تقرير
Galactic Center constraints on self-interacting sterile neutrinos from fermionic dark matter ('ino') models
| العنوان: | Galactic Center constraints on self-interacting sterile neutrinos from fermionic dark matter ('ino') models |
|---|---|
| المؤلفون: | Yunis, R., Argüelles, C. R., Mavromatos, N. E., Moliné, Á., Krut, A., Carinci, M., Rueda, J. A., Ruffini, R. |
| المصدر: | Physics of the Dark Universe 30 (2020) 100699 |
| سنة النشر: | 2020 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies |
| الوصف: | The neutrino minimal standard model ($\nu$MSM) has been tightly constrained in the recent years, either from dark matter (DM) production or from X-ray and small-scale observations. However, current bounds on sterile neutrino DM can be significantly modified when considering a $\nu$MSM extension, in which the DM candidates interact via a massive (axial) vector field. In particular, standard production mechanisms in the early Universe can be affected through the decay of such a massive mediator. We perform an indirect detection analysis to study how the $\nu$MSM parameter-space constraints are affected by said interactions. We compute the X-ray fluxes considering a DM profile that self-consistently accounts for the particle physics model by using an updated version of the Ruffini-Arg\"uelles-Rueda (RAR) fermionic ("ino") model, instead of phenomenological profiles such as the Navarro-Frenk-White (NFW) distribution. We show that the RAR profile accounting for interacting DM, is compatible with measurements of the Galaxy rotation curve and constraints on the DM self-interacting cross section from the Bullet cluster. A new analysis of the X-ray NuSTAR data in the central parsec of the Milky Way, is here performed to derive constraints on the self-interacting sterile neutrino parameter-space. Such constraints are stronger than those obtained with commonly used DM profiles, due to the dense DM core characteristic of the RAR profiles. Comment: 24 pages, 10 figures, 2 tables, published in in Physics of the Dark Universe. arXiv admin note: substantial text overlap with arXiv:1810.05756 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.dark.2020.100699 |
| URL الوصول: | http://arxiv.org/abs/2008.08464 |
| رقم الأكسشن: | edsarx.2008.08464 |
| قاعدة البيانات: | arXiv |
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