Dark matter line emission constraints from NuSTAR observations of the Bullet Cluster

S. Riemer-Sørensen; D. Wik; G. Madejski; S. Molendi; F. Gastaldello; F. A. Harrison; W. W. Craig; C. J. Hailey; S. E. Boggs; Finn Erland Christensen; D. Stern; W. W.  Zhang; Allan Hornstrup

doi:10.1088/0004-637X/810/1/48

Dark matter line emission constraints from NuSTAR observations of the Bullet Cluster

S. Riemer-Sørensen, D. Wik, G. Madejski, S. Molendi, F. Gastaldello, F. A. Harrison, W. W. Craig, C. J. Hailey, S. E. Boggs, Finn Erland Christensen, D. Stern, W. W. Zhang, Allan Hornstrup

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Abstract

Some dark matter candidates, e.g., sterile neutrinos, provide observable signatures in the form of mono-energetic line emission. We present the first search for dark matter line emission in the range in a pointed observation of the Bullet Cluster with NuSTAR. We do not detect any significant line emission and instead we derive upper limits (95% CL) on the flux, and interpret these constraints in the context of sterile neutrinos and more generic dark matter candidates. NuSTAR does not have the sensitivity to constrain the recently claimed line detection at , but improves on the constraints for energies of 10–25 keV.

Original language	English
Article number	48
Journal	Astrophysical Journal
Volume	810
Number of pages	7
ISSN	0004-637X
DOIs	https://doi.org/10.1088/0004-637X/810/1/48
Publication status	Published - 2015

Keywords

Dark matter
Line: identification
X-rays: galaxies: clusters

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Riemer-Sørensen, S., Wik, D., Madejski, G., Molendi, S., Gastaldello, F., Harrison, F. A., Craig, W. W., Hailey, C. J., Boggs, S. E., Christensen, F. E., Stern, D., Zhang, W. W., & Hornstrup, A. (2015). Dark matter line emission constraints from NuSTAR observations of the Bullet Cluster. Astrophysical Journal, 810, Article 48. https://doi.org/10.1088/0004-637X/810/1/48

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title = "Dark matter line emission constraints from NuSTAR observations of the Bullet Cluster",

abstract = "Some dark matter candidates, e.g., sterile neutrinos, provide observable signatures in the form of mono-energetic line emission. We present the first search for dark matter line emission in the range in a pointed observation of the Bullet Cluster with NuSTAR. We do not detect any significant line emission and instead we derive upper limits (95% CL) on the flux, and interpret these constraints in the context of sterile neutrinos and more generic dark matter candidates. NuSTAR does not have the sensitivity to constrain the recently claimed line detection at , but improves on the constraints for energies of 10–25 keV.",

keywords = "Dark matter, Line: identification, X-rays: galaxies: clusters",

author = "S. Riemer-S{\o}rensen and D. Wik and G. Madejski and S. Molendi and F. Gastaldello and Harrison, {F. A.} and Craig, {W. W.} and Hailey, {C. J.} and Boggs, {S. E.} and Christensen, {Finn Erland} and D. Stern and Zhang, {W. W.} and Allan Hornstrup",

year = "2015",

doi = "10.1088/0004-637X/810/1/48",

language = "English",

volume = "810",

journal = "Astrophysical Journal",

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TY - JOUR

T1 - Dark matter line emission constraints from NuSTAR observations of the Bullet Cluster

AU - Riemer-Sørensen, S.

AU - Wik, D.

AU - Madejski, G.

AU - Molendi, S.

AU - Gastaldello, F.

AU - Harrison, F. A.

AU - Craig, W. W.

AU - Hailey, C. J.

AU - Boggs, S. E.

AU - Christensen, Finn Erland

AU - Stern, D.

AU - Zhang, W. W.

AU - Hornstrup, Allan

PY - 2015

Y1 - 2015

N2 - Some dark matter candidates, e.g., sterile neutrinos, provide observable signatures in the form of mono-energetic line emission. We present the first search for dark matter line emission in the range in a pointed observation of the Bullet Cluster with NuSTAR. We do not detect any significant line emission and instead we derive upper limits (95% CL) on the flux, and interpret these constraints in the context of sterile neutrinos and more generic dark matter candidates. NuSTAR does not have the sensitivity to constrain the recently claimed line detection at , but improves on the constraints for energies of 10–25 keV.

AB - Some dark matter candidates, e.g., sterile neutrinos, provide observable signatures in the form of mono-energetic line emission. We present the first search for dark matter line emission in the range in a pointed observation of the Bullet Cluster with NuSTAR. We do not detect any significant line emission and instead we derive upper limits (95% CL) on the flux, and interpret these constraints in the context of sterile neutrinos and more generic dark matter candidates. NuSTAR does not have the sensitivity to constrain the recently claimed line detection at , but improves on the constraints for energies of 10–25 keV.

KW - Dark matter

KW - Line: identification

KW - X-rays: galaxies: clusters

U2 - 10.1088/0004-637X/810/1/48

DO - 10.1088/0004-637X/810/1/48

M3 - Journal article

SN - 0004-637X

VL - 810

JO - Astrophysical Journal

JF - Astrophysical Journal

M1 - 48

ER -

Dark matter line emission constraints from NuSTAR observations of the Bullet Cluster

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