The dark matter interpretation of the 3.5-keV line is inconsistent with blank-sky observations

Dessert, Christopher; Rodd, Nicholas L.; Safdi, Benjamin R.

doi:10.1126/science.aaw3772

Title: The dark matter interpretation of the 3.5-keV line is inconsistent with blank-sky observations

Abstract

Observations of nearby galaxies and galaxy clusters have reported an unexpected x-ray emission line around 3.5 kilo–electron volts (keV). Proposals to explain this line include decaying dark matter—in particular, that the decay of sterile neutrinos with a mass around 7 keV could match the available data. If this interpretation is correct, the 3.5-keV line should also be emitted by dark matter in the halo of the Milky Way. We used more than 30 megaseconds of XMM-Newton (X-ray Multi-Mirror Mission) blank-sky observations to test this hypothesis, finding no evidence of the 3.5-keV line emission from the Milky Way halo. We set an upper limit on the decay rate of dark matter in this mass range, which is inconsistent with the possibility that the 3.5-keV line originates from dark matter decay.

Authors:

^[1];

^[2];

^[1]

Leinweber Center for Theoretical Physics, Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA.
Berkeley Center for Theoretical Physics, University of California, Berkeley, CA 94720, USA., Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

Publication Date:: Thu Mar 26 00:00:00 EDT 2020

Sponsoring Org.:: USDOE

OSTI Identifier:: 1606473

Grant/Contract Number:: SC0019225

Resource Type:: Published Article

Journal Name:: Science

Additional Journal Information:: Journal Name: Science Journal Volume: 367 Journal Issue: 6485; Journal ID: ISSN 0036-8075

Publisher:: American Association for the Advancement of Science (AAAS)

Country of Publication:: United States

Language:: English

Citation Formats


                    Dessert, Christopher, Rodd, Nicholas L., and Safdi, Benjamin R. The dark matter interpretation of the 3.5-keV line is inconsistent with blank-sky observations.  United States: N. p., 2020. 
Web.  doi:10.1126/science.aaw3772.

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                    Dessert, Christopher, Rodd, Nicholas L., & Safdi, Benjamin R. The dark matter interpretation of the 3.5-keV line is inconsistent with blank-sky observations.  United States.  https://doi.org/10.1126/science.aaw3772

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                    Dessert, Christopher, Rodd, Nicholas L., and Safdi, Benjamin R. Thu .  
"The dark matter interpretation of the 3.5-keV line is inconsistent with blank-sky observations".  United States.  https://doi.org/10.1126/science.aaw3772.

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@article{osti_1606473,

  title        = {The dark matter interpretation of the 3.5-keV line is inconsistent with blank-sky observations},

  author       = {Dessert, Christopher and Rodd, Nicholas L. and Safdi, Benjamin R.},

  abstractNote = {Observations of nearby galaxies and galaxy clusters have reported an unexpected x-ray emission line around 3.5 kilo–electron volts (keV). Proposals to explain this line include decaying dark matter—in particular, that the decay of sterile neutrinos with a mass around 7 keV could match the available data. If this interpretation is correct, the 3.5-keV line should also be emitted by dark matter in the halo of the Milky Way. We used more than 30 megaseconds of XMM-Newton (X-ray Multi-Mirror Mission) blank-sky observations to test this hypothesis, finding no evidence of the 3.5-keV line emission from the Milky Way halo. We set an upper limit on the decay rate of dark matter in this mass range, which is inconsistent with the possibility that the 3.5-keV line originates from dark matter decay.},

  doi          = {10.1126/science.aaw3772},

  journal      = {Science},

  number       = 6485,

  volume       = 367,

  place        = {United States},

  year         = {Thu Mar 26 00:00:00 EDT 2020},

  month        = {Thu Mar 26 00:00:00 EDT 2020}

}

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Title: The dark matter interpretation of the 3.5-keV line is inconsistent with blank-sky observations

Abstract

Citation Formats

Sterile neutrinos as dark matter journal, January 1994

A novel determination of the local dark matter density journal, August 2010

New Dark Matter Candidate: Nonthermal Sterile Neutrinos journal, April 1999

Sterile Neutrinos, Dark Matter, and Pulsar Velocities in Models with a Higgs Singlet journal, December 2006

The European Photon Imaging Camera on XMM-Newton: The MOS cameras journal, January 2001

The European Photon Imaging Camera on XMM-Newton: The pn-CCD camera journal, January 2001

A Universal Density Profile from Hierarchical Clustering journal, December 1997

A Suzaku search for dark matter emission lines in the X-ray brightest galaxy clusters journal, June 2015

Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole journal, July 2018

Detection of an Unidentified Emission line in the Stacked X-Ray Spectrum of Galaxy Clusters journal, June 2014

X-ray background measurements with XMM-Newton EPIC journal, June 2002

Unidentified Line in X-Ray Spectra of the Andromeda Galaxy and Perseus Galaxy Cluster journal, December 2014

A New Measurement of the Cosmic X-ray Background conference, January 2009

pnCCDs on XMM-Newton—42 months in orbit journal, October 2003

Sterile neutrino dark matter bounds from galaxies of the Local Group journal, January 2014

Checking the Dark Matter Origin of a 3.53 keV Line with the Milky Way Center journal, October 2015

