Unidentified line in x-ray spectra of the Andromeda galaxy and Perseus galaxy cluster.
- A. Boyarsky, O. Ruchayskiy, D. Iakubovskyi, J. Franse
- PhysicsPhysical Review Letters
- 17 February 2014
We report a weak line at 3.52±0.02 keV in x-ray spectra of the Andromeda galaxy and the Perseus galaxy cluster observed by the metal-oxide-silicon (MOS) and p-n (PN) CCD cameras of the XMM-Newton…
A facility to search for hidden particles at the CERN SPS: the SHiP physics case
- S. Alekhin, W. Altmannshofer, K. Zurek
- PhysicsReports on progress in physics. Physical Society
- 19 April 2015
It is demonstrated that the SHiP experiment has a unique potential to discover new physics and can directly probe a number of solutions of beyond the standard model puzzles, such as neutrino masses, baryon asymmetry of the Universe, dark matter, and inflation.
A facility to Search for Hidden Particles (SHiP) at the CERN SPS
- SHiP Collaboration M. Anelli, S. Aoki, A. Zoccoli
- Physics
- 20 April 2015
A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden…
Lyman-alpha constraints on warm and on warm-plus-cold dark matter models
- A. Boyarsky, J. Lesgourgues, O. Ruchayskiy, M. Viel
- Physics
- 1 December 2008
We revisit Lyman-alpha bounds on the dark matter mass in Lambda Warm Dark Matter (Lambda-WDM) models, and derive new bounds in the case of mixed Cold plus Warm models (Lambda-CWDM), using a set up…
The Role of Sterile Neutrinos in Cosmology and Astrophysics
- A. Boyarsky, O. Ruchayskiy, M. Shaposhnikov
- Physics
- 30 December 2008
We present a comprehensive overview of an extension of the Standard Model that contains three right-handed (sterile) neutrinos with masses below the electroweak scale [the Neutrino Minimal Standard…
Self-consistent evolution of magnetic fields and chiral asymmetry in the early universe.
- A. Boyarsky, J. Fröhlich, O. Ruchayskiy
- PhysicsPhysical Review Letters
- 15 September 2011
It is shown that the evolution of magnetic fields in a primordial plasma, filled with standard model particles at temperatures T≳10 MeV, is strongly affected by the chiral anomaly, which may strongly affect many processes in the early Universe.
The haloes of bright satellite galaxies in a warm dark matter universe
- M. Lovell, V. Eke, O. Ruchayskiy
- Physics
- 14 April 2011
High-resolution N-body simulations of galactic cold dark matter haloes indicate that we should expect to find a few satellite galaxies around the Milky Way whose haloes have a maximum circular…
A lower bound on the mass of dark matter particles
- A. Boyarsky, O. Ruchayskiy, D. Iakubovskyi
- Physics
- 28 August 2008
We discuss the bounds on the mass of Dark Matter (DM) particles, coming from the analysis of DM phase-space distribution in dwarf spheroidal galaxies (dSphs). After reviewing the existing approaches,…
Checking the Dark Matter Origin of a 3.53 keV Line with the Milky Way Center.
- A. Boyarsky, J. Franse, D. Iakubovskyi, O. Ruchayskiy
- PhysicsPhysical Review Letters
- 11 August 2014
A line at 3.539±0.011 keV in the deep exposure data set of the Galactic center region, observed with the x-ray multi-mirror mission Newton, is detected, consistent with constraints for a class of Milky Way mass models, presented previously by observers.
A White Paper on keV sterile neutrino Dark Matter
- R. Adhikari, M. Agostini, K. Zuber
- Physics
- 15 February 2016
We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved—cosmology, astrophysics, nuclear, and particle physics—in each…
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