452, No. 1, 2015, p. L54-L58.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Kahlhoefer, F, Schmidt-Hoberg, K, Kummer, J & Sarkar, S 2015, 'On the interpretation of dark matter self-interactions in Abell 3827', Monthly Notices of the Royal Astronomical Society, vol. 452, no. 1, pp. L54-L58. https://doi.org/10.1093/mnrasl/slv088

APA

Kahlhoefer, F., Schmidt-Hoberg, K., Kummer, J., & Sarkar, S. (2015). On the interpretation of dark matter self-interactions in Abell 3827. Monthly Notices of the Royal Astronomical Society, 452(1), L54-L58. https://doi.org/10.1093/mnrasl/slv088

Vancouver

Kahlhoefer F, Schmidt-Hoberg K, Kummer J, Sarkar S. On the interpretation of dark matter self-interactions in Abell 3827. Monthly Notices of the Royal Astronomical Society. 2015;452(1):L54-L58. https://doi.org/10.1093/mnrasl/slv088

Author

Kahlhoefer, Felix ; Schmidt-Hoberg, Kai ; Kummer, Janis ; Sarkar, Subir. / On the interpretation of dark matter self-interactions in Abell 3827. In: Monthly Notices of the Royal Astronomical Society. 2015 ; Vol. 452, No. 1. pp. L54-L58.

Bibtex

@article{16b538f594d34987a7c17425a42a9637,
title = "On the interpretation of dark matter self-interactions in Abell 3827",
abstract = "Self-interactions of dark matter (DM) particles can potentially lead to an observable separation between the DM halo and the stars of a galaxy moving through a region of large DM density. Such a separation has recently been observed in a galaxy falling into the core of the galaxy cluster Abell 3827.We estimated the DM self-interaction cross-section needed to reproduce the observed effects and find that the sensitivity of Abell 3827 has been significantly overestimated in a previous study.Our corrected estimate is σ˜/m_DM ∼ 3 cm^2 g^−1 when self-interactions result in an effective drag force and σ/m_DM ∼ 1.5 cm^2 g^−1 for the case of contact interactions, insome tension with previous upper bounds.",
keywords = "Faculty of Science, astroparticle physics, dark matter",
author = "Felix Kahlhoefer and Kai Schmidt-Hoberg and Janis Kummer and Subir Sarkar",
year = "2015",
doi = "10.1093/mnrasl/slv088",
language = "English",
volume = "452",
pages = "L54--L58",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",

}

RIS

TY - JOUR

T1 - On the interpretation of dark matter self-interactions in Abell 3827

AU - Kahlhoefer, Felix

AU - Schmidt-Hoberg, Kai

AU - Kummer, Janis

AU - Sarkar, Subir

PY - 2015

Y1 - 2015

N2 - Self-interactions of dark matter (DM) particles can potentially lead to an observable separation between the DM halo and the stars of a galaxy moving through a region of large DM density. Such a separation has recently been observed in a galaxy falling into the core of the galaxy cluster Abell 3827.We estimated the DM self-interaction cross-section needed to reproduce the observed effects and find that the sensitivity of Abell 3827 has been significantly overestimated in a previous study.Our corrected estimate is σ˜/m_DM ∼ 3 cm^2 g^−1 when self-interactions result in an effective drag force and σ/m_DM ∼ 1.5 cm^2 g^−1 for the case of contact interactions, insome tension with previous upper bounds.

AB - Self-interactions of dark matter (DM) particles can potentially lead to an observable separation between the DM halo and the stars of a galaxy moving through a region of large DM density. Such a separation has recently been observed in a galaxy falling into the core of the galaxy cluster Abell 3827.We estimated the DM self-interaction cross-section needed to reproduce the observed effects and find that the sensitivity of Abell 3827 has been significantly overestimated in a previous study.Our corrected estimate is σ˜/m_DM ∼ 3 cm^2 g^−1 when self-interactions result in an effective drag force and σ/m_DM ∼ 1.5 cm^2 g^−1 for the case of contact interactions, insome tension with previous upper bounds.

KW - Faculty of Science

KW - astroparticle physics

KW - dark matter

U2 - 10.1093/mnrasl/slv088

DO - 10.1093/mnrasl/slv088

M3 - Journal article

VL - 452

SP - L54-L58

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 1

ER -

ID: 142231174