An X-ray spectroscopic search for dark matter in the Perseus cluster with Suzaku journal, March 2015

Non-detection of X-ray emission from sterile neutrinos in stacked galaxy spectra journal, August 2015

Constraints on 3.55 keV line emission from stacked observations of dwarf spheroidal galaxies journal, November 2014

The Dark Matter halo of the Milky Way, AD 2013 journal, July 2013

Discovery of a 3.5 keV line in the Galactic Centre and a critical look at the origin of the line across astronomical targets journal, April 2015

Minuit - a system for function minimization and analysis of the parameter errors and correlations journal, December 1975

Searching for the 3.5 keV Line in the Deep Fields with Chandra : The 10 Ms Observations journal, February 2018

3.55 keV photon lines from axion to photon conversion in the Milky Way and M31 journal, November 2014

A novel scenario for the possible X-ray line feature at ~3.5 keV: Charge exchange with bare sulfur ions journal, December 2015

Hitomi Constraints on the 3.5 keV Line in the Perseus Galaxy Cluster journal, March 2017

LABORATORY MEASUREMENTS COMPELLINGLY SUPPORT A CHARGE-EXCHANGE MECHANISM FOR THE “DARK MATTER” ∼3.5 keV X-Ray LINE journal, December 2016

Asymptotic formulae for likelihood-based tests of new physics journal, February 2011

The Structure of Dark Matter Halos in Dwarf Galaxies journal, January 1996

Searching for decaying dark matter in deep XMM–Newton observation of the Draco dwarf spheroidal journal, May 2016

The EPIC-MOS particle-induced background spectra journal, December 2007

FIRE-2 simulations: physics versus numerics in galaxy formation journal, June 2018

Radiative decays of massive neutrinos journal, February 1982

Dark Matter Scaling Relations journal, July 2000

Limits and confidence intervals in the presence of nuisance parameters journal, October 2005

Sterile neutrinos in cosmology journal, November 2017

Sterile neutrinos as dark matter
journal, January 1994

A novel determination of the local dark matter density
journal, August 2010

New Dark Matter Candidate: Nonthermal Sterile Neutrinos
journal, April 1999

Sterile Neutrinos, Dark Matter, and Pulsar Velocities in Models with a Higgs Singlet
journal, December 2006

The European Photon Imaging Camera on XMM-Newton: The MOS cameras
journal, January 2001

The European Photon Imaging Camera on XMM-Newton: The pn-CCD camera
journal, January 2001

A Universal Density Profile from Hierarchical Clustering
journal, December 1997

A Suzaku search for dark matter emission lines in the X-ray brightest galaxy clusters
journal, June 2015

Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
journal, July 2018

Detection of an Unidentified Emission line in the Stacked X-Ray Spectrum of Galaxy Clusters
journal, June 2014

X-ray background measurements with XMM-Newton EPIC
journal, June 2002

Unidentified Line in X-Ray Spectra of the Andromeda Galaxy and Perseus Galaxy Cluster
journal, December 2014

A New Measurement of the Cosmic X-ray Background
conference, January 2009

pnCCDs on XMM-Newton—42 months in orbit
journal, October 2003

Sterile neutrino dark matter bounds from galaxies of the Local Group
journal, January 2014

Checking the Dark Matter Origin of a 3.53 keV Line with the Milky Way Center
journal, October 2015

An X-ray spectroscopic search for dark matter in the Perseus cluster with Suzaku
journal, March 2015

Non-detection of X-ray emission from sterile neutrinos in stacked galaxy spectra
journal, August 2015

Constraints on 3.55 keV line emission from stacked observations of dwarf spheroidal galaxies
journal, November 2014

The Dark Matter halo of the Milky Way, AD 2013
journal, July 2013

Discovery of a 3.5 keV line in the Galactic Centre and a critical look at the origin of the line across astronomical targets
journal, April 2015

Minuit - a system for function minimization and analysis of the parameter errors and correlations
journal, December 1975

Searching for the 3.5 keV Line in the Deep Fields with Chandra : The 10 Ms Observations
journal, February 2018

3.55 keV photon lines from axion to photon conversion in the Milky Way and M31
journal, November 2014

A novel scenario for the possible X-ray line feature at ~3.5 keV: Charge exchange with bare sulfur ions
journal, December 2015

Hitomi Constraints on the 3.5 keV Line in the Perseus Galaxy Cluster
journal, March 2017

LABORATORY MEASUREMENTS COMPELLINGLY SUPPORT A CHARGE-EXCHANGE MECHANISM FOR THE “DARK MATTER” ∼3.5 keV X-Ray LINE
journal, December 2016

Asymptotic formulae for likelihood-based tests of new physics
journal, February 2011

The Structure of Dark Matter Halos in Dwarf Galaxies
journal, January 1996

Searching for decaying dark matter in deep XMM–Newton observation of the Draco dwarf spheroidal
journal, May 2016

The EPIC-MOS particle-induced background spectra
journal, December 2007

FIRE-2 simulations: physics versus numerics in galaxy formation
journal, June 2018

Radiative decays of massive neutrinos
journal, February 1982

Dark Matter Scaling Relations
journal, July 2000

Limits and confidence intervals in the presence of nuisance parameters
journal, October 2005

Sterile neutrinos in cosmology
journal, November 2